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Copy records with unknown LRECL


IBM Mainframe Forums -> DFSORT/ICETOOL
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oerdgie

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Joined: 22 Nov 2007
Posts: 61
Location: Germany

PostPosted: Tue Jul 24, 2018 7:50 pm
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Hi,

we unload different DB2 tables with DSNTIAUL.
In JCL, the unload files (SYSREC00) have no LRECL in DCB Parameter, because each unload another table causes a different length.

Is it possible to copy (i.e. with DFSORT) each record from an unload file (i.e. from position 3 until end of record) in another file without specified length ?

The RECFM of an unload file is FB.

Thanks for help in advance
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RahulG31

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Joined: 20 Dec 2014
Posts: 446
Location: USA

PostPosted: Tue Jul 24, 2018 8:09 pm
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You can look at LIKE parameter.

https://www.ibm.com/support/knowledgecenter/en/SSLTBW_2.1.0/com.ibm.zos.v2r1.ieab600/xddlike.htm

.
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sergeyken

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Joined: 29 Apr 2008
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PostPosted: Tue Jul 24, 2018 9:19 pm
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If any of SORT output datasets has no DCB attributes defined (either in DD, or in DSCB), then SORT utility assigns DCB parameters based on the first of output record created.
If DCB parameters are already defined, they must match the attributes of the output records.
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oerdgie

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Joined: 22 Nov 2007
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PostPosted: Tue Jul 24, 2018 11:29 pm
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I like to copy the unload file, using SORT, like this :

//SYSIN DD *
OPTION COPY
OUTREC FIELDS=(3,???) <- Length of the record I don't know
/*

The copied records should start in pos. 3.
Is there a trick, to tell SORT : take the rest of the record without specifying the number of Bytes ?
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Arun Raj

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Joined: 17 Oct 2006
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PostPosted: Tue Jul 24, 2018 11:40 pm
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oerdgie,

What is in the first 2 bytes? Is there something that requires it to be removed?

As an alternative, you could also try modifying the SELECT sql to strip off the first 2 bytes while writing into the unload output itself, instead of having to run it through sort again.
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sergeyken

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PostPosted: Wed Jul 25, 2018 12:53 am
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Don’t create unneeded problems by yourself. Use RECFM=VB in all your steps, starting from unloading DB2
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sergeyken

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PostPosted: Wed Jul 25, 2018 5:21 am
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oerdgie wrote:

Is there a trick, to tell SORT : take the rest of the record without specifying the number of Bytes ?

Only with RECFM=VB
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oerdgie

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Joined: 22 Nov 2007
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PostPosted: Wed Jul 25, 2018 2:35 pm
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Thanks for help, problem ist solved !

SORT works when SORTIN has RECFM=VB
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Arun Raj

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PostPosted: Wed Jul 25, 2018 9:00 pm
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oerdgie wrote:
Thanks for help, problem ist solved !

SORT works when SORTIN has RECFM=VB
You could still keep the unload output as a VB data set, but you might not need an additional sort step to remove the first 2 bytes.
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