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We ran in to the same thing where I work. We were seeing thru Performance
navigator 2 -3 index rebuilds per second. I then ran STRDBMON for several
minutes and ended it. I then queried the file it produced and found that
what was happening it the ODBC queries were building their own indexes and
when done throwing them away. So I worked with one of our programmers and
he created about 50 of the indexes that the ODBC queries were building and
we now build about .8 per second. Our ODBC users are much happier.
John Bresina Jr
Sr Server Engineer - Midrange Team
Allianz Life of North America
5701 Golden Hills Drive
Minneapolis, Mn 55416
763 582 6761
"Haase, Justin
C."
<justin.haase@Kin To
gland.com> "Midrange Systems Technical
Sent by: Discussion"
midrange-l-bounce <midrange-l@xxxxxxxxxxxx>
s@xxxxxxxxxxxx cc
Subject
12/06/2005 02:16 Access path / index rebuilds
PM
Please respond to
Midrange Systems
Technical
Discussion
<midrange-l@midra
nge.com>
Hopefully someone can answer this for me in easy terms.
Why would a system rebuild access paths for files when being used by
many ODBC (QZDASOINIT) jobs? For example, the jobs will sometimes go in
to an IDX-xxxxxxx where xxxxxxx = the name of a file. The online help
shows that the IDX status means it's rebuilding the index (access path)
to whichever file it's listing.
What prompts the rebuild? Is there somewhere we could go look to see
why it's doing that? Additionally, in Performance Navigator there's a
chart for Index Rebuilds/second - the online help for describing why is
pretty vague there also.
Please advise - thanks in advance for your help and for not biting my
head off if this is basic and I just never learned it - hah!
--
Justin C. Haase - iSeries System Engineer
IBM Certified Systems Expert - eServer i5
Kingland Systems Corporation
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