[jboss-user] [Datasource Configuration] - How to set up OracleValidConnectionChecker

[Gunnar Bostrom]

Gunnar Bostrom [http://community.jboss.org/people/gunnarbos] created the discussion

"How to set up OracleValidConnectionChecker"

To view the discussion, visit: http://community.jboss.org/message/605809#605809

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Hi,
We use JBoss 5.1.0.GA and java 1.6 and run in to trouble with org.jboss.resource.adapter.jdbc.vendor.OracleValidConnectionChecker.
The oracle-ds.xml contains

<!-- sql to call when connection is created -->
                    <new-connection-sql>select 1 from dual</new-connection-sql>
                    <!-- sql to call on an existing pooled connection when it is obtained from 
                              pool - the OracleValidConnectionChecker is prefered -->
                    <check-valid-connection-sql>select 1 from dual</check-valid-connection-sql>
                    <!--valid-connection-checker-class-name>org.jboss.resource.adapter.jdbc.vendor.OracleValidConnectionChecker
                    </valid-connection-checker-class-name-->

If I remove the comment around OracleValidConnectionChecker I get this warning:

08:23:24,519 WARN  [org.jboss.resource.adapter.jdbc.vendor.OracleValidConnectionChecker] (http-0.0.0.0-8080-1) Unexpected error in pingDatabase
java.lang.IllegalArgumentException: object is not an instance of declaring class

How can I do this correctly? 

The log says warning, but is the check done and a new connection created if the check failed?

Regards
Gunnar
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