You can dump the address spaces and send it along with the PDA data to
IBM.  They will be able to tell you what activity was taking place.


Terry Traylor 
charlesSCHWAB 
TIS Mainframe Storage Management 
Remedy Queue: tis-hs-mstg
(602) 977-5154

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On
Behalf Of Richbourg, Claude
Sent: Tuesday, April 07, 2009 5:42 AM
To: [email protected]
Subject: Re: DFHSM hang condition on z/OS 1.9.

Thanks for the reply Allan,

At the time(s) it seemed that DFHSM was finishing recycle processing and
would not respond to commands or not come down with a purge command.
There was no CDS backup running at the time(s).

But next time it happens, I'll issue the below commands and look at the
response.

Thanks,
Claude

< snip >

1) Assuming the task is not consuming CPU or IO, is this a problem?
Perhaps HSM has nothing to do.

2) What does F DFHSM,Q ACTIVE show? Likewise, F DFHSM, Q REQ?

3) Check for a CDS Backup running during some other long running (e.g.
recycle) task.
Activities will "stack up" until the CDS backup completes.
Issue d grs,c to confirm, although it should show up on the Q active
command.

<snip>


<snip>
Subject: DFHSM hang condition on z/OS 1.9.

Has anyone noticed an occasional 'hung condition' on DFHSM lately? Where
the task is just stuck and doing nothing?

This has happened about 2-3 times over the past few months and at
different times/conditions.

</snip>

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