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VSAM ESDS File to store large data 4GB


IBM Mainframe Forums -> JCL & VSAM
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anandbtech01

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Joined: 07 Feb 2022
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Location: INDIA

PostPosted: Wed Mar 09, 2022 5:58 pm
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How to create the ESDS file that has maximum capacity of 4GB
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Joerg.Findeisen

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PostPosted: Wed Mar 09, 2022 6:06 pm
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Use a DATACLAS supporting EA. Ask your Storage Team.
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anandbtech01

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PostPosted: Wed Mar 09, 2022 6:59 pm
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I got volume , i am not how to use STORAGE CLASS to refer to that volume. Can any one share sample syntax
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Joerg.Findeisen

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PostPosted: Thu Mar 10, 2022 3:43 am
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Not possible from remote as we don't have the possibility to look at your available Storage Classes and ACS routines. For the use of the STORCLAS parameter, please see JCL reference.
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Pete Wilson

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PostPosted: Fri Mar 11, 2022 3:28 pm
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If you want/have to allocate on a specific volume and the volume and dataset are SMS managed then it needs to be a Guaranteed_Space type STORCLAS, otherwise the volume parameter is ignored and SMS will just allocate the dataset wherever the ACS routines decide.
Whether a STORCLAS is accepted in your JCL or IDCAMS statements depends on how the ACS routines are written in your local site.
You have to code the VOLUMES(volser) parameter in your DEFINE statement, along with a DATACLAS that allows Extended Addressability VSAM, and your STORCLAS.

e.g.
DEFINE CL(NAME(YOUR.ESDS.DATA.SET)
NIXD -
RECORDSIZE(00102 000102) -
SHR(2 3) -
CISZ(18432) -
FSPC(000 000) -
DATACLAS(EXTVSAM) -
STORCLAS(GSPACEVS) -
RECORDS(370000 370000) -
VOLUMES(volume) -
))
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Joerg.Findeisen

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Location: Bamberg, Germany

PostPosted: Fri Mar 11, 2022 7:28 pm
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Pete Wilson wrote:
Whether a STORCLAS is accepted in your JCL or IDCAMS statements depends on how the ACS routines are written in your local site.
STORCLASses can even be RACF protected. So from remote it's hard to give any working advices w/o knowing the environment.
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