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IDS Forum

RE: Please help: problem with index

Posted By:
Date:



ART KAGEL, .... wrote
>
> Here are the steps:
>
> - create a new table with the same structure but no indexes
> or constraints
> - add triggers to the original table to maintain the copy
> up-to-date if needed
> ie INSERT, DELETE, and UPDATE triggers which should use
> stored procedures so
> they can ignore rows that have not yet been copied
> - copy the data from the original table (HP loader or my
> dbcopy utility are
> good tools for copying large quantities of data quickly
> with minimal impact)
> - index the table (if there are unique indexes or unique
> and/or primary key
> constraints start violations on it first and set
> constraints to filtering to
> remove offending rows that would prevent the indexes and
> constraints from
> being created)
> - add back the constraints
> - stop processing for a bit
> - rename the original table to a temp name
> - rename the new table to the original name
> - drop the original table.

I think you should run the command -
update statistics for procedure ;

at this point as procedures seem to use a handle to the old table and are
not by table name

>
> Dbcopy is included in the package utils2_ak available for
> download from the IIUG
> Software Repository.
>
> Art S. Kagel
>
> ----- Original Message -----
> From: Nadezda Bol.... <Nadezda.Boltaca@parex.lv>
> At: 5/ 9 5:15
>
> > Dear Informix Gurus,
> >
> > I have a problem with deleting old data (last 1 day's data from 300
> > stored days)
> > from the most important table of our system.
> > In online.log there are the following messages:
> >
> > 04:00:47 Assert Failed: Fragid 0x500002, Rowid 0x2ba4b002
> not found for
> >
> > delete in partnum 600009
> > 04:00:47 Informix Dynamic Server 2000 Version 9.21.HC4
> > 04:00:47 Who: Session(1042796, cortex@strong, 14976, -1215118544)
> > Thread(1048556, sqlexec, b79140ec, 1)
> > File: exfmsupp.c Line: 853
> > 04:00:47 Results: Delete failed
> > 04:00:47 Action: Run 'oncheck -cI
> cortex:"cortex".tlog#tlog_acbalref'
> > 04:00:47 stack trace for pid 17705 written to
> > /ctxtools/informix/af.3d4da3f
> > 04:00:47 See Also: /ctxtools/informix/af.3d4da3f, shmem.3d4da3f.0
> > 04:01:02 Error writing
> '/ctxtools/informix/shmem.3d4da3f.0' errno = 28
> > 04:01:02 Process exited with return code 127: /bin/sh /bin/sh -c
> > /ctxtools/informix/etc/alarm_prog.sh 4 2 "Index failure:
> > 'cortex:"cortex".tlog#tlog_acbalref'." "Fragi
> >
> > Oncheck did not help:
> >
> > oncheck -cI cortex:tlog#tlog_acbalref
> >
> > Validating index tlog_acbalref for cortex:cortex.tlog...
> > Index tlog_acbalref
> > Index fragment in DBspace tlogidx
> > ERROR:No btree item exists for data row.
> > Fragid 0x500002 Rowid 0x2ba4b001 contains key value:
> > Key: "":" ":37435:
> > Please Drop and ReCreate Index tlog_acbalref for cortex:cortex.tlog.
> >
> > The problem is that this table is very large (about 10
> milions records)
> > -
> > recreating index will take long time and we cannot stop our system
> > for so long time.
> >
> > Could you please advise me what else can I do except
> drop/create index?
> >
>

Colin Bull
c.bull@videonetworks.com

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