> Ask IBM to fix DB2 and MQ to use reusable LXs 
> 
> Since DB2 does not use a reuseable LX, it cannot be called from a job 
using a
> reuseable ASID. Most annoying.

  While I agree with the sentiment,  I would like to 
correct the terminology a bit...

  Running out out LXes and running out of ASIDs are 
two separate, mainly unrelated, problems.  z/OS provides
both reusable ASIDs, and Reusable LXes, as separate things,
which happened to be implemented around the same time.
So I would reword your comments to say:

 "Ask IBM to fix DB2 and MQ to use reusable ASIDs."

  I have been told that the DB2 and MQ development view
is that it should not be necessary to frequently recycle 
the DB2 and MQ server address spaces, so this should not be
a large contributor to ASID shortages.
 
 
 "Since DB2 and MQ use the ESAR instruction, they cannot be
called from a job using a reuseable ASID. Most annoying."

  I have been told that their are many instances of ESAR
to the caller's address space throughout the DB2 and MQ
code, so there would be considerable cost to convert all 
of these to ESAIR. 

Jim Mulder   z/OS System Test   IBM Corp.  Poughkeepsie,  NY

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