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SQL query exceeds time limit or storate limit DB2.Net Data Provider

Posted on 2009-05-15
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Last Modified: 2013-12-06
I've had an web app running for about a year now.   It's a C#, ASP.Net application that using the DB2 .NET data procvider to iSeries.  

Starting yesterday, the following exception is being thrown:

SQL0666 SQL query exceeds specified time limit or storage limit.

When this statement is ran:
Select MenuAccounting.*, (CashAmount + ChargeAmount) as TotalSales From MenuAccounting Where OrderDate >= '5/15/2009'  and OrderDate <= '5/15/2009'  Order by OrderDate

The statement should only return 1 row of data base.  It is ran over a view that has 220 records in it.  

I can run the statement fine as a script through IBM System navigator.  The system query timelimit is set to *NoMax.  

Doesn't anyone know what the problem could be?
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Question by:weimha
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6 Comments
 
LVL 35

Expert Comment

by:Gary Patterson
ID: 24400052
Setting SYSVAL(QQRYTIMLMT) to *NOMAX may not be enough.  Change the timeout in the DSN (or connection string, or timeout property of the object), too:

http://www.itjungle.com/fhg/fhg071305-story03.html

- Gary Patterson



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LVL 35

Expert Comment

by:Gary Patterson
ID: 24400084
Oh, and as for "why did this happen now".  The best answer I can give you is "Someone probably changed something somewhere."  AS/400 upgrade, PTFs applied, MS automatic update, or the underlying physical file (not the view) may have grown large, and the query engine is generating a bad estimate of runtime.  If extended SQL support is being used, the SQLPKG object on the AS/400 could have possibly been deleted.

The DB2 query optimizer may not choose to look at the view that you specified when it does it's estimates.

- Gary Patterson
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LVL 35

Accepted Solution

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Gary Patterson earned 2000 total points
ID: 24400123
In ADO:

Dim conn As New ADODB.Connection
Dim cmd As New ADODB.Command
Dim rs As ADODB.Recordset

conn.Open "your connection string goes here"
conn.CommandTimeout = 0

Set rs = conn.Execute("your query goes here")

- Gary Patterson
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Author Comment

by:weimha
ID: 24411925
I changed the command timeout to = 0 in the connection string, but I still get the error.
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Author Comment

by:weimha
ID: 24425722
I was using a data adapter and figured out how to set the command timeout on it.  It worked,.  Thanks
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Expert Comment

by:matt2door
ID: 33099567
Weimha - This is an old post, but I am using the data adapter and having the same problem.  Where did you set the command timeout?
Thanks,
Matt
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