JPS6468850A - System crush recovery processing system - Google Patents
System crush recovery processing systemInfo
- Publication number
- JPS6468850A JPS6468850A JP62227105A JP22710587A JPS6468850A JP S6468850 A JPS6468850 A JP S6468850A JP 62227105 A JP62227105 A JP 62227105A JP 22710587 A JP22710587 A JP 22710587A JP S6468850 A JPS6468850 A JP S6468850A
- Authority
- JP
- Japan
- Prior art keywords
- storage device
- data base
- transaction processing
- storage means
- new 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.)
- Pending
Links
Landscapes
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
Abstract
PURPOSE:To speed up recovery, by providing a second non-volatile storage means which has a capacity smaller than that of a first storage means and can be made access at high speed and restoring a set of new data based on log data written in the second storage means at the time of the occurrence of system crush. CONSTITUTION:A second storage device 17 is mainly taken as the object to make access to a data base in the normal transaction processing, and log data 18 is written to update a new data base 19 in case of update. Since the second storage device 17 consists of a medium which can be made access at speed higher than a first storage device 15, the overhead of the transaction processing is reduced. Since the first storage device 15 is reflected on an original data base 16 asynchronously with the transaction processing with respect to plural transactions, I/O overhead to the first storage device 15 is reduced. Meanwhile, a small quantity of log data 18 is read in from the second storage device 17 at high speed to quickly restore the new data base in the recovery processing after system crush.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62227105A JPS6468850A (en) | 1987-09-10 | 1987-09-10 | System crush recovery processing system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62227105A JPS6468850A (en) | 1987-09-10 | 1987-09-10 | System crush recovery processing system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6468850A true JPS6468850A (en) | 1989-03-14 |
Family
ID=16855555
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62227105A Pending JPS6468850A (en) | 1987-09-10 | 1987-09-10 | System crush recovery processing system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6468850A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0443441A (en) * | 1990-06-08 | 1992-02-13 | Fujitsu Ltd | Log control processing system for data base |
WO1993003436A1 (en) * | 1991-08-06 | 1993-02-18 | Fujitsu Limited | Method and apparatus for reducing lock period of shared buffer |
-
1987
- 1987-09-10 JP JP62227105A patent/JPS6468850A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0443441A (en) * | 1990-06-08 | 1992-02-13 | Fujitsu Ltd | Log control processing system for data base |
WO1993003436A1 (en) * | 1991-08-06 | 1993-02-18 | Fujitsu Limited | Method and apparatus for reducing lock period of shared buffer |
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