Service action log

The SAL is a utility that scans the PAL and displays entries that require service representative action. It pulls out the relevant information from those entries and formats it to the display to show service information, such as failing resource names, field replaceable unit (FRU) part numbers, and FRU locations. If FRU part numbers and locations cannot be determined, the SAL display shows symbolic FRU names and isolation procedure names, which then correspond to problem analysis procedures for the service representative. The SAL runs before the operating system is operational.

A shadow log is maintained by Licensed Internal Code on the load source disk. The 128 K-byte shadow log contains a duplicate of the most recent or latest product activity log entries that occurred before IPL began and those entries that were logged since the beginning of IPL. The Product activity log option uses the shadow log when the system is operating in limited paging environment.

If product activity log initialization is not complete, only the shadow log is accessible to this option. Also, the Product activity log menu offers only a few specific product activity log options. The Main menu informs the user that log initialization has not completed, that all product activity log entries are not accessible, and to IPL the operating system to complete initialization. If initialization completes after the Product activity log option has been selected, the option must be selected again to make all product activity log options available for use and to generate reports that show all the log entries.