Can we override LRECL and RECFM

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Can we override LRECL and RECFM

Postby diptisaini » Wed Sep 29, 2010 11:49 am


I just need to know can we override LRECL and RECFM in DCB statement ?
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Re: Can we override LRECL and RECFM

Postby steve-myers » Wed Sep 29, 2010 5:33 pm

There are four problems here:
  • A DCB=*.SYSUT1 parameter as you use in your SYSUT2 DD statement can only access the DCB attributes actually mentioned in the SYSUT1 DD statement, that is RECFM=VB.
  • The syntax of the SYSUT2 DD statement is incorrect. You cannot do BLKSIZE=*.SYSUT1 and LRECL=*.SYSUT1. You can only do DCB=*.SYSUT1 to reference all of the DCB attributes specified in the SYSUT1 DD statement.
  • You neglected to tell us if these DD statements are in a cataloged procedure.
  • You forgot to tell us if the program is Assembler or a high level language.
If this JCL is not in a cataloged procedure, only an Assembler program can override the DCB attributes specified in the JCL by using what is called a DCB OPEN exit; a stub program called by OPEN about half way through OPEN processing.

If this JCL is in a cataloged procedure, you can override the DCB attributes.
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