GB9219688D0 - Improvements in and relating to back-up database systems - Google Patents

Improvements in and relating to back-up database systems

Info

Publication number
GB9219688D0
GB9219688D0 GB929219688A GB9219688A GB9219688D0 GB 9219688 D0 GB9219688 D0 GB 9219688D0 GB 929219688 A GB929219688 A GB 929219688A GB 9219688 A GB9219688 A GB 9219688A GB 9219688 D0 GB9219688 D0 GB 9219688D0
Authority
GB
United Kingdom
Prior art keywords
live
systems
computer database
data
parallel
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
GB929219688A
Other versions
GB2270779B (en
GB2270779A (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.)
FEXCO INITIATIVE Ltd
Original Assignee
FEXCO INITIATIVE 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 FEXCO INITIATIVE Ltd filed Critical FEXCO INITIATIVE Ltd
Priority to GB9219688A priority Critical patent/GB2270779B/en
Priority to BE9200828A priority patent/BE1004541A6/en
Publication of GB9219688D0 publication Critical patent/GB9219688D0/en
Publication of GB2270779A publication Critical patent/GB2270779A/en
Application granted granted Critical
Publication of GB2270779B publication Critical patent/GB2270779B/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
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/2053—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant
    • G06F11/2094—Redundant storage or storage space
    • 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
    • G06F11/1658—Data re-synchronization of a redundant component, or initial sync of replacement, additional or spare unit
    • G06F11/1662—Data re-synchronization of a redundant component, or initial sync of replacement, additional or spare unit the resynchronized component or unit being a persistent storage device

Abstract

A method is described for transfer of data and programs from a live computer database system 1 to a back-up computer database system 2 and for maintenance of the back-up computer database system 2 in which the hardware and operating systems of the two system is different Program lines of each program module are converted into a format compatible with the back-up system and are tested on the back-up system. An incremental file (figure 3, not shown) is created in the live system 1 and this is written to in parallel as data is received in the live system 1. The incremental file is transferred to the back-up system 2 at pre-set intervals and integrity checks are carried out in parallel on the live and back-up systems. At a later stage, efficient balancing tests are carried out on both systems to verify that data stored in both systems is the same. <IMAGE>
GB9219688A 1992-09-17 1992-09-17 Improvements in and relating to back-up database systems Expired - Fee Related GB2270779B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9219688A GB2270779B (en) 1992-09-17 1992-09-17 Improvements in and relating to back-up database systems
BE9200828A BE1004541A6 (en) 1992-09-17 1992-09-23 Improvements in database backup systems and in relation to them.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9219688A GB2270779B (en) 1992-09-17 1992-09-17 Improvements in and relating to back-up database systems
BE9200828A BE1004541A6 (en) 1992-09-17 1992-09-23 Improvements in database backup systems and in relation to them.

Publications (3)

Publication Number Publication Date
GB9219688D0 true GB9219688D0 (en) 1992-10-28
GB2270779A GB2270779A (en) 1994-03-23
GB2270779B GB2270779B (en) 1996-01-10

Family

ID=25662654

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9219688A Expired - Fee Related GB2270779B (en) 1992-09-17 1992-09-17 Improvements in and relating to back-up database systems

Country Status (2)

Country Link
BE (1) BE1004541A6 (en)
GB (1) GB2270779B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE509645C2 (en) * 1996-02-08 1999-02-15 Ericsson Telefon Ab L M A method for simultaneously verifying converted data simultaneously with protocol-based function change in a database
GB2327781A (en) * 1997-07-26 1999-02-03 Ibm Data replication tracking method for a distributed data processing system
GB2328043A (en) * 1997-07-26 1999-02-10 Ibm Managing a distributed data processing system
EP1402367B1 (en) 2001-06-19 2006-06-07 Asensus Copying procedures including verification in data networks
GB2382681A (en) * 2001-11-29 2003-06-04 Inventec Corp Information system
US7277905B2 (en) * 2004-03-31 2007-10-02 Microsoft Corporation System and method for a consistency check of a database backup
CA2555483A1 (en) * 2006-08-04 2008-02-04 Platespin Ltd A method for providing live file transfer between machines

Also Published As

Publication number Publication date
GB2270779B (en) 1996-01-10
GB2270779A (en) 1994-03-23
BE1004541A6 (en) 1992-12-08

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Legal Events

Date Code Title Description
708B Proceeding under section 8(1) patents act 1977
712C Proceeding under section 12(1) patents act 1977
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20100917