[SYS21] LCKW during Pick List Printing

["Brunk, Kevin" <Kevin.Brunk@xxxxxxxxxxxx>]

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We experienced a problem today that I've not encountered before.  A pick list 
print job was running and entered a LCKW state (as shown on WRKACTJOB) and 
stayed in that state for a long time.  So long, in fact, that I ended up ENDJOB 
*IMMED and then eventually needed to use ENDJOBABN.

What confounds me is that I was unable to determine what resource the job was 
waiting on.  When I displayed job record locks, there were none.  I tried using 
the WRKOBJLCK from the job's list of locks and besides being tedious, I was 
still unable to identify a resource for which the job was waiting.  I also used 
WRKACTJOB and scanned the job lists to see if any other jobs were in an unusual 
state that might have been causing the conflict (especially the QDBSRVxx jobs) 
- and found none.  Finally, I used DSPLOG to see if the system was reporting 
any messages like damaged objects or such - again, nothing reported (I also 
checked DSPMSG QSYSOPR).  Interestingly, there were no other user-submitted 
"batch" jobs running at the time - so I couldn't blame it on a query building 
an index!

As soon as the job was ended, other queued jobs which ran the same process 
began running and continued without incident.

Does anyone have an idea of what may have been behind this?  Is there another 
command or way to see what resources a job is waiting for?

==Kevin
TEL: (614) 659-1666
FAX: (614) 659-1667