Investigating console messages and dumps

You can diagnose some problems by investigating MVS™ console messages and dumps. Look for the following clues:

Outstanding WTOR messages
IXGxxx messages
Allocation, catalog, and HSM error messages
I/O errors for log stream data sets or LOGR couple data sets
Log stream data sets that are named IXGLOGR.stream_name.Annnnnnn. The high-level qualifier (IXGLOGR) can be different if the HLQ parameter was specified when the log stream was defined.
IXCxxx messages, which indicate problems with the coupling facility structure or couple data sets.
1C5 abends and other abends from the IXGLOGR address space.