In SAS 9.1 you may receive an S0C4 abend if more than one VSAM
file is referenced in the program, even if the same program runs under
version 8.2 of SAS.

Symptoms reported are S0C4 in a module DVV2PPR. Also a CA message is
written to the JOB LOG:
+DVU0004T MYDDNAME   MORE THAN ONE VSAM INTERFACE TABLE IN JOBSTEP


In Datacom Vsam Transparency there is a VIT (vsam interface table) that
each client can modify  for their installation (or have multiple ones).
These VIT's MUST be linked as RE-USABLE and not linked with RENT. This
is documented in the VSAM transparency 2.2 users guide  section 7.1.4

To determine the name of the VIT being used in the abending SAS job
find the DD card with the SUBSYS=(ADRV,'VUTNM=????????') the ???????? is
the name of the VIT being used.

ex.  //MYDDNAME      DD DSN=MYTABLE,DISP=SHR,SUBSYS=(ADRV,'VUTNM=MYVIT')
the VIT being used here is MYVIT

then go find where that module is being called from and determine if it
is re-usable or not.

Command ===>                                          Scroll ===>
CSR
         Name     Prompt        Alias-of    ---- Attributes ----
SSI

_________ MYVIT   *Browsed                            <<==== this one

_________ DIFFVIT                             RU

Notice that it is not marked RU like the one below it.
Have this module relinked as RU and all should be fine.

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