On Sun, 11 Aug 2019 at 12:29, Christopher Y. Blaicher <
[email protected]> wrote:

> I have been using dynamic allocation to allocate JES Spool files.  I want
> to use the XTIOT for these files, but have not been successful.  I have
> turned on the S99TIOEX bit, but to no avail. Yes, the program is running
> authorized.
> The manuals say there is a restriction for BDAM, every other access method
> is OK.  The JES manuals list no such restriction.
> The Access is using ACB and RPL specifying VSAM.
> No errors are generated from DYNALLOC or OPEN.
> Anyone have some experience in this area, or thoughts on it?
>

No experience. I do notice that the IEFSSAL mapping  has a flag added in
2009:
SSALXTIO EQU   X'40'              Subsystem supports XTIOT,
*                                 uncaptured UCBs, and DSABs above
*                                 above the line.

This sounds like enabling infrastructure, and that the individual JESs may
or may not support XTIOT.

You don't say how your attempt fails (works, but creates a normal TIOT
entry?). The comment on SSALXTIO says "The flag will be copied to the DSAB
and  used by OPEN to ensure that subsystem DDs using the above functions
are not opened unless they explicitly support
them.", which sounds as though there should be a failure rather than a
fallback if there's no support. But this is all speculation...

Tony H.

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