When a failing system was in a single system sysplex, there are no peer connectors existing to perform recovery for the failing system. In this case, the coupling facility resident log data is recovered when the failed system re-IPLs.

If the log data is still not recovered after IPL, do the following:

1. Delete the log stream from the LOGR data set; system logger will then write all the log stream data to DASD data sets.
2. If you receive a message that indicates that system logger cannot delete the log stream because it is 'in use', write a dummy application to run on another system that will connect to the same log stream or coupling facility structure to which the failed system was connected.

If the coupling facility that the system was connected to also fails, the system will lose its coupling facility resident log data unless staging data sets were in use. If staging data sets exist, system logger uses them to recover log data for the failing system. If there were no staging data sets in use when both the system and the coupling facility fails, any log streams affected are marked as damaged.