JPS5583963A - Recovery systen for index sequence compiling file - Google Patents
Recovery systen for index sequence compiling fileInfo
- 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
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.
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)
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 |
-
1978
- 1978-12-20 JP JP15948278A patent/JPS5583963A/en active Granted
Cited By (4)
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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