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Asked: 2026-06-16T03:32:49+00:00

Possible Duplicate: ClassCastException DataSource cannot be cast to javax.sql.ConnectionPoolDataSource How to make tomcat-jdbc.jar work

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Possible Duplicate:
ClassCastException DataSource cannot be cast to javax.sql.ConnectionPoolDataSource

How to make tomcat-jdbc.jar work with Tomcat 6?

We have an application that was designed to be deployed in Tomcat 6 however due to fixes we did, we needed to put JDBC pool codes, that I believe only works with Tomcat 7? Since tomcat 6 is already in our production server, I may need to make JDBC pool work with Tomcat 6?

*I was doing my local development for our application and use Tomcat7 for debugging, that I forgot that we use Tomcat6 in production**

Update:

When I run in tomcat 6 I get this exception:

java.lang.ClassCastException: org.apache.tomcat.jdbc.pool.DataSource cannot be cast to javax.sql.ConnectionPoolDataSource

When it works without problems in Tomcat7…

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1 Answer

  1. Editorial Team

    This is fairly easy, I am running Tomcat JDBC for more than a year now on Tomcat 6. Configure it as you would configure a normal DataSource but put the JAR in Tomcat’s lib dir and add the factory attribute with the value org.apache.tomcat.jdbc.pool.DataSourceFactory to your Resource element.

    Off topic: Just a tip, always use the same Tomcat version for testing as you would use for production.

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