Hi,
We have a production job to COPY/RENAME an extended KSDS and it runs
normally for some days before giving us a RC=8:
DR006I (001)-STEND(01), 2008.028 01:38:23 EXECUTION
BEGINS
ADR411W (001)-DDFLT(02), DATA SET PROD.OLD IN CATALOG CATALOG.UCAT ON VOLUME
BP9E97 WAS NOT SERIALIZED
ON REQUEST
ADR971E (001)-AMOVE(01), LOGICAL COPY FOR CLUSTER PROD.OLD IN IN CATALOG
CATALOG.UCAT FAILED, 4
ADR439E (001)-PREVS(15), A PREALLOCATED DATA SET WITH NEW NAME NEW NAME
PROD.NEW WAS FOUND FOR DATA SET PROD.OLD BUT WAS UNUSABLE, 68
Here are the DSS statements we're using:
COPY DATASET(INCLUDE(PROD.OLD))
-
RENAMEU((PROD.OLD,PROD.NEW))
-
OPTIMIZE(4) TOL(ENQF) STORCLAS(SCCPCRD) REPLACEU
Explanation for ADR971E is: (RC=4)
A logical COPY was requested for an extended format VSAM data set and
DFSMSdss could not enqueue on the data set name. DFSMSdss
requires IDCAMS to copy the data set. A logical COPY using IDCAMS
cannot be performed on an extended format VSAM data set that is open
for update. The TOLERATE keyword is not supported.
However, we don't have other users openning it in I-O mode while doing the
copy/rename.
*More strangely, if we remove the del/define step (we define the target KSDS
before the copy/rename), the job executed successfully, at least for the
past two days!!!*
I have done the various tests and feel a little lost. Actually I was not
able to trigger another ADR971E messages in my tests.
The last information I can supply is about the space allocation. If we
del/define the target KSDS, we can see the messages concerning space
constraint relief:
IGD17287I DATA SET PROD.NEW
COULD NOT BE ALLOCATED NORMALLY,
SPACE CONSTRAINT RELIEF (MULTIPLE VOLUMES) WILL BE ATTEMPTED
IGD17286I SPACE CONSTRAINT RELIEF WAS USED TO ALLOCATE DATA SET
PROD.NEW,
DATA WAS SPREAD OVER MULTIPLE
VOLUMES
IGD17070I DATA SET PROD.NEW
ALLOCATED SUCCESSFULLY WITH 1
STRIPE(S).
IGD17172I DATA SET PROD.NEW
IDCAMS SYSTEM SERVICES
IS ELIGIBLE FOR EXTENDED ADDRESSABILITY
After removing the del/def step, there are no such messages in DSS job log.
It seems that we allocate too much spaces in the DEFINE step and if letting
DSS do it automatically (remove the del/define step) , it's so smart to
calculate the right size to use. But is it relevant?
Having struggled with it for 12 hours, I need some hints from experts here
-_-
Thanks.
Johnny
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