Victor Gil wrote:
I was thinking of doing dynalloc in the subtask attached by Open. Why? Any sort of ENQ I should be aware of? I've seen products that parse the SUBSYS dd and perform dynamic allocation.
I haven't tried this on zOS, but in the eighties we investigated making Wylbur compressed data sets transparent to the user, by using SSI routines. I managed to do this for existing data sets by building my own control blocks (DEB, DCB, IOB, and using EXCP), but allocation failed because it could not get an ENQ on SYSZTIOT. Since then IBM has added DSABs and changed the TIOT handling logic, but I'm not hopeful.
Other products may work provided they do their work outside of Open/Close. Gerhard Postpischil Bradford, VT ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
