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IDS Forum

timeout in Informix client (Widows)

Posted By: ROBERT SOSNOWSKI
Date: Sunday, 6 January 2008, at 5:44 a.m.

We've got an issue when trying to upgrade our Informix ODBC from CSDK 2.70 to a newer one. When query (or stored procedure) doesn't return any row within 30 seconds then we are receiving error: (-11094) *Timeout* expired and (-213) Statement interrupted by user.

The only solution is to modify source code. In our case it is not possible. We are getting this error in 2 applications:
1. VB accounting application that makes end of day processing by running configured SPLs. We don't have source code for it and we suspect that modifying it would be costly because application is quite complex.
2. Our ETL is Ab Initio. I don't think Ab Initio will provide us with specially tailored version of Cooperating Systems just because we have issue upgrading Informix driver. Also I haven't found any standard settings in AbInitio to set default timeout for ODBC command.

On the other hand we need newer drivers for our .NET application which will be on the same workstation as our accounting application.
We've already check that when we install both CSDK 2.70 and 3.00 then timeout occurs also for ODBC connections which were earlier on 2.70.

I've googled for "ODBC timeout" not related to Informix. I've found that in all cases a solution (I think that it is quite obvious) is to set ODBC parameter in ODBC manager. It appears that other databases do not support timeout feature or support it together with possibility to set default value for it (MS SQL).

It seems that Informix consciously introduced this timeout feature (In release notes to *ODBC* 3.81 you can see: "Support SQL QUERY TIME OUT") but forgot that it breaks compatibility with older applications.

Does anybody found a workaround for this 30s ODBC command timeout?
The last thing is: is it a bug or feature request? I've found that this issue is quite old one (2002) so probably Informix support rejected it to treat it as a bug.

Robert Sosnowski

Links to similar, earlier cases:
http://groups.google.pl/group/comp.databases.informix/browse_thread/thread/b4423e2fe206ef62/0f5e2d453c17124d?hl=pl&lnk=st&q=odbc+timeout+informix+group%3Acomp.databases.informix#0f5e2d453c17124d
http://groups.google.pl/group/comp.databases.informix/browse_thread/thread/907b7308811b1c46/ad9240c88feb47be?hl=pl&lnk=st&q=timeout++30+group%3Acomp.databases.informix#ad9240c88feb47be
http://groups.google.pl/group/comp.databases.informix/browse_thread/thread/21963187f55bbd3f/753228ee02f0523d?hl=pl&lnk=st&q=timeout++30+group%3Acomp.databases.informix#753228ee02f0523d
http://www.webservertalk.com/archive221-2004-9-402489.html

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