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When an access path is created, you can specify Access Path Maintenance
as  *IMMED, *DLY, or *REBLD.  With *DLY, all records that were Added,
Updated, or Deleted have there change merged in to the access path when
it is opened.  With *REBLD, the entire access path is rebuilt at file
open.


Christopher Bipes
Information Services Director
CrossCheck, Inc.

707.586.0551, ext. 1102
707.585.5700 FAX

Chris.Bipes@xxxxxxxxxxxxxxx
www.Cross-Check.com

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-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Haase, Justin C.
Sent: Tuesday, December 06, 2005 12:17 PM
To: Midrange Systems Technical Discussion
Subject: Access path / index rebuilds

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!


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