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babuprashad
Warnings : 1
New User
Joined: 09 Aug 2007
Posts: 15
Location: mysore
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Hi,
Every month we would be having a testing requirement that requires us to create about 4000+ ps files. I wanted to automate it using a Rexx code and create the datasets. I have created the below rexx code that creates the datasets. But I am not able to create more than 253 datasets when i submit the rexx code from a jcl.
Do we have a restriction for the number of datasets that can be created from rexx code.
RExx Code :
| Code: |
/* REXX - TO CREATE DATASETS */
DSNAME = 'XXXMF01.TESTFILE.PS'
DO I = 1 TO 4000
DS1 = DSNAME || I
SAY DS1
ADDRESS TSO "ALLOC DA('"DS1"') LIKE('XXXMF01.BABU.PS3')"
END
EXIT |
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expat
Global Moderator
Joined: 14 Mar 2007
Posts: 8797
Location: Welsh Wales
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You need to allocate the dataset with a given DD name, and then after it is created, FREE the DD name.
All within the same loop.
Why do you need to preallocate, why isn't this done within the jobs that run ? |
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babuprashad
Warnings : 1
New User
Joined: 09 Aug 2007
Posts: 15
Location: mysore
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It worked......I am able to create the datasets......actually we were working on a tool that could look for all the JCL datasets and check if it is already present if not present create them.....this part of the tool had an issue while creating more than 4000 ps......now...it is working fine.... I changed it as below :
| Code: |
DO I = 1 TO 600
DS1 = DSNAME || I
SAY DS1
ADDRESS TSO "ALLOC DDNAME(DD1) DA('"DS1"') LIKE('TPGMF01.BABU.PS3')"
"FREE DDNAME(DD1)"
END |
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Akatsukami
Global Moderator
Joined: 03 Oct 2009
Posts: 1788
Location: Bloomington, IL
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| And what is anticipated when the jobs that allocate these data sets with DISP=NEW are run? |
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