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IDS Forum

Re: Dirty Read dbschema?

Posted By: ART KAGEL, BLOOMBERG/ 499 PARK
Date: Friday, 28 May 2004, at 1:27 p.m.

In Response To: Dirty Read dbschema? (Schmitz, Rob B [ITS])

Get my dbschema replacement utility, myschema. It is a full replacement for
dbschema with MANY extensions (ex: ability to output dbimport compatible schema
files, ability to output update statistics commands to replicate the current
level of stats, ability to separate CREATE TABLE and CREATE INDEX other DDL into
different files) and bug fixes. Myschema does not use any locks on the
database, tables, or system catalogs. Myschema is included in the package
utils2_ak available for download from the IIUG Software Repository.

Art S. Kagel
----- Original Message -----
From: Ro.... Schmitz <Rob.B.Schmitz@mail.sprint.com>
At: 5/28 13:16

> Hello All,
>
> I have a question regarding dbschema. I have a script that copies data on a
> nightly basis to a reporting database. I wrote the script to capture the
schema
> each night so that any schema changes are automatically incorporated.
> Occasionally, I cannot capture the schema because of locks in the source
> database. For this reason, my script retries 40 times before it gives up and
> pages our primary pager. On rare occasions, even 40 retries is not enough.
>
> Is there any way to have dbschema operate on a dirty read basis? The locks
> preventing dbschema from completing are not due to schema changes but rather
> from normal day end processing.
>
> One other bit of information, this script runs a one box and is capturing
schema
> and copying data from 16 databases in 16 different instances spread across 6
> other boxes.
>
> The users have become more dependent on these reporting databases and they
have
> begun requiring increasingly fresh data; therefore, some time before the end
of
> the year we will be replacing this process with CDR (aka ER). I hope I don't
> have to re-engineer this script or put too much effort into rewriting it as
its
> life span is growing short.
>
> Here is some pertinent background information:
>
> HP-UX 11.00 64-bit
> IDS 9.21.FC4Xq
>
> Thanks
>
> Rob Schmitz
> 913-315-4183
> Rob.B.Schmitz@mail.sprint.com



Messages In This Thread

  • Dirty Read dbschema?
    Schmitz, Rob B [ITS] -- Friday, 28 May 2004, at 12:39 p.m.
    • Re: Dirty Read dbschema?
      ART KAGEL, BLOOMBERG/ 499 PARK -- Friday, 28 May 2004, at 1:27 p.m.

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