GB9111191D0 - Transaction processing - Google Patents

Transaction processing

Info

Publication number
GB9111191D0
GB9111191D0 GB919111191A GB9111191A GB9111191D0 GB 9111191 D0 GB9111191 D0 GB 9111191D0 GB 919111191 A GB919111191 A GB 919111191A GB 9111191 A GB9111191 A GB 9111191A GB 9111191 D0 GB9111191 D0 GB 9111191D0
Authority
GB
United Kingdom
Prior art keywords
records
recovery
processors
transaction
log records
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB919111191A
Other versions
GB2256069A (en
GB2256069B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Compaq Computer Holding Ltd
Original Assignee
Digital Equipment International Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Digital Equipment International Ltd filed Critical Digital Equipment International Ltd
Priority to GB9111191A priority Critical patent/GB2256069B/en
Publication of GB9111191D0 publication Critical patent/GB9111191D0/en
Publication of GB2256069A publication Critical patent/GB2256069A/en
Application granted granted Critical
Publication of GB2256069B publication Critical patent/GB2256069B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/14—Error detection or correction of the data by redundancy in operation
    • G06F11/1402—Saving, restoring, recovering or retrying
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/18—Error detection or correction of the data by redundancy in hardware using passive fault-masking of the redundant circuits
    • G06F11/183—Error detection or correction of the data by redundancy in hardware using passive fault-masking of the redundant circuits by voting, the voting not being performed by the redundant components
    • G06F11/184—Error detection or correction of the data by redundancy in hardware using passive fault-masking of the redundant circuits by voting, the voting not being performed by the redundant components where the redundant components implement processing functionality
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2201/00—Indexing scheme relating to error detection, to error correction, and to monitoring
    • G06F2201/82—Solving problems relating to consistency

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)

Abstract

A transaction processing system (for processing transactions involving several linked processors) has a master transaction manager (TM) controlling a number of resource managers (RMs) and associated resources, possibly through subordinate TMs. To ensure that consistency is maintained throughout the system, a 2-phase protocol is used, with Prepare and Commit states, so that all resources are updated to reflect the transaction (or the system reverts to its original state). This involves keeping log records at various processors. On a failure such as a processor crash, the failed processor recovers using records obtained from other processors. A TM 13 stores log records received from various subordinate RPs each record including a recovery field REG containing information about the RP organization. For recovery, the RP sends a request for log records and a mask field, and the TM 13 selects those records which match the enabled parts of the REC field. The RP can thus determine, depending on the nature of the failure, what records are required; eg for a particular recovery supervisor or a particular resource. <IMAGE>
GB9111191A 1991-05-23 1991-05-23 Transaction processing Expired - Fee Related GB2256069B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9111191A GB2256069B (en) 1991-05-23 1991-05-23 Transaction processing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9111191A GB2256069B (en) 1991-05-23 1991-05-23 Transaction processing

Publications (3)

Publication Number Publication Date
GB9111191D0 true GB9111191D0 (en) 1991-07-17
GB2256069A GB2256069A (en) 1992-11-25
GB2256069B GB2256069B (en) 1994-09-07

Family

ID=10695505

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9111191A Expired - Fee Related GB2256069B (en) 1991-05-23 1991-05-23 Transaction processing

Country Status (1)

Country Link
GB (1) GB2256069B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10512985A (en) * 1995-01-23 1998-12-08 タンデム コンピューターズ インコーポレイテッド Track transaction state
GB2301686A (en) * 1995-06-03 1996-12-11 Ibm Transaction synchronisation procedure in a routing node
GB2301909A (en) * 1995-06-07 1996-12-18 Ibm Reduction of logging in distributed transaction processing systems
JP3647512B2 (en) * 1995-08-04 2005-05-11 富士通株式会社 Maintenance method for wide area workflow system
US6014669A (en) * 1997-10-01 2000-01-11 Sun Microsystems, Inc. Highly-available distributed cluster configuration database
CN108710557B (en) * 2018-04-20 2021-10-19 烽火通信科技股份有限公司 Method and system for judging data consistency of distributed software program

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4945474A (en) * 1988-04-08 1990-07-31 Internatinal Business Machines Corporation Method for restoring a database after I/O error employing write-ahead logging protocols

Also Published As

Publication number Publication date
GB2256069A (en) 1992-11-25
GB2256069B (en) 1994-09-07

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19990523