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Fin
Beginner
Joined: 19 Jan 2004
Posts: 27
Topics: 8
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 Posted: Wed Dec 01, 2004 10:30 am Post subject: KSDS / ESDS / RRDS |
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Is there any way of telling what VSAM dataset organization type without looking at the JCL that created it? - KSDS/ ESDS etc?
(sorry for asking a basic question, i am trying to get the fundamentals right) |
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Phantom
Data Mgmt Moderator
Joined: 07 Jan 2003
Posts: 1056
Topics: 91
Location: The Blue Planet
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| Posted: Wed Dec 01, 2004 10:32 am Post subject: |
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Fin,
Fileaid can give you this information. Option 3.5 (VSAM). Is this what you are looking at ?
Thanks,
Phantom |
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Fin
Beginner
Joined: 19 Jan 2004
Posts: 27
Topics: 8
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| Posted: Wed Dec 01, 2004 10:36 am Post subject: |
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Thats great info - thanks Phantom!
I am just trying to get myself up to speed with VSAM stuff. |
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kolusu
Site Admin
Joined: 26 Nov 2002
Posts: 12378
Topics: 75
Location: San Jose
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| Posted: Wed Dec 01, 2004 11:23 am Post subject: |
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Fin,
Listcat also gives you the information. I would prefer a listcat command over fileaid because not every shop has fileaid.
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//STEP0100 EXEC PGM=IDCAMS
//SYSPRINT DD SYSOUT=*
//SYSIN DD *
LISTCAT ENT('VSAM CLUSTER') ALL
/*
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Now under the properties you can see indexed, numbered, nonindexed, linear which will be translated as follows.
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INDEXED = KSDS
NUMBERED = RRDS
NONINDEXED = ESDS
LINEAR = LDS
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Listcat can also be run as a TSO command
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TSO LISTCAT ENT('VSAM CLUSTER') ALL
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Hope this helps...
Cheers
kolusu
_________________
Kolusu
www.linkedin.com/in/kolusu |
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Fin
Beginner
Joined: 19 Jan 2004
Posts: 27
Topics: 8
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| Posted: Thu Dec 02, 2004 7:11 am Post subject: |
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Thats very helpful, thank you.
Is LISTCAT exclusively a VSAM tool? Are there any other times when you would use it? |
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Phantom
Data Mgmt Moderator
Joined: 07 Jan 2003
Posts: 1056
Topics: 91
Location: The Blue Planet
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| Posted: Thu Dec 02, 2004 7:35 am Post subject: |
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Fin,
| Code: |
Is LISTCAT exclusively a VSAM tool?
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Not Exclusively though. I works for non-vsam datasets too. But I can say its designed specially for VSAM. For non-vsam datasets it does not give you all the attributes that it would give for a vsam.
for example, LRECL, BLKSIZE.....will not be shown for non-vsam.
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Are there any other times when you would use it?
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I could think of GDGs. It can be used to find the versions of a GDG. For example you need (-n) version of a GDG, it will return u the full version number.
I also is used to find whether a dataset is catalogued or not. Suppose u have a REXX routine dealing with datasets and if u just want to check for the presence of a dataset ppl normally use SYSDSN. But that would recall any migrated datasets & recall all migrated versions if u r trying to look for the existence of a GDG base.
In these case LISTCAT can check the presence of a dataset without recalling them.
Hope this help,
Thanks,
Phantom |
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