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From "Phil Steitz (JIRA)" <>
Subject [jira] Closed: (DBCP-175) [dbcp] I'd like to run init SQL after JDBC Connection creation in Tomcat DBCP
Date Mon, 15 Feb 2010 04:13:28 GMT


Phil Steitz closed DBCP-175.

> [dbcp] I'd like to run init SQL after JDBC Connection creation in Tomcat DBCP
> -----------------------------------------------------------------------------
>                 Key: DBCP-175
>                 URL:
>             Project: Commons Dbcp
>          Issue Type: Improvement
>    Affects Versions: 1.2
>         Environment: Operating System: other
> Platform: Other
>            Reporter: Jiri Melichna
>            Assignee: Phil Steitz
>            Priority: Minor
>             Fix For: 1.3
>         Attachments: DBCP-175-1.txt, DBCP-175-2.txt, DBCP-175-2.txt,
> Hi!
> I'm porting some j2ee web based applications from BEA Web Logic to Tomcat 5.5. 
> In BEA Web Lobic connection pool it is possible to specify init SQL qurery 
> that server runs after connection is created (before first use). It's very 
> good for example of national settings in Oracle. For correct czech sorting i 
> have to run "setting query":
> First time i tryed to write interceptor into my application. This interceptor 
> runs ALTER SESSION SET NLS_SORT = XCZECH before evey sorted query (SELECT ... 
> ORDER BY...), but i had some performance problems. So i starded to work with 
> DBCP. I was very wandered about DBCP packages in Tomcat 5.5 and i did not find 
> sources of naming-factory-dbcp.jar. So i refactored, enhanced and compiled 
> full DBCP (with pool and collections). Now i'm a little afraid of some library 
> conflicts (full DBCP, full Pool and full Collections refactored into tomcat 
> packages), but performance is OK and basic tests of my application seems good.
> I added property connectionInitSql for int SQL into BasicDataSource. I had to 
> mofify BasicDataSourceFactory for correct setting of this property. Property 
> is used in method createConnection() of DriverConnectionFactory to init 
> Connection. 
> It would be very nice if you will add this init feature into Tomcat DBCP.
> Best regards
> Jiri Melichna

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