The data linkage recovery facility is applied in the event of termination of data linkage. It enables you to recover the integrity of data linkage by re-extracting unimported update information that was lost due to the error, recover the extraction information queue file based on the re-extracted information, and then send the data to the target.

The data linkage recovery facility is used to restore conformity of data linkage quickly in a large-sized system where it would normally take HiRDB Dataextractor several days to restore the entire table.

The data linkage recovery facility supports two methods:

• Recovery via the system log file
• Recovery via unload log files

This section explains data linkage recovery via the system log file. For details about data linkage recovery via unload log files, see 9.6 Data linkage recovery via unload log files.

Note

If used for normal operation by mistake, the data linkage recovery facility might result in inconsistent data linkage. Make sure that this facility is used only in the event of a data linkage error.

Organization of this section

9.5.1 Overview of data linkage recovery via the system log file

9.5.2 Prerequisites for data linkage recovery via the system log file

9.5.3 Overview of the recovery procedure using the system log file