RE: [cinjug-users] Oracle, Tomcat and Connection Pooling.

["James Carman" <james@xxxxxxxxxxxxxxxxxxxx>]

Probably a classloader issue.  Do you have your driver jar (classes12.jar or zip) in your WEB-INF/lib directory?

 

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From: Brian Engel [mailto:Brian.Engel@xxxxxxxxxxxx]
Sent: Thursday, August 18, 2005 2:20 PM
To: users@xxxxxxxxxx
Subject: [cinjug-users] Oracle, Tomcat and Connection Pooling.

 

 

Wondering if anyone has encountered this problem, it is driving crazy.

 

 

Basically I trying to setup a connection pool with Tomcat (4.1.30) using Oracle's data source factory (et al).

 

The issue is I am getting a ClassCastException when I attempt to cast the object retrieved via the JNDI lookup.

 

i.e.

 

   InitialContext context = new InitialContext();
   OracleDataSource ds = (OracleDataSource) context.lookup(JDBCContext);      //blows up here...
   conn=ds.getConnection();

 

If I look at the class name for the object returned by the look up it is oracle.jdbc.pool.OracleDataSource. i.e. System.out.println(context.lookup(JDBCContext).getClass()) shows : class oracle.jdbc.pool.OracleDataSource

 

 

So seemingly the object returned by the lookup is of type oracle.jdbc.pool.OracleDataSource.

 

My relevant tomcat config looks like this....  Any suggestions? 

 

<Resource name="MyConnPool" scope="Shareable" type="oracle.jdbc.pool.OracleDataSource"/>

<ResourceParams name="MyConnPool">

<parameter>

<name>factory</name>

<value>oracle.jdbc.pool.OracleDataSourceFactory</value>

</parameter>

<parameter>

<name>driverClassName</name>

<value>oracle.jdbc.driver.OracleDriver</value>

</parameter>

<parameter>

<name>url</name>

<value>jdbc:oracle:thin:@mydb.com:1521:theSID</value>

</parameter>

<parameter>

<name>user</name>

<value>user1</value>

</parameter>

<parameter>

<name>password</name>

<value>blahblah</value>

</parameter>

<parameter>

<name>maxIdle</name>

<value>20</value>

</parameter>

<parameter>

<name>maxActive</name>

<value>50</value>

</parameter>

<parameter>

<name>maxWait</name>

<value>5000</value>

</parameter>

</ResourceParams>

 

 

 

Thanks!