US6738971B2
Expired / Lapsed
US
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Using a resource manager to coordinate the comitting of a distributed transaction
Assignee: Oracle International Corp
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Filing: 1999-03-10
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Granted: 2004-05-18
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Expires: 2019-03-10
Abstract
Abstract A method and apparatus are provided for using a resource manager to coordinate the committing of a distributed transaction. According to the method, a first set of changes is communicated to a first resource manager. In communicating the first set of changes, the changes are directly communicated to the first resource manager without being received at a second resource manager. A second set of changes is communicated to the second resource manager. In communicating the second set of changes, the changes are directly communicated to the second resource manager without being received at the first resource manager. Either the first resource manager or the second resource manager is selected as a committing coordinator. A commit request message is transmitted to the committing coordinator to request that the first set of changes be committed at the first resource manager and that the second set of changes be committed at the second resource manager. In response to receiving the commit request message, the committing coordinator causes, as an atomic unit of work, the first set of changes to be committed at the first resource manager and the second set of changes to be committed at the second resource manager.
Inventors
- 👤 Sashikanth Chandrasekaran
- 👤 Hasan Rizvi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:29
CPC Classifications
G; G06; G06F; G06F9/00; G06F9/06; G06F9/46; G06F9/466
Claims Analysis
Total Claims: 83
Claim 1
Independent Claim
182 words
A method for processing a distributed transaction in a distributed computer system, the method comprising the steps: communicating a first set of changes to a first resource manager, wherein the first set of changes is directly communicated to the first resource manager without being received at a second resource manager; communicating a second set of changes to the second resource manager, wherein the second set of changes is directly communicated to the second resource manager without being received at the first resource manager; selecting either the first resource manager or the second resource manager as a committing coordinator; transmitting a commit request message to the committing coordinator to request that the first set of changes be committed at the first resource manager and that the second set of changes be committed at the second resource manager; and in response to receiving the commit request message, said committing coordinator causing, as an atomic unit of work, the first set of changes to be committed at the first resource manager and the second set of changes to be committed at the second resource manager.
Claim 2
Independent Claim
182 words
A method for processing a distributed transaction in a distributed computer system, the method comprising the steps: communicating a first set of changes to a first resource manager, wherein the first set of changes is directly communicated to the first resource manager without being received at a second resource manager; communicating a second set of changes to the second resource manager, wherein the second set of changes is directly communicated to the second resource manager without being received at the first resource manager; selecting either the first resource manager or the second resource manager as a committing coordinator; transmitting a commit request message to the committing coordinator to request that the first set of changes be committed at the first resource manager and that the second set of changes be committed at the second resource manager; and in response to receiving the commit request message, said committing coordinator causing, as an atomic unit of work, the first set of changes to be committed at the first resource manager and the second set of changes to be committed at the second resource manager.
Claim 3
Dependent Claim
77 words
The method of claim 1 , wherein: the distributed transaction comprises a first child transaction and a second child transaction; the step of communicating the first set of changes to the first resource manager comprises the step of transmitting the first child transaction to the first resource manager; and the step of communicating the second set of changes to the second resource manager comprises the step of transmitting the second child transaction to the second resource manager.
Claim 4
Dependent Claim
20 words
The method of claim 1 , wherein the first resource manager and the second resource manager are homogeneous resource managers.
Claim 5
Dependent Claim
20 words
The method of claim 1 , wherein the first resource manager and the second resource manager are heterogeneous resource managers.
Claim 6
Dependent Claim
52 words
The method of claim 1 , wherein the step of causing the first set of changes and the second set of changes to be committed as an atomic unit of work includes the step of causing a two-phase commit to be performed between the first resource manager and the second resource manager.
Claim 7
Dependent Claim
82 words
The method of claim 1 , wherein: the first resource manager uses a first protocol to communicate with other components; the second resource manager uses a second protocol to communicate with other components; and the step of causing the first set of changes and the second set of changes to be committed as an atomic unit of work includes the step of the first resource manager and the second resource manager communicating with each other through the use of a gateway device.
Claim 8
Dependent Claim
190 words
The method of claim 1 , wherein: the step of communicating the first set of changes includes the step of communicating the first set of changes to a first database system; the step of communicating the second set of changes includes the step of communicating the second set of changes to a second database system; the step of selecting either the first resource manager or the second resource manager as the committing coordinator includes the step of selecting either the first database system or the second database system as the committing coordinator; the step of transmitting the commit request message includes the step of transmitting the commit request message to the committing coordinator to request that the first set of changes be committed at the first database system and that the second set of changes be committed at the second database system; and the step of said committing coordinator includes the step of said committing coordinator causing, as an atomic unit of work, the first set of changes to be committed at the first database system and the second set of changes to be committed at the second database system.
Claim 9
Dependent Claim
112 words
The method of claim 1 , wherein the step of causing the first set of changes and the second set of changes to be committed as an atomic unit of work includes the steps of: storing a first set of log information in nonvolatile memory at the first resource manager, wherein the first set of log information corresponds to the first set of changes written into nonvolatile memory at the first resource manager; and storing a second set of log information in nonvolatile memory at the second resource manager, wherein the second set of log information corresponds to the second set of changes written into nonvolatile memory at the second resource manager.
Claim 10
Dependent Claim
86 words
The method of claim 1 , wherein the step of said committing coordinator causing the first set of changes and the second set of changes to be committed as an atomic unit of work includes the step of storing redo information in nonvolatile memory at the committing coordinator, wherein the redo information guarantees that even if the committing coordinator fails, the first set of changes and the second set of changes will atomically be either committed or rollback by both the first and second resource managers.
Claim 11
Dependent Claim
32 words
The method of claim 1 , wherein the first set of changes and the second set of changes are communicated in parallel respectively to the first resource manager and second resource manager.
Claim 12
Dependent Claim
32 words
The method of claim 1 , wherein the first set of changes and the second set of changes are communicated in series respectively to the first resource manager and second resource manager.
Claim 13
Independent Claim
158 words
A method for processing a distributed transaction in a distributed computer system, the method comprising the steps: identifying a plurality of resource managers at which changes are to be made; communicating to each of the plurality of resource managers a particular group of changes, wherein the particular group of changes are communicated directly to each of the plurality of resource managers without being received at a different resource manager; selecting one of the plurality of resource managers as a committing coordinator; transmitting a commit request message to the selected committing coordinator to request that each group of changes be committed for each of the plurality of resource managers for which the group of changes were communicated; and in response to receiving the commit request message, said committing coordinator causing, as an atomic unit of work, each group of changes to be committed at each of the plurality of resource managers for which the group of changes were communicated.
Claim 14
Independent Claim
158 words
A method for processing a distributed transaction in a distributed computer system, the method comprising the steps: identifying a plurality of resource managers at which changes are to be made; communicating to each of the plurality of resource managers a particular group of changes, wherein the particular group of changes are communicated directly to each of the plurality of resource managers without being received at a different resource manager; selecting one of the plurality of resource managers as a committing coordinator; transmitting a commit request message to the selected committing coordinator to request that each group of changes be committed for each of the plurality of resource managers for which the group of changes were communicated; and in response to receiving the commit request message, said committing coordinator causing, as an atomic unit of work, each group of changes to be committed at each of the plurality of resource managers for which the group of changes were communicated.
Claim 15
Dependent Claim
219 words
A computer-readable medium carrying one or more sequences of one or more instructions for processing a distributed transaction in a distributed computer system, the one or more sequences of one or more instructions including instructions which, when executed by one or more processors, cause the one or more processors to perform the steps of: communicating a first set of changes to a first resource manager, wherein the first set of changes is directly communicated to the first resource manager without being received at a second resource manager; communicating a second set of changes to the second resource manager, wherein the second set of changes is directly communicated to the second resource manager without being received at the first resource manager; selecting either the first resource manager or the second resource manager as a committing coordinator; transmitting a commit request message to the committing coordinator to request that the first set of changes be committed at the first resource manager and that the second set of changes be committed at the second resource manager; and in response to receiving the commit request message, said committing coordinator causing, as an atomic unit of work, the first set of changes to be committed at the first resource manager and the second set of changes to be committed at the second resource manager.
Claim 16
Dependent Claim
219 words
A computer-readable medium carrying one or more sequences of one or more instructions for processing a distributed transaction in a distributed computer system, the one or more sequences of one or more instructions including instructions which, when executed by one or more processors, cause the one or more processors to perform the steps of: communicating a first set of changes to a first resource manager, wherein the first set of changes is directly communicated to the first resource manager without being received at a second resource manager; communicating a second set of changes to the second resource manager, wherein the second set of changes is directly communicated to the second resource manager without being received at the first resource manager; selecting either the first resource manager or the second resource manager as a committing coordinator; transmitting a commit request message to the committing coordinator to request that the first set of changes be committed at the first resource manager and that the second set of changes be committed at the second resource manager; and in response to receiving the commit request message, said committing coordinator causing, as an atomic unit of work, the first set of changes to be committed at the first resource manager and the second set of changes to be committed at the second resource manager.
Claim 17
Dependent Claim
78 words
The computer-readable medium of claim 13 , wherein: the distributed transaction comprises a first child transaction and a second child transaction; the step of communicating the first set of changes to the first resource manager comprises the step of transmitting the first child transaction to the first resource manager; and the step of communicating the second set of changes to the second resource manager comprises the step of transmitting the second child transaction to the second resource manager.
Claim 18
Dependent Claim
21 words
The computer-readable medium of claim 13 , wherein the first resource manager and the second resource manager are homogeneous resource managers.
Claim 19
Dependent Claim
21 words
The computer-readable medium of claim 13 , wherein the first resource manager and the second resource manager are heterogeneous resource managers.
Claim 20
Dependent Claim
53 words
The computer-readable medium of claim 13 , wherein the step of causing the first set of changes and the second set of changes to be committed as an atomic unit of work includes the step of causing a two-phase commit to be performed between the first resource manager and the second resource manager.
Claim 21
Dependent Claim
83 words
The computer-readable medium of claim 13 , wherein: the first resource manager uses a first protocol to communicate with other components; the second resource manager uses a second protocol to communicate with other components; and the step of causing the first set of changes and the second set of changes to be committed as an atomic unit of work includes the step of the first resource manager and the second resource manager communicating with each other through the use of a gateway device.
Claim 22
Dependent Claim
191 words
The computer-readable medium of claim 13 , wherein: the step of communicating the first set of changes includes the step of communicating the first set of changes to a first database system; the step of communicating the second set of changes includes the step of communicating the second set of changes to a second database system; the step of selecting either the first resource manager or the second resource manager as the committing coordinator includes the step of selecting either the first database system or the second database system as the committing coordinator; the step of transmitting the commit request message includes the step of transmitting the commit request message to the committing coordinator to request that the first set of changes be committed at the first database system and that the second set of changes be committed at the second database system; and the step of said committing coordinator includes the step of said committing coordinator causing, as an atomic unit of work, the first set of changes to be committed at the first database system and the second set of changes to be committed at the second database system.
Claim 23
Dependent Claim
113 words
The computer-readable medium of claim 13 , wherein the step of causing the first set of changes and the second set of changes to be committed as an atomic unit of work includes the steps of: storing a first set of log information in nonvolatile memory at the first resource manager, wherein the first set of log information corresponds to the first set of changes written into nonvolatile memory at the first resource manager; and storing a second set of log information in nonvolatile memory at the second resource manager, wherein the second set of log information corresponds to the second set of changes written into nonvolatile memory at the second resource manager.
Claim 24
Dependent Claim
87 words
The computer-readable medium of claim 13 , wherein the step of said committing coordinator causing the first set of changes and the second set of changes to be committed as an atomic unit of work includes the step of storing redo information in nonvolatile memory at the committing coordinator, wherein the redo information guarantees that even if the committing coordinator fails, the first set of changes and the second set of changes will atomically be either committed or rollback by both the first and second resource managers.
Claim 25
Dependent Claim
33 words
The computer-readable medium of claim 13 , wherein the first set of changes and the second set of changes are communicated in parallel respectively to the first resource manager and second resource manager.
Claim 26
Dependent Claim
33 words
The computer-readable medium of claim 13 , wherein the first set of changes and the second set of changes are communicated in series respectively to the first resource manager and second resource manager.
Claim 27
Dependent Claim
221 words
A computer data signal embodied in a carrier wave, the computer data signal carrying one or more sequences of instructions for processing a distributed transaction in a distributed computer system, wherein execution of the one or more sequences of instructions by one or more processors causes the one or more processors to perform the steps of: communicating a first set of changes to a first resource manager, wherein the first set of changes is directly communicated to the first resource manager without being received at a second resource manager; communicating a second set of changes to the second resource manager, wherein the second set of changes is directly communicated to the second resource manager without being received at the first resource manager; selecting either the first resource manager or the second resource manager as a committing coordinator; transmitting a commit request message to the committing coordinator to request that the first set of changes be committed at the first resource manager and that the second set of changes be committed at the second resource manager; and in response to receiving the commit request message, said committing coordinator causing, as an atomic unit of work, the first set of changes to be committed at the first resource manager and the second set of changes to be committed at the second resource manager.
Claim 28
Dependent Claim
221 words
A computer data signal embodied in a carrier wave, the computer data signal carrying one or more sequences of instructions for processing a distributed transaction in a distributed computer system, wherein execution of the one or more sequences of instructions by one or more processors causes the one or more processors to perform the steps of: communicating a first set of changes to a first resource manager, wherein the first set of changes is directly communicated to the first resource manager without being received at a second resource manager; communicating a second set of changes to the second resource manager, wherein the second set of changes is directly communicated to the second resource manager without being received at the first resource manager; selecting either the first resource manager or the second resource manager as a committing coordinator; transmitting a commit request message to the committing coordinator to request that the first set of changes be committed at the first resource manager and that the second set of changes be committed at the second resource manager; and in response to receiving the commit request message, said committing coordinator causing, as an atomic unit of work, the first set of changes to be committed at the first resource manager and the second set of changes to be committed at the second resource manager.
Claim 29
Dependent Claim
198 words
A computer system for processing a distributed transaction in a distributed computer system, the computer system comprising: a first resource manager; a second resource manager; and an application program, wherein the application program, communicates a first set of changes to the first resource manager, wherein the first set of changes is directly communicated to the first resource manager without being received at the second resource manager; communicates a second set of changes to the second resource manager, wherein the second set of changes is directly communicated to the second resource manager without being received at the first resource manager; selects either the first resource manager or the second resource manager as a committing coordinator; transmits a commit request message to the committing coordinator to request that the first set of changes be committed at the first resource manager and that the second set of changes be committed at the second resource manager; and in response to receiving the commit request message, said committing coordinator causing, as an atomic unit of work, the first set of changes to be committed at the first resource manager and the second set of changes to be committed at the second resource manager.
Claim 30
Dependent Claim
198 words
A computer system for processing a distributed transaction in a distributed computer system, the computer system comprising: a first resource manager; a second resource manager; and an application program, wherein the application program, communicates a first set of changes to the first resource manager, wherein the first set of changes is directly communicated to the first resource manager without being received at the second resource manager; communicates a second set of changes to the second resource manager, wherein the second set of changes is directly communicated to the second resource manager without being received at the first resource manager; selects either the first resource manager or the second resource manager as a committing coordinator; transmits a commit request message to the committing coordinator to request that the first set of changes be committed at the first resource manager and that the second set of changes be committed at the second resource manager; and in response to receiving the commit request message, said committing coordinator causing, as an atomic unit of work, the first set of changes to be committed at the first resource manager and the second set of changes to be committed at the second resource manager.
Claim 31
Independent Claim
147 words
A method for processing a distributed transaction in a distributed computer system, the method comprising the steps: communicating a first set of changes to a first resource manager, wherein the first set of changes is directly communicated to the first resource manager without being received at a second resource manager; communicating a second set of changes to the second resource manager, wherein the second set of changes is directly communicated to the second resource manager without being received at the first resource manager; selecting either the first resource manager or the second resource manager as a committing coordinator; transmitting a commit request message to the committing coordinator to cause said committing coordinator to coordinate, as an atomic unit of work, the first set of changes to be committed at the first resource manager and the second set of changes to be committed at the second resource manager.
Claim 32
Independent Claim
147 words
A method for processing a distributed transaction in a distributed computer system, the method comprising the steps: communicating a first set of changes to a first resource manager, wherein the first set of changes is directly communicated to the first resource manager without being received at a second resource manager; communicating a second set of changes to the second resource manager, wherein the second set of changes is directly communicated to the second resource manager without being received at the first resource manager; selecting either the first resource manager or the second resource manager as a committing coordinator; transmitting a commit request message to the committing coordinator to cause said committing coordinator to coordinate, as an atomic unit of work, the first set of changes to be committed at the first resource manager and the second set of changes to be committed at the second resource manager.
Claim 33
Dependent Claim
20 words
The method of claim 26 , wherein the first resource manager and the second resource manager are homogeneous resource managers.
Claim 34
Dependent Claim
20 words
The method of claim 26 , wherein the first resource manager and the second resource manager are heterogeneous resource managers.
Claim 35
Dependent Claim
143 words
The method of claim 26 , wherein: the step of communicating the first set of changes includes the step of communicating the first set of changes to a first database system; the step of communicating the second set of changes includes the step of communicating the second set of changes to a second database system; the step of selecting either the first resource manager or the second resource manager as the committing coordinator includes the step of selecting either the first database system or the second database system as the committing coordinator; and the step of transmitting the commit request message includes the step of transmitting the commit request message to the committing coordinator to request that the first set of changes be committed at the first database system and that the second set of changes be committed at the second database system.
Claim 36
Dependent Claim
32 words
The method of claim 26 , wherein the first set of changes and the second set of changes are communicated in parallel respectively to the first resource manager and second resource manager.
Claim 37
Dependent Claim
32 words
The method of claim 26 , wherein the first set of changes and the second set of changes are communicated in series respectively to the first resource manager and second resource manager.
Claim 38
Independent Claim
185 words
A method for processing a distributed transaction in a distributed computer system, the method comprising the steps: receiving a first set of changes at a first resource manager, wherein the first set of changes is directly received by the first resource manager without being received at a second resource manager; receiving a second set of changes at a second resource manager, wherein the second set of changes is directly received by the second resource manager without being received at the first resource manager; receiving a message that identifies either the first resource manager or the second resource manager as a committing coordinator; receiving a commit request message at the committing coordinator requesting that the first set of changes be committed at the first resource manager and that the second set of changes be committed at the second resource manager; and in response to receiving the commit request message, said committing coordinator causing, as an atomic unit of work, the first set of changes to be committed at the first resource manager and the second set of changes to be committed at the second resource manager.
Claim 39
Independent Claim
185 words
A method for processing a distributed transaction in a distributed computer system, the method comprising the steps: receiving a first set of changes at a first resource manager, wherein the first set of changes is directly received by the first resource manager without being received at a second resource manager; receiving a second set of changes at a second resource manager, wherein the second set of changes is directly received by the second resource manager without being received at the first resource manager; receiving a message that identifies either the first resource manager or the second resource manager as a committing coordinator; receiving a commit request message at the committing coordinator requesting that the first set of changes be committed at the first resource manager and that the second set of changes be committed at the second resource manager; and in response to receiving the commit request message, said committing coordinator causing, as an atomic unit of work, the first set of changes to be committed at the first resource manager and the second set of changes to be committed at the second resource manager.
Claim 40
Dependent Claim
20 words
The method of claim 32 , wherein the first resource manager and the second resource manager are homogeneous resource managers.
Claim 41
Dependent Claim
20 words
The method of claim 32 , wherein the first resource manager and the second resource manager are heterogeneous resource managers.
Claim 42
Dependent Claim
52 words
The method of claim 32 , wherein the step of causing the first set of changes and the second set of changes to be committed as an atomic unit of work includes the step of causing a two-phase commit to be performed between the first resource manager and the second resource manager.
Claim 43
Dependent Claim
82 words
The method of claim 32 , wherein: the first resource manager uses a first protocol to communicate with other components; the second resource manager uses a second protocol to communicate with other components; and the step of causing the first set of changes and the second set of changes to be committed as an atomic unit of work includes the step of the first resource manager and the second resource manager communicating with each other through the use of a gateway device.
Claim 44
Dependent Claim
112 words
The method of claim 32 , wherein the step of causing the first set of changes and the second set of changes to be committed as an atomic unit of work includes the steps of: storing a first set of log information in nonvolatile memory at the first resource manager, wherein the first set of log information corresponds to the first set of changes written into nonvolatile memory at the first resource manager; and storing a second set of log information in nonvolatile memory at the second resource manager, wherein the second set of log information corresponds to the second set of changes written into nonvolatile memory at the second resource manager.
Claim 45
Dependent Claim
86 words
The method of claim 32 , wherein the step of said committing coordinator causing the first set of changes and the second set of changes to be committed as an atomic unit of work includes the step of storing redo information in nonvolatile memory at the committing coordinator, wherein the redo information guarantees that even if the committing coordinator fails, the first set of changes and the second set of changes will atomically be either committed or rollback by both the first and second resource managers.
Claim 46
Dependent Claim
186 words
A computer-readable medium for processing a distributed transaction in a distributed computer system, the computer-readable medium carrying one or more sequences or one or more instructions which, when executed by one or more processors, cause the one or more processors to perform the steps of: identifying a plurality of resource managers at which changes are to be made; communicating to each of the plurality of resource managers a particular group of changes, wherein the particular group of changes are communicated directly to each of the plurality of resource managers without being received at a different resource manager; selecting one of the plurality of resource managers as a committing coordinator; transmitting a commit request message to the selected committing coordinator to request that each group of changes be committed for each of the plurality of resource managers for which the group of changes were communicated; and in response to receiving the commit request message, said committing coordinator causing, as an atomic unit of work, each group of changes to be committed at each of the plurality of resource managers for which the group of changes were communicated.
Claim 47
Dependent Claim
186 words
A computer-readable medium for processing a distributed transaction in a distributed computer system, the computer-readable medium carrying one or more sequences or one or more instructions which, when executed by one or more processors, cause the one or more processors to perform the steps of: identifying a plurality of resource managers at which changes are to be made; communicating to each of the plurality of resource managers a particular group of changes, wherein the particular group of changes are communicated directly to each of the plurality of resource managers without being received at a different resource manager; selecting one of the plurality of resource managers as a committing coordinator; transmitting a commit request message to the selected committing coordinator to request that each group of changes be committed for each of the plurality of resource managers for which the group of changes were communicated; and in response to receiving the commit request message, said committing coordinator causing, as an atomic unit of work, each group of changes to be committed at each of the plurality of resource managers for which the group of changes were communicated.
Claim 48
Dependent Claim
189 words
A computer system for processing a distributed transaction in a distributed computer system, the computer system comprising a memory with one or more sequences or one or more instructions which, when executed by one or more processors, cause the one or more processors to perform the steps of: identifying a plurality of resource managers at which changes are to be made; communicating to each of the plurality of resource managers a particular group of changes, wherein the particular group of changes are communicated directly to each of the plurality of resource managers without being received at a different resource manager; selecting one of the plurality of resource managers as a committing coordinator; transmitting a commit request message to the selected committing coordinator to request that each group of changes be committed for each of the plurality of resource managers for which the group of changes were communicated; and in response to receiving the commit request message, said committing coordinator causing, as an atomic unit of work, each group of changes to be committed at each of the plurality of resource managers for which the group of changes were communicated.
Claim 49
Dependent Claim
189 words
A computer system for processing a distributed transaction in a distributed computer system, the computer system comprising a memory with one or more sequences or one or more instructions which, when executed by one or more processors, cause the one or more processors to perform the steps of: identifying a plurality of resource managers at which changes are to be made; communicating to each of the plurality of resource managers a particular group of changes, wherein the particular group of changes are communicated directly to each of the plurality of resource managers without being received at a different resource manager; selecting one of the plurality of resource managers as a committing coordinator; transmitting a commit request message to the selected committing coordinator to request that each group of changes be committed for each of the plurality of resource managers for which the group of changes were communicated; and in response to receiving the commit request message, said committing coordinator causing, as an atomic unit of work, each group of changes to be committed at each of the plurality of resource managers for which the group of changes were communicated.
Claim 50
Dependent Claim
176 words
A computer-readable medium for processing a distributed transaction in a distributed computer system, the computer-readable medium carrying one or more sequences or one or more instructions which, when executed by one or more processors, cause the one or more processors to perform the steps of: communicating a first set of changes to a first resource manager, wherein the first set of changes is directly communicated to the first resource manager without being received at a second resource manager; communicating a second set of changes to the second resource manager, wherein the second set of changes is directly communicated to the second resource manager without being received at the first resource manager; selecting either the first resource manager or the second resource manager as a committing coordinator; and transmitting a commit request message to the committing coordinator to cause said committing coordinator to coordinate, as an atomic unit of work, the first set of changes to be committed at the first resource manager and the second set of changes to be committed at the second resource manager.
Claim 51
Dependent Claim
176 words
A computer-readable medium for processing a distributed transaction in a distributed computer system, the computer-readable medium carrying one or more sequences or one or more instructions which, when executed by one or more processors, cause the one or more processors to perform the steps of: communicating a first set of changes to a first resource manager, wherein the first set of changes is directly communicated to the first resource manager without being received at a second resource manager; communicating a second set of changes to the second resource manager, wherein the second set of changes is directly communicated to the second resource manager without being received at the first resource manager; selecting either the first resource manager or the second resource manager as a committing coordinator; and transmitting a commit request message to the committing coordinator to cause said committing coordinator to coordinate, as an atomic unit of work, the first set of changes to be committed at the first resource manager and the second set of changes to be committed at the second resource manager.
Claim 52
Dependent Claim
21 words
The computer-readable medium of claim 41 , wherein the first resource manager and the second resource manager are homogeneous resource managers.
Claim 53
Dependent Claim
21 words
The computer-readable medium of claim 41 , wherein the first resource manager and the second resource manager are heterogeneous resource managers.
Claim 54
Dependent Claim
144 words
The computer-readable medium of claim 41 , wherein: the step of communicating the first set of changes includes the step of communicating the first set of changes to a first database system; the step of communicating the second set of changes includes the step of communicating the second set of changes to a second database system; the step of selecting either the first resource manager or the second resource manager as the committing coordinator includes the step of selecting either the first database system or the second database system as the committing coordinator; and the step of transmitting the commit request message includes the step of transmitting the commit request message to the committing coordinator to request that the first set of changes be committed at the first database system and that the second set of changes be committed at the second database system.
Claim 55
Dependent Claim
33 words
The computer-readable medium of claim 41 , wherein the first set of changes and the second set of changes are communicated in parallel respectively to the first resource manager and second resource manager.
Claim 56
Dependent Claim
33 words
The computer-readable medium of claim 41 , wherein the first set of changes and the second set of changes are communicated in series respectively to the first resource manager and second resource manager.
Claim 57
Dependent Claim
179 words
A computer system for processing a distributed transaction in a distributed computer system, the computer system comprising a memory with one or more sequences or one or more instructions which, when executed by one or more processors, cause the one or more processors to perform the steps of: communicating a first set of changes to a first resource manager, wherein the first set of changes is directly communicated to the first resource manager without being received at a second resource manager; communicating a second set of changes to the second resource manager, wherein the second set of changes is directly communicated to the second resource manager without being received at the first resource manager; selecting either the first resource manager or the second resource manager as a committing coordinator; and transmitting a commit request message to the committing coordinator to cause said committing coordinator to coordinate, as an atomic unit of work, the first set of changes to be committed at the first resource manager and the second set of changes to be committed at the second resource manager.
Claim 58
Dependent Claim
179 words
A computer system for processing a distributed transaction in a distributed computer system, the computer system comprising a memory with one or more sequences or one or more instructions which, when executed by one or more processors, cause the one or more processors to perform the steps of: communicating a first set of changes to a first resource manager, wherein the first set of changes is directly communicated to the first resource manager without being received at a second resource manager; communicating a second set of changes to the second resource manager, wherein the second set of changes is directly communicated to the second resource manager without being received at the first resource manager; selecting either the first resource manager or the second resource manager as a committing coordinator; and transmitting a commit request message to the committing coordinator to cause said committing coordinator to coordinate, as an atomic unit of work, the first set of changes to be committed at the first resource manager and the second set of changes to be committed at the second resource manager.
Claim 59
Dependent Claim
21 words
The computer system of claim 47 , wherein the first resource manager and the second resource manager are homogeneous resource managers.
Claim 60
Dependent Claim
20 words
The computer system of claim 47 , wherein the first resource manager and the second resource manager are resource managers.
Claim 61
Dependent Claim
144 words
The computer system of claim 47 , wherein: the step of communicating the first set of changes includes the step of communicating the first set of changes to a first database system; the step of communicating the second set of changes includes the step of communicating the second set of changes to a second database system; the step of selecting either the first resource manager or the second resource manager as the committing coordinator includes the step of selecting either the first database system or the second database system as the committing coordinator; and the step of transmitting the commit request message includes the step of transmitting the commit request message to the committing coordinator to request that the first set of changes be committed at the first database system and that the second set of changes be committed at the second database system.
Claim 62
Dependent Claim
33 words
The computer system of claim 47 , wherein the first set of changes and the second set of changes are communicated in parallel respectively to the first resource manager and second resource manager.
Claim 63
Dependent Claim
33 words
The computer system of claim 47 , wherein the first set of changes and the second set of changes are communicated in series respectively to the first resource manager and second resource manager.
Claim 64
Dependent Claim
213 words
A computer-readable medium for processing a distributed transaction in a distributed computer system, the computer-readable medium carrying one or more sequences or one or more instructions which, when executed by one or more processors, cause the one or more processors to perform the steps of: receiving a first set of changes at a first resource manager, wherein the first set of changes is directly received by the first resource manager without being received at a second resource manager; receiving a second set of changes at a second resource manager, wherein the second set of changes is directly received by the second resource manager without being received at the first resource manager; receiving a message that identifies either the first resource manager or the second resource manager as a committing coordinator; receiving a commit request message at the committing coordinator requesting that the first set of changes be committed at the first resource manager and that the second set of changes be committed at the second resource manager; and in response to receiving the commit request message, said committing coordinator causing, as an atomic unit of work, the first set of changes to be committed at the first resource manager and the second set of changes to be committed at the second resource manager.
Claim 65
Dependent Claim
213 words
A computer-readable medium for processing a distributed transaction in a distributed computer system, the computer-readable medium carrying one or more sequences or one or more instructions which, when executed by one or more processors, cause the one or more processors to perform the steps of: receiving a first set of changes at a first resource manager, wherein the first set of changes is directly received by the first resource manager without being received at a second resource manager; receiving a second set of changes at a second resource manager, wherein the second set of changes is directly received by the second resource manager without being received at the first resource manager; receiving a message that identifies either the first resource manager or the second resource manager as a committing coordinator; receiving a commit request message at the committing coordinator requesting that the first set of changes be committed at the first resource manager and that the second set of changes be committed at the second resource manager; and in response to receiving the commit request message, said committing coordinator causing, as an atomic unit of work, the first set of changes to be committed at the first resource manager and the second set of changes to be committed at the second resource manager.
Claim 66
Dependent Claim
21 words
The computer-readable medium of claim 53 , wherein the first resource manager and the second resource manager are homogeneous resource managers.
Claim 67
Dependent Claim
21 words
The computer-readable medium of claim 53 , wherein the first resource manager and the second resource manager are heterogeneous resource managers.
Claim 68
Dependent Claim
53 words
The computer-readable medium of claim 53 , wherein the step of causing the first set of changes and the second set of changes to be committed as an atomic unit of work includes the step of causing a two-phase commit to be performed between the first resource manager and the second resource manager.
Claim 69
Dependent Claim
83 words
The computer-readable medium of claim 53 , wherein: the first resource manager uses a first protocol to communicate with other components; the second resource manager uses a second protocol to communicate with other components; and the step of causing the first set of changes and the second set of changes to be committed as an atomic unit of work includes the step of the first resource manager and the second resource manager communicating with each other through the use of a gateway device.
Claim 70
Dependent Claim
113 words
The computer-readable medium of claim 53 , wherein the step of causing the first set of changes and the second set of changes to be committed as an atomic unit of work includes the steps of: storing a first set of log information in nonvolatile memory at the first resource manager, wherein the first set of log information corresponds to the first set of changes written into nonvolatile memory at the first resource manager; and storing a second set of log information in nonvolatile memory at the second resource manager, wherein the second set of log information corresponds to the second set of changes written into nonvolatile memory at the second resource manager.
Claim 71
Dependent Claim
87 words
The computer-readable medium of claim 53 , wherein the step of said committing coordinator causing the first set of changes and the second set of changes to be committed as an atomic unit of work includes the step of storing redo information in nonvolatile memory at the committing coordinator, wherein the redo information guarantees that even if the committing coordinator fails, the first set of changes and the second set of changes will atomically be either committed or rollback by both the first and second resource managers.
Claim 72
Dependent Claim
216 words
A computer system for processing a distributed transaction in a distributed computer system, the computer system comprising a memory with one or more sequences or one or more instructions which, when executed by one or more processors, cause the one or more processors to perform the steps of: receiving a first set of changes at a first resource manager, wherein the first set of changes is directly received by the first resource manager without being received at a second resource manager; receiving a second set of changes at a second resource manager, wherein the second set of changes is directly received by the second resource manager without being received at the first resource manager; receiving a message that identifies either the first resource manager or the second resource manager as a committing coordinator; receiving a commit request message at the committing coordinator requesting that the first set of changes be committed at the first resource manager and that the second set of changes be committed at the second resource manager; and in response to receiving the commit request message, said committing coordinator causing, as an atomic unit of work, the first set of changes to be committed at the first resource manager and the second set of changes to be committed at the second resource manager.
Claim 73
Dependent Claim
216 words
A computer system for processing a distributed transaction in a distributed computer system, the computer system comprising a memory with one or more sequences or one or more instructions which, when executed by one or more processors, cause the one or more processors to perform the steps of: receiving a first set of changes at a first resource manager, wherein the first set of changes is directly received by the first resource manager without being received at a second resource manager; receiving a second set of changes at a second resource manager, wherein the second set of changes is directly received by the second resource manager without being received at the first resource manager; receiving a message that identifies either the first resource manager or the second resource manager as a committing coordinator; receiving a commit request message at the committing coordinator requesting that the first set of changes be committed at the first resource manager and that the second set of changes be committed at the second resource manager; and in response to receiving the commit request message, said committing coordinator causing, as an atomic unit of work, the first set of changes to be committed at the first resource manager and the second set of changes to be committed at the second resource manager.
Claim 74
Dependent Claim
21 words
The computer-readable medium of claim 60 , wherein the first resource manager and the second resource manager are homogeneous resource managers.
Claim 75
Dependent Claim
21 words
The computer-readable medium of claim 60 , wherein the first resource manager and the second resource manager are heterogeneous resource managers.
Claim 76
Dependent Claim
53 words
The computer-readable medium of claim 60 , wherein the step of causing the first set of changes and the second set of changes to be committed as an atomic unit of work includes the step of causing a two-phase commit to be performed between the first resource manager and the second resource manager.
Claim 77
Dependent Claim
83 words
The computer-readable medium of claim 60 , wherein: the first resource manager uses a first protocol to communicate with other components; the second resource manager uses a second protocol to communicate with other components; and the step of causing the first set of changes and the second set of changes to be committed as an atomic unit of work includes the step of the first resource manager and the second resource manager communicating with each other through the use of a gateway device.
Claim 78
Dependent Claim
113 words
The computer-readable medium of claim 60 , wherein the step of causing the first set of changes and the second set of changes to be committed as an atomic unit of work includes the steps of: storing a first set of log information in nonvolatile memory at the first resource manager, wherein the first set of log information corresponds to the first set of changes written into nonvolatile memory at the first resource manager; and storing a second set of log information in nonvolatile memory at the second resource manager, wherein the second set of log information corresponds to the second set of changes written into nonvolatile memory at the second resource manager.
Claim 79
Dependent Claim
87 words
The computer-readable medium of claim 60 , wherein the step of said committing coordinator causing the first set of changes and the second set of changes to be committed as an atomic unit of work includes the step of storing redo information in nonvolatile memory at the committing coordinator, wherein the redo information guarantees that even if the committing coordinator fails, the first set of changes and the second set of changes will atomically be either committed or rollback by both the first and second resource managers.
Claim 80
Independent Claim
145 words
An apparatus for processing a distributed transaction in a distributed computer system, the apparatus comprising: means for communicating a first set of changes directly to a first resource management means without the first set of changes being received at a second resource management means; means for communicating a second set of changes directly to the second resource management means without the second set of changes being received at the first resource manager; means for selecting either the first resource management means or the second resource management means as a committing coordinator; and means for transmitting a commit request message to the committing coordinator to cause said committing coordinator to coordinate, as an atomic unit of work, the first set of changes to be committed at the first resource management means and the second set of changes to be committed at the second resource management means.
Claim 81
Independent Claim
145 words
An apparatus for processing a distributed transaction in a distributed computer system, the apparatus comprising: means for communicating a first set of changes directly to a first resource management means without the first set of changes being received at a second resource management means; means for communicating a second set of changes directly to the second resource management means without the second set of changes being received at the first resource manager; means for selecting either the first resource management means or the second resource management means as a committing coordinator; and means for transmitting a commit request message to the committing coordinator to cause said committing coordinator to coordinate, as an atomic unit of work, the first set of changes to be committed at the first resource management means and the second set of changes to be committed at the second resource management means.
Claim 82
Independent Claim
186 words
An apparatus for processing a distributed transaction in a distributed computer system, the method comprising the steps: means for directly receiving a first set of changes at a first resource management means without receiving the first set of changes at a second resource management means; means for directly receiving a second set of changes at the second resource management means without the second set of changes being received at the first resource management means; means for receiving a message that identifies either the first resource management means or the second resource management means as a committing coordinator; means for receiving a commit request message at the committing coordinator requesting that the first set of changes be committed at the first resource management means and that the second set of changes be committed at the second resource management means; and in response to receiving the commit request message, said committing coordinator causing, as an atomic unit of work, the first set of changes to be committed at the first resource management means and the second set of changes to be committed at the second resource management means.
Claim 83
Independent Claim
186 words
An apparatus for processing a distributed transaction in a distributed computer system, the method comprising the steps: means for directly receiving a first set of changes at a first resource management means without receiving the first set of changes at a second resource management means; means for directly receiving a second set of changes at the second resource management means without the second set of changes being received at the first resource management means; means for receiving a message that identifies either the first resource management means or the second resource management means as a committing coordinator; means for receiving a commit request message at the committing coordinator requesting that the first set of changes be committed at the first resource management means and that the second set of changes be committed at the second resource management means; and in response to receiving the commit request message, said committing coordinator causing, as an atomic unit of work, the first set of changes to be committed at the first resource management means and the second set of changes to be committed at the second resource management means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2007-05-18 | 2007-11-17 | 2008-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-05-18 | 2011-11-17 | 2012-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-05-18 | 2015-11-17 | 2016-05-18 | $7700.00 | Window Closed / Lapsed |