Obtaining MVS logger and coupling facility dumps

If you suspect there is a problem within the MVS logger which is not a result of some other resolvable problem, you may need to collect additional diagnostic information. The dumps generated by CICS often don’t contain sufficient information about the MVS logger.

A dump of XCF and MVS logger address spaces from all systems is useful in the diagnosis of such problems. To obtain the dump, issue the following series of MVS commands:

DUMP COMM=(meaningful dump title)
R ww,JOBNAME=(IXGLOGR,XCFAS,cics_jobname),DSPNAME=('IXGLOGR'.*,'XCFAS'.*),CONT
R xx,STRLIST=(STRNAME=structure,(LISTNUM=ALL),ACC=NOLIM),CONT
R yy,REMOTE=(SYSLIST=*('XCFAS','IXGLOGR'),DSPNAME,SDATA),CONT
R zz,SDATA=(COUPLE,ALLNUC,LPA,LSQA,PSA,RGN,SQA,TRT,CSA,GRSQ,XESDATA),END

Use the R xx,STRLIST=(STRNAME=structure,(LISTNUM=ALL),ACC=NOLIM),CONT instruction only where you suspect a problem with the coupling facility structure.

Error records written to the MVS LOGREC data set may also be useful.