JPS5583963A - Recovery systen for index sequence compiling file - Google Patents

Recovery systen for index sequence compiling file

Info

Publication number
JPS5583963A
JPS5583963A JP15948278A JP15948278A JPS5583963A JP S5583963 A JPS5583963 A JP S5583963A JP 15948278 A JP15948278 A JP 15948278A JP 15948278 A JP15948278 A JP 15948278A JP S5583963 A JPS5583963 A JP S5583963A
Authority
JP
Japan
Prior art keywords
recovery
compiling file
index sequence
data
time
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
JP15948278A
Other languages
Japanese (ja)
Other versions
JPS6230460B2 (en
Inventor
Yukio Kageyama
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP15948278A priority Critical patent/JPS5583963A/en
Publication of JPS5583963A publication Critical patent/JPS5583963A/en
Publication of JPS6230460B2 publication Critical patent/JPS6230460B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)

Abstract

PURPOSE:To simplify the recovery operation as well as to reduce the logging data quantity by carrying out the recovery in the after-image/before-image system like in the case of the data base or the direct compiling file. CONSTITUTION:For instance, about the recovery for the index sequence compiling file when the fault occurs in the software, the recovery is carried out via before- image data Bi which is logged. The index sequence compiling file is set to the original state in the following method. For Bi at time t3, data block B1 is added to the index sequence compiling file at time t3. And Bi at time t2 performs the deletion process for data block B8, and Bi at time t1 replaces the data of data block B3 with data D3. In such way, the state of the index sequence compiling file is recovered at time t2, t1 and t0 each.
JP15948278A 1978-12-20 1978-12-20 Recovery systen for index sequence compiling file Granted JPS5583963A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15948278A JPS5583963A (en) 1978-12-20 1978-12-20 Recovery systen for index sequence compiling file

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15948278A JPS5583963A (en) 1978-12-20 1978-12-20 Recovery systen for index sequence compiling file

Publications (2)

Publication Number Publication Date
JPS5583963A true JPS5583963A (en) 1980-06-24
JPS6230460B2 JPS6230460B2 (en) 1987-07-02

Family

ID=15694727

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15948278A Granted JPS5583963A (en) 1978-12-20 1978-12-20 Recovery systen for index sequence compiling file

Country Status (1)

Country Link
JP (1) JPS5583963A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57159356A (en) * 1981-03-27 1982-10-01 Fujitsu Ltd Information acquisition system for check point information for recovery
JPS599764A (en) * 1982-06-30 1984-01-19 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Method of guaranteeing originality in renewing action of several lines
JPS6079443A (en) * 1983-10-07 1985-05-07 Fujitsu Ltd Control system for message security

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57159356A (en) * 1981-03-27 1982-10-01 Fujitsu Ltd Information acquisition system for check point information for recovery
JPS599764A (en) * 1982-06-30 1984-01-19 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Method of guaranteeing originality in renewing action of several lines
JPS6079443A (en) * 1983-10-07 1985-05-07 Fujitsu Ltd Control system for message security
JPH0576062B2 (en) * 1983-10-07 1993-10-21 Fujitsu Ltd

Also Published As

Publication number Publication date
JPS6230460B2 (en) 1987-07-02

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