If an error occurs only in the extraction information queue file for a reason such as a disk failure, the facility for recovering the extraction information queue file re-creates the extraction information queue file based on the information in the extraction server status file.

The facility for recovering the extraction information queue file provides the following benefits:

• There is no need to terminate applications (updating applications) at the source.
• The recovery procedure is simple.

Note that this facility cannot be used if the system log file has been overwritten.

The following figure provides an overview of the facility for recovering the extraction information queue file.

Figure 9-10 Overview of the facility for recovering the extraction information queue file