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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 37577] New: - I'd like to run init SQL after JDBC Connection creation in Tomcat DBCP
Date Mon, 21 Nov 2005 06:15:45 GMT
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http://issues.apache.org/bugzilla/show_bug.cgi?id=37577

           Summary: I'd like to run init SQL after JDBC Connection creation
                    in Tomcat DBCP
           Product: Commons
           Version: 1.2 Final
          Platform: Other
        OS/Version: other
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: Dbcp
        AssignedTo: commons-dev@jakarta.apache.org
        ReportedBy: jmelichna@gitus.cz


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":

ALTER SESSION SET NLS_SORT = XCZECH

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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