RE: V5R3M0 Performance Issues

["Jon Allen" <jallen@xxxxxxxxx>]

Thanks, our problem seems to be more of a PASE issue, our native apps
are running ok.  This is very strange to us.

-----Original Message-----
From: Elvis Budimlic [mailto:ebudimlic@xxxxxxxxxxxxxxxxxxxxxxxxx] 
Sent: Friday, April 07, 2006 12:17 PM
To: 'Midrange Systems Technical Discussion'
Subject: RE: V5R3M0 Performance Issues

Small correction, old query engine is CQE (Classic Query Engine).  New
query
engine is SQE (SQL Query Engine).
I don't see how access path can be considered old.  Did you perhaps
encounter an issue with access path size (*MAX4GB vs *MAX1TB)?  Or in
CQE
engine you were encountering query optimizer time-out due to large
number of
indexes over the files?

Elvis B.

-----Original Message-----
Subject: Re: V5R3M0 Performance Issues

I know from upgrading to 5.3 that we did run into alot of issues with
the
change to cqe engine for the queries (sql). I'm not sure how your app is
running but we did find that with the change to cqe if you are running
sql
statements over logicals with include or omits in it, the queries will
tank
unless you tell the optomizer to use the old query engine (sqe). The
other
issue that we hit it large files with access paths that were "old", you
cant
telll that they are but if you do a chglf and just take the option to
force
the access path rebuild that helped alot. 
 
Not sure if it helps you, but thought I'd mention it 





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