SYS1.LOGREC information on z/OS

Use this topic to understand how the z/OS SYS1.LOGREC information can assist with problem determination.

IBM MQ for z/OS and SYS1.LOGREC

The SYS1.LOGREC data set records various errors that different components of the operating system encounter. For more information about using SYS1.LOGREC records, see the MVS Diagnosis: Tools and Service Aids manual.

IBM MQ for z/OS recovery routines write information in the system diagnostic work area (SDWA) to the SYS1.LOGREC data set when retry is attempted, or when percolation to the next recovery routine occurs. Multiple SYS1.LOGREC entries can be recorded, because two or more retries or percolations might occur for a single error.

The SYS1.LOGREC entries recorded near the time of abend might provide valuable historical information about the events leading up to the abend.

Finding the applicable SYS1.LOGREC information

To obtain a SYS1.LOGREC listing, either:

Use the EREP service aid, described in the MVS Diagnosis: Tools and Service Aids manual to format records in the SYS1.LOGREC data set.
Specify the VERBEXIT LOGDATA keyword in IPCS.
Use option 7 on the DUMP ANALYSIS MENU (refer to Processing a dump using the IBM MQ for z/OS dump display panels ).

Only records available in storage when the dump was requested are included. Each formatted record follows the heading *****LOGDATA*****. Parent topic: IBM MQ for z/OS dumps