I always assumed that SPZAP did RDJFCB, and when it noticed that you
specified "FORMAT4.DSCB" it did an OPENJ for X'040404...' (which is hard
to specify in JCL).
absolutely correct. X'0404....' is the dataset name of the VTOC, so
opening that sets the DEB extents to the extents of the VTOC. An
authorized program can change the DEB extents to access other tracks on
the volume, but AMASPZAP does not so so.
--
Bruce A. Black
Senior Software Developer for FDR
Innovation Data Processing 973-890-7300
personal: [EMAIL PROTECTED]
sales info: [EMAIL PROTECTED]
tech support: [EMAIL PROTECTED]
web: www.innovationdp.fdr.com
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