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subhi_dhanbad Beginner
Joined: 30 Sep 2005 Posts: 3 Topics: 2
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Posted: Sat Nov 04, 2006 5:55 am Post subject: vsam tuning |
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Hi ,
I have a huge VSAM file in production.The data and the index is stored in multiple volumes. It is defined as below:-
DATA -
(NAME(V2.BBB.RRR.PYTFIL.DATA) -
RECORDSIZE(923 923) -
FREESPACE(25 25) -
CISZ(8192) -
KEYS(39 3) -
TRK(1000 1000) ) -
INDEX -
(NAME(V2.BBB.RRR.PYTFIL.INDEX) -
CISZ(1024) -
TRK(1 1) )
The index is spread into 183 extents. I need to compress it.
I have created a test jcl to define a test vsam as --
INDEX(NAME(W2.BBB.RRRSK.PYTFIL.INDEX) -
CYLINDERS(12 1) -
CONTROLINTERVALSIZE(1024))
Then I am copying the production data into test file.
But it is not able to copy the whole data.It abends with Vsam return code 28.
If I give the TRK(1 1) and CISZ(1024) it copies the whole production data into the test file.
Can anyone suggest me the reason and solution ?
Thanks,
Subhi. _________________ Regards,
Subhi B. |
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kolusu Site Admin
Joined: 26 Nov 2002 Posts: 12359 Topics: 75 Location: San Jose
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