I have a JSP application where in one of the Java class I do a query (see code snippet).
But the problem is: depending on the parameter in the PreparedStatement, the query can take various amount of time to execute.
For some parameters, I got timeout exception (see code snippet) that is shown as "Internal Server Error" in the web browser.
I'm wondering why since the same query I can execute in the query browser ok (even though it still takes some time to load).
1. First of all, does anyone what is going on actually :) ? Is it just simply because it's taking too long?
2. What's the best practice to handle this case?
3. Can something be set in the Apache side? (Set longer timeout? How?)
4. Can something be set in the Java code side? What kinds of things need to be done?
Let me know your suggestions how to handle this timeout issue. What I want is a good mechanism so that this can be handle gracefully.
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It looks like a Database connection issue.
Sometimes, simple network or credentials could make the query take too long.
You might want to try creating a stand alone Java Class & run it as a command line application & time it. eg "time java com.yourclassname"
If the problem is because of the Database Load, do consider what Murali said above.
My personal Favorite is using a socket caching machanism, like MemCached
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by: MuraliKanthPosted on 2009-09-03 at 18:49:21ID: 25256415
to increase the time out in Apache look for httpd.conf file and locate
Timeout 300 (or default and change value in seconds.)
Best option to overcome this in java side is to use paging.
Fetch at the most first 500 records and when the user clicks next on the last page fetch the next 500 records that way it would be more interactive to the user rather waiting for a longer time.
-Murali*