Nonstop Database, HiRDB Version 9 System Operation Guide
The following table shows the actions to be taken in the event of an error in the current file during HiRDB operation.
Table 20-12 Actions to be taken in the event of an error in the current file during HiRDB operation
Condition at the time of an error | HiRDB processing | HiRDB administrator's action | |
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Write operation | There are files in swappable target status. | Swaps the system log files. Places the erroneous system log file in reserved status, and places in current status one of the files in swappable target status, then resumes processing. |
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There are no files in swappable target status. | Terminates abnormally the unit containing the erroneous system log file. | See 20.17 When a HiRDB (unit) terminates abnormally due to a system log file shortage.
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Read operation | Dual system log files are used. | Switches to the normal file version and resumes processing. | Place the erroneous file in swappable target status with the method shown in (3). |
Dual system log files are not used. | Places the erroneous system log file in reserved status and cancels processing. |
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#: When checking of the unload operation has been released (pd_log_unload_check=N is specified), this action is not required.
The following table shows the actions to be taken in the event of an error in the current file during HiRDB restart processing.
Table 20-13 Actions to be taken in the event of an error in the current file during HiRDB restart processing
Condition at the time of an error | HiRDB processing | HiRDB administrator's action |
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Dual system log files are used | Switches to the normal file version and resumes processing. | After restarting HiRDB, place the erroneous file in swappable target status with the method shown in (3). |
Dual system log files are not used | Places the erroneous system log file in reserved status and terminates restart processing of the unit containing the erroneous system log file. |
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The actions to be taken in the event of a disk error are explained below by way of an example.
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