CA2060886A1 - Recoverability in mass storage data base systems - Google Patents

Recoverability in mass storage data base systems

Info

Publication number
CA2060886A1
CA2060886A1 CA002060886A CA2060886A CA2060886A1 CA 2060886 A1 CA2060886 A1 CA 2060886A1 CA 002060886 A CA002060886 A CA 002060886A CA 2060886 A CA2060886 A CA 2060886A CA 2060886 A1 CA2060886 A1 CA 2060886A1
Authority
CA
Canada
Prior art keywords
data base
flat file
message
recovery information
data
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
CA002060886A
Other languages
French (fr)
Other versions
CA2060886C (en
Inventor
Frederick C. Kruesi
David W. Heileman, Jr.
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.)
Unisys Corp
Original Assignee
Frederick C. Kruesi
David W. Heileman, Jr.
Unisys Corporation
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 Frederick C. Kruesi, David W. Heileman, Jr., Unisys Corporation filed Critical Frederick C. Kruesi
Publication of CA2060886A1 publication Critical patent/CA2060886A1/en
Application granted granted Critical
Publication of CA2060886C publication Critical patent/CA2060886C/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
    • G06F11/1446—Point-in-time backing up or restoration of persistent data
    • 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
    • G06F11/1446—Point-in-time backing up or restoration of persistent data
    • G06F11/1458—Management of the backup or restore process
    • G06F11/1469—Backup restoration techniques
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/50—Centralised arrangements for answering calls; Centralised arrangements for recording messages for absent or busy subscribers ; Centralised arrangements for recording messages
    • H04M3/53—Centralised arrangements for recording incoming messages, i.e. mailbox systems
    • H04M3/533—Voice mail systems
    • 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
    • G06F2201/80—Database-specific techniques

Abstract

The message management system utilizes a flat file (20) on mirrored disk for storing fixed-length Message Segments (MS) of variable-length Messages to be managed by the system. Inconsistencies between mirrored copies of data are tolerated and cor-rected. Message Management includes Storing, Retrieving and Deleting Messages in response to commands from clients. Each Message Segment in the flat file is stored in a record containing the Message Segment data and Recovery Information (RI). A
data base (21) for accessing the Message Segments in the flat file is maintained on system disk. The Recovery Information is such as to permit recovery of the data base from the Recovery Information in the flat file if the data base is obsolete, lost or corrupted.
TNAUDIT file is utilized to determine that the data base is synchronized with the flat file. If data base inconsistency is detected, the data base is rebuilt from the Recovery Information.
CA002060886A 1990-04-25 1991-04-24 Recoverability in mass storage data base systems Expired - Fee Related CA2060886C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US07/514,783 1990-04-25
US07/514,783 US5138710A (en) 1990-04-25 1990-04-25 Apparatus and method for providing recoverability in mass storage data base systems without audit trail mechanisms
PCT/US1991/002845 WO1991016677A1 (en) 1990-04-25 1991-04-24 Recoverability in mass storage data base systems

Publications (2)

Publication Number Publication Date
CA2060886A1 true CA2060886A1 (en) 1991-10-26
CA2060886C CA2060886C (en) 2004-03-23

Family

ID=24048674

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002060886A Expired - Fee Related CA2060886C (en) 1990-04-25 1991-04-24 Recoverability in mass storage data base systems

Country Status (6)

Country Link
US (1) US5138710A (en)
EP (1) EP0480009B1 (en)
JP (1) JPH05502747A (en)
CA (1) CA2060886C (en)
DE (1) DE69116065T2 (en)
WO (1) WO1991016677A1 (en)

Families Citing this family (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5065311A (en) * 1987-04-20 1991-11-12 Hitachi, Ltd. Distributed data base system of composite subsystem type, and method fault recovery for the system
US5325519A (en) * 1991-10-18 1994-06-28 Texas Microsystems, Inc. Fault tolerant computer with archival rollback capabilities
EP0551009B1 (en) * 1992-01-08 2001-06-13 Emc Corporation Method for synchronizing reserved areas in a redundant storage array
JP3213766B2 (en) * 1992-03-16 2001-10-02 株式会社日立製作所 Replicate file update system
EP0593062A3 (en) * 1992-10-16 1995-08-30 Siemens Ind Automation Inc Redundant networked database system
US5404508A (en) * 1992-12-03 1995-04-04 Unisys Corporation Data base backup and recovery system and method
US5504883A (en) * 1993-02-01 1996-04-02 Lsc, Inc. Method and apparatus for insuring recovery of file control information for secondary storage systems
US5515502A (en) * 1993-09-30 1996-05-07 Sybase, Inc. Data backup system with methods for stripe affinity backup to multiple archive devices
CA2137167C (en) * 1993-12-22 1999-09-21 Tony J. Brice Data management method and architecture
US5778167A (en) * 1994-06-14 1998-07-07 Emc Corporation System and method for reassigning a storage location for reconstructed data on a persistent medium storage system
US5592618A (en) * 1994-10-03 1997-01-07 International Business Machines Corporation Remote copy secondary data copy validation-audit function
US5734817A (en) * 1995-03-01 1998-03-31 Unisys Corporation Method for making a data base available to a user program during data base recovery
US5644696A (en) * 1995-06-06 1997-07-01 International Business Machines Corporation Recovering multi-volume data sets during volume recovery
US5771276A (en) * 1995-10-10 1998-06-23 Ast Research, Inc. Voice templates for interactive voice mail and voice response system
US6453345B2 (en) 1996-11-06 2002-09-17 Datadirect Networks, Inc. Network security and surveillance system
US5953352A (en) 1997-06-23 1999-09-14 Micron Electronics, Inc. Method of checking data integrity for a raid 1 system
US6061822A (en) * 1997-06-23 2000-05-09 Micron Electronics, Inc. System and method for providing a fast and efficient comparison of cyclic redundancy check (CRC/checks sum) values of two mirrored disks
US6058166A (en) * 1997-10-06 2000-05-02 Unisys Corporation Enhanced multi-lingual prompt management in a voice messaging system with support for speech recognition
US6317485B1 (en) * 1998-06-09 2001-11-13 Unisys Corporation System and method for integrating notification functions of two messaging systems in a universal messaging system
US6430177B1 (en) 1998-06-09 2002-08-06 Unisys Corporation Universal messaging system providing integrated voice, data and fax messaging services to pc/web-based clients, including a content manager for receiving information from content providers and formatting the same into multimedia containers for distribution to web-based clients
US6148329A (en) * 1998-07-20 2000-11-14 Unisys Corporation Method and system for maintaining the format of messages in a messaging system database
US6504915B1 (en) * 1998-09-25 2003-01-07 Unisys Corporation Multiple node messaging system wherein nodes have shared access to message stores of other nodes
US6408310B1 (en) * 1999-10-08 2002-06-18 Unisys Corporation System and method for expediting transfer of sectioned audit files from a primary host to a secondary host
US7116764B1 (en) 2000-08-11 2006-10-03 Unisys Corporation Network interface unit having an embedded services processor
US7095828B1 (en) 2000-08-11 2006-08-22 Unisys Corporation Distributed network applications platform architecture
US7327832B1 (en) 2000-08-11 2008-02-05 Unisys Corporation Adjunct processing of multi-media functions in a messaging system
US6977927B1 (en) 2000-09-18 2005-12-20 Hewlett-Packard Development Company, L.P. Method and system of allocating storage resources in a storage area network
US6804819B1 (en) 2000-09-18 2004-10-12 Hewlett-Packard Development Company, L.P. Method, system, and computer program product for a data propagation platform and applications of same
US7386610B1 (en) 2000-09-18 2008-06-10 Hewlett-Packard Development Company, L.P. Internet protocol data mirroring
JP2002189607A (en) * 2000-12-22 2002-07-05 Nec Corp Memory managing method and information processor
US6606690B2 (en) 2001-02-20 2003-08-12 Hewlett-Packard Development Company, L.P. System and method for accessing a storage area network as network attached storage
US6629108B2 (en) * 2001-03-09 2003-09-30 Hewlett-Packard Development Company, Lp. Method for insuring data integrity for mirrored independently accessible memory devices
US20030154271A1 (en) * 2001-10-05 2003-08-14 Baldwin Duane Mark Storage area network methods and apparatus with centralized management
US7028156B1 (en) 2003-07-01 2006-04-11 Veritas Operating Corporation Use of read data tracking and caching to recover from data corruption
US7028139B1 (en) 2003-07-03 2006-04-11 Veritas Operating Corporation Application-assisted recovery from data corruption in parity RAID storage using successive re-reads
US7472129B2 (en) * 2004-06-29 2008-12-30 Microsoft Corporation Lossless recovery for computer systems with map assisted state transfer
US7360111B2 (en) * 2004-06-29 2008-04-15 Microsoft Corporation Lossless recovery for computer systems with remotely dependent data recovery
GB2529403A (en) 2014-08-18 2016-02-24 Ibm A Method of operating a shared nothing cluster system
CN107864135A (en) * 2017-11-07 2018-03-30 山东网智物联网科技有限公司 The realization device of Internet of Things communication means, device and Internet of Things Network Communication
CN112052120B (en) * 2020-08-27 2022-08-05 厦门市美亚柏科信息股份有限公司 Database deleted data recovery method and device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1510481A (en) * 1966-02-21 1968-01-19 Western Electric Co Information transfer arrangement
US3840862A (en) * 1973-09-27 1974-10-08 Honeywell Inf Systems Status indicator apparatus for tag directory in associative stores
US4148098A (en) * 1976-10-18 1979-04-03 Xerox Corporation Data transfer system with disk command verification apparatus
US4419725A (en) * 1980-11-14 1983-12-06 Sperry Corporation Cache/disk subsystem with tagalong copy
US4637024A (en) * 1984-11-02 1987-01-13 International Business Machines Corporation Redundant page identification for a catalogued memory
US4785473A (en) * 1984-11-27 1988-11-15 Genesis Electronics Corporation Interactive audio telecommunications message storage, forwarding and retrieval system
JPH01261745A (en) * 1988-04-08 1989-10-18 Internatl Business Mach Corp <Ibm> Recovery of transaction of data base record
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
US5138710A (en) 1992-08-11
EP0480009A1 (en) 1992-04-15
WO1991016677A1 (en) 1991-10-31
EP0480009B1 (en) 1996-01-03
JPH05502747A (en) 1993-05-13
CA2060886C (en) 2004-03-23
DE69116065T2 (en) 1996-06-13
DE69116065D1 (en) 1996-02-15

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