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It's possible SQL is busy rebuilding MTI's. After I re-IPL, there's a
significant performance hit for the first few transactions of a
database-intensive app, and then performance gets back to normal. Check
your Index Advisor to see what's being built, watch the Index Advisor for
the next few days, and make permanent indexes based on SYSIXADV.

On Wed, Sep 20, 2023 at 8:58 AM Greg Wilburn <
gwilburn@xxxxxxxxxxxxxxxxxxxxxxx> wrote:

We are experiencing significant performance issues after our upgrade from
7.3 to 7.5 of OS/400. We have the latest cume installed.
The performance issues seem to be directly related to database access -
both SQL and legacy applications.

I just ran a simple query from Run SQL scripts directly selecting 5 rows
from a large file, using the same keys as an existing logical file.
It took almost 2 minutes to return the data.

There are dozens of examples I've seen over the previous weeks since the
upgrade.

I'm not asking for possible solutions without providing more info... Just
asking if anyone else has experience this? Are there known issues with
database response times?
(i.e. qsys2.user_info_basic)

TIA,
Greg
[Logo]<https://www.totalbizfulfillment.com/> Greg Wilburn
Director of IT
301.895.3792 ext. 1231
301.895.3895 direct
gwilburn@xxxxxxxxxxxxxxxxxxxxxxx<mailto:gwilburn@xxxxxxxxxxxxxxxxxxxxxxx>
1 Corporate Dr
Grantsville, MD 21536
www.totalbizfulfillment.com<http://www.totalbizfulfillment.com>
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