The following conditions must be satisfied:

• The source database is HiRDB.
• No error has occurred in any of the following files and these files have not been initialized:
  
  • Extraction master status file
  • Extraction server status file
  • Data linkage file
• HiRDB's system log file has not been overwritten.
• The extraction information queue file is not full.
• The hdeprep command was not executed during the extraction processing performed before the error occurred.
• HiRDB's pdrplstop command was not executed during operations prior to recovery.
• The syncterm operand value in the extraction system definition is not true.

If you have upgraded the source Datareplicator from a version earlier than 08-01 to 08-01 or later, perform an initial start on the source Datareplicator.^#

An extraction information queue file whose version is earlier than 08-01 cannot be recovered by the facility for recovering the extraction information queue file (instead, use the data linkage recovery facility). If there is an extraction information queue file whose version is earlier than 08-01, the KFRB05037-W message will be output when the source Datareplicator starts.

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If your system does not use the facility for recovering the extraction information queue file, there is no need to perform an initial start.

If the extraction information queue file is stored in a Datareplicator file system area and the extraction information queue file is initialized, other files stored together with the extraction information queue file (extraction server status file or data linkage file) will also be initialized. If an error occurs while the facility for recovering the extraction information queue file is running, it is only necessary to restore the extraction server status file from its backup.

For this reason, it is advisable to store the extraction information queue file, the extraction server status file, and the data linkage file in separate Datareplicator file system areas.

For a HiRDB/Parallel Server, store the extraction information queue file for each of multiple back-end servers in a separate Datareplicator file system area.

If an error occurs in the extraction information queue file while the data linkage recovery facility is running, the facility for recovering the extraction information queue file cannot be used. In such a case, use the data linkage recovery facility to recover the error.