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October 29th, 2009 08:00

CSL 9.0.0 and BCSCHECK

Greetings.

I've made a DASD-initializationprocedure that, a.o., tries to get rid of all the VVDS-catalogentries for all the volumes I've just hit with a DFDSS INIT. As their old volser doesn't exist anymore, we do not want any old VVDS-entries floating around. Wherever they might be.

I do this by generating a:

BCSCHECK ACTION=FAST-DELETE,
GDVO,
INCLUDEVVDS,
INCCAT=**,
INCDSN=SYS1.VVDS.Vxxxxxx,
INCDSN=SYS1.VVDS.Vyyyyyy

This cleanup runs to completion without a hitch. That is, almost always. It does happen, however, that this operation suddenly "hangs" no IO, no CPU, nothing. It seems to be waiting for something, but what? We then cancel the job and everything seems to be OK: no garbled catalogs or anythng like that.

Anybody seen anything like this?

Willem Vermeer
ING, the Netherlands

5 Practitioner

 • 

274.2K Posts

November 3rd, 2009 07:00

Hi, Willem. Given what you found in GRS, this problem may be caused by missing maintenance on your operating system. IBM has numerous APARs documenting recent CAS-related issues of one kind or another. At least two of these may be relevant here although they do not appear to be exact matches: OA28245 (fixing PTFs on RSU0907) and OA28362 (fixing PTFs on RSU0909). I would recommend that you consult your systems programming staff to determine your current z/OS maintenance level and apply any CAS-related PTFs that are not already on the system encountering the failure. If that does not resolve it, then please obtain a dump for us and we'll try to find out exactly what's wrong and where. Thanks!


Jon Scheffter
Technical Support Engineer 4
GTS Solutions -- PREM Symm Mainframe Software

Message was edited by:
OldCSLguy

154 Posts

October 29th, 2009 08:00

Greetings & welcome Willem,

Have you noticed a resource contention while this is going on such as in GRS, or MIM ? Also, what kind of time frame; does it normally run for 2 minutes, 10?

What about collateral activity also? Is there any system wide maintenance going on while this happens?

Dave Yates
EMC TSE3
Benevolten Host S/W & Mainframe Forum Moderator
"Il Moderatore Benevolo"

5 Practitioner

 • 

274.2K Posts

October 29th, 2009 09:00

Hi, Willem. This is not a known problem with the BCSCHECK command. If it happens again, I'd like you to cancel the hanging job with a dump (i. e, issue a C jobname,DUMP command from the operator console) and save the resulting output. Please be sure your dump parameters are set to capture user subpool storage and system storage; also, please suppress any dump handling products that may be present such as CA/AbendAid or Dumpmaster. When you have the above output available, please contact the EMC Customer Support Center serving your area and open a Service Request for this issue. Then, upload the output and attach it to the Service Request. We'll take a look at it and see if we can figure out where things are going wrong. Thanks!

Jon Scheffter
Technical Support Engineer 4
GTS Solutions -- PREM Symm Mainframe Software

Message was edited by:
OldCSLguy

18 Posts

November 3rd, 2009 06:00

Dave,

No concurrent system wide maintenance going on.

I did a D GRS,CONTENTION,ENQ and there does seem to be contention going on between my job and the CATALOG addressspace. At first I thought that my job had found those particular entries in this catalog and was trying to delete them and that that was the reason for the ENQ-conflict.

However, when I look at the CSL-output, CSL already seems to have finished processing this catalog (not having found any of the entries). So, why is it waiting for CATALOG to release the usercat? Why is it going for a repeat-performance? Also, why does CATALOG have an Exclusive on this usercat anyway and not on any of the others? CSL didn't have any problems processing any of the others.

By the way, after I cancelled the job I SCANned the usercat for those entries and didn't find any of them. And, as I said, CSL BCSCHECK didn't find anything either.

I guess I'll be going for a systemdump after I manage to ged rid of Dumpmaster.
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