Here's a USERMOD to set the block size to 0 for z/OS 2.5. I have a USERMOD for each release going back to 1.11.
++USERMOD(XTEMXMI)
/*
Transmit OUTDA() forces the BLKSIZE of the output data set
to 3120 (X'0C30').
This USERMOD sets it to 0 (system determined block size).
FMID(HTE77D0) TSO/E 2.5
*/ .
++VER(Z038) FMID(HTE77D0).
++ZAP (INMXM).
NAME INMXM
VER 1A7C 0000,0C30
REP 1A7C 0000,0000
Al Loeffler
----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to [email protected] with the message: INFO IBM-MAIN
