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IDS Forum

RE: RE: One temp space fills and 4gl fails

Posted By: George Palmer
Date: Wednesday, 6 February 2008, at 12:59 p.m.

In Response To: RE: RE: One temp space fills and 4gl fails (Everett Mills)

Brian,

Informix does not create fragmented temp tables unless directed to do so
(explicit table create statement for temp tables). Temporary tables are
create in a single DBSpace (This has been true from version 7 through
version 10, I am uncertain about version 11 I have not attempted any
temp table operation in version 11 as yet).

When the manual speaks about creating temp tables in round robin fashion
it is refers to the fact that the first temp table goes into the first
dbspace then next goes in the next dbspace...

It is working the way I would expect it to work. Depending on how you
created the temp table, you could fragment the table via the SQL used to
create it. If you are not using the power of parallelization in your
application (setting PDQ, having fragmented tables ...) then having
multiple tempDBS may not be beneficial to you.

George

-----Original Message-----
From: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] On Behalf Of
Everett Mills
Sent: Wednesday, February 06, 2008 10:32 AM
To: ids@iiug.org
Subject: RE: RE: One temp space fills and 4gl fails [11207]

Brian-

Your temp spaces are all marked for unlogged temp data. They
should fill by round robin unless something is preventing that. As Kern
said, look for down spaces (I don't see any here) or the DBSPACETEMP
environment variable overriding the default behavior.

--EEM

> -----Original Message-----
> From: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] On Behalf Of
> BRIAN MINNICK
> Sent: Wednesday, February 06, 2008 11:22 AM
> To: ids@iiug.org
> Subject: Re: RE: One temp space fills and 4gl fails [11205]
>
> IBM Informix Dynamic Server Version 10.00.FC3R1 -- On-Line (Prim) --
Up 3
> days
> 10:40:10 -- 1403348 Kbytes
>
> Dbspaces
> address number flags fchunk nchunks pgsize flags owner name
> c00000003b2bee88 1 0x1 1 1 2048 N informix rootdbs
> c00000003c934848 2 0x1 2 1 2048 N informix phylog
> c00000003c9349e0 3 0x1 3 1 2048 N informix logfiles
> c00000003c934b78 4 0x1001 4 5 2048 N informix db0
> c00000003c934d10 5 0x2001 5 1 2048 N T informix tempdb1
> c00000003c937028 6 0x2001 6 1 2048 N T informix tempdb2
> c00000003c9371c0 7 0x2001 7 1 2048 N T informix tempdb3
> c00000003c937358 8 0x1 12 2 2048 N informix dw0
> 8 active, 2047 maximum
>
> Chunks
> address chunk/dbs offset size free bpages flags pathname
> c00000003b2bf028 1 1 4 64000 46215 PO-- /exe_prd/dblinks/ROOTDBS_PRD
> c00000003c9333d0 2 2 3 49149 10096 PO-- /exe_prd/dblinks/PHYLOG_PRD
> c00000003c933570 3 3 3 1048571 48518 PO--
/exe_prd/dblinks/LOGFILES_PRD
> c00000003c933710 4 4 3 1032189 64 PO-- /exe_prd/dblinks/DB0_PRD
> c00000003c9338b0 5 5 3 114685 114536 PO-- /exe_prd/dblinks/TEMPDB1_PRD

> c00000003c933a50 6 6 3 114685 113039 PO-- /exe_prd/dblinks/TEMPDB2_PRD

> c00000003c933bf0 7 7 3 114685 114536 PO-- /exe_prd/dblinks/TEMPDB3_PRD

> c00000003c933d90 8 4 3 1032189 29 PO-- /exe_prd/dblinks/DB0_PRD_CH2
> c00000003c934028 9 4 3 1032189 12 PO-- /exe_prd/dblinks/DB0_PRD_CH3
> c00000003c9341c8 10 4 3 1032189 992 PO-- /exe_prd/dblinks/DB0_PRD_CH4
> c00000003c934368 11 4 3 1032189 374031 PO--
/exe_prd/dblinks/DB0_PRD_CH5
> c00000003c934508 12 8 3 1000000 127645 PO-- /exe_prd/dblinks/DW0_PRD
> c00000003c9346a8 13 8 3 900000 899997 PO--
/exe_prd/dblinks/DW0_PRD_CH2
> 13 active, 2047 maximum
>
> NOTE: The values in the "size" and "free" columns for DBspace chunks
are
>
> displayed in terms of "pgsize" of the DBspace to which they belong.
>
> Expanded chunk capacity mode: disabled
>
>
>
************************************************************************

**
> *****
> Forum Note: Use "Reply" to post a response in the discussion forum.
>
> See you at the IIUG Informix 2008 Conference
> The Power Conference for Informix Professionals
> April 27 - 30, 2008 Marriott Overland Park (Kansas City), Kansas
> http://www.iiug.org/conf
> Registration Now Open!!

************************************************************************
*******
Forum Note: Use "Reply" to post a response in the discussion forum.

See you at the IIUG Informix 2008 Conference
The Power Conference for Informix Professionals
April 27 - 30, 2008 Marriott Overland Park (Kansas City), Kansas
http://www.iiug.org/conf
Registration Now Open!!

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