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Phantom

I need to create a PDS which will have the same statistics (LRECL, BLOCK SIZE, ........) as an Existing PDS. I want to do this in REXX.

One way I know is to get the Information about the existing PDS using the "LISTDSI" command and use these information in the Alloc command to create the new PDS.

But I would like to know, whether is there any better way to do this operation.

Pls give me your suggestions.

Thanks,
Phantom,

Premkumar · Posted: Tue Feb 11, 2003 5:09 am Post subject:

"ALLOC DS('new.pds') LIKE('old.pds') MAXVOL(1)"

Phantom · Posted: Tue Feb 11, 2003 8:08 am Post subject:

Premkumar,

I had few problems executing the command that you suggested.

1. The new PDS is created in SCRATCH. When I tried to specify the STORCLAS & MGMTCLAS parameters it gave an error saying that the new PDS is not cataloged. (IKJ56893I)

2. The new PDS has a different BLOCKSIZE. The original PDS has a block size of 8000 (LRECL = 80, RECFM = FB). But the new PDS has a block size of 27920.

Please help me solving these two problems.

Thanks for your suggesstion.

Regards,
Phantom,

blowbeat · Beginner Joined: 07 Feb 2003 Posts: 6 Topics: 0

Hi,

You can specify BLKSIZE(8000) but SMS may even override that I believe. Unless it is absolutely neccesary to have 8000, I'd leave the block size as SMS set it.

For the other issue, you'd need to post the messages following IKJ56893I too.

Cheers, Jan

Phantom · Posted: Wed Feb 12, 2003 4:17 am Post subject:

Blowbeat,

Here is the message that I received when I tried to specify the Dataclas & Storclas commands in the Alloc command

Premkumar · Posted: Thu Feb 13, 2003 5:12 am Post subject:

Phantom,

Why don't you try with MAXVOL(1) as I suggested earlier?

Phantom · Posted: Thu Feb 13, 2003 6:31 am Post subject:

Premkumar,

I specified MAXVOL(1) also, But there is no difference. It creates a PDS with a block size of 27920 instead of 8000. and I got the same error messages when I specified the STORCLAS & DATACLAS options.

blowbeat · Beginner Joined: 07 Feb 2003 Posts: 6 Topics: 0

If the SMS parameters specified are to avoid the new PDS to be ' allocated in SCRATCH' try to find out who's responsible for data management and ask them the correct values to specify.
And, again, the blocksize may be deliberatly set to 27920 for performance purposes and normally your application should not be bothered with block sizes.