Issue

When connection validation is active for our Oracle JDBC datasource we see this WARN in the log:

WARN  [org.jboss.resource.adapter.jdbc.vendor.OracleValidConnectionChecker ajp-0.0.0.0-8009-59 org.jboss.resource.adapter.jdbc.vendor.OracleValidConnectionChecker.isValidConnection(OracleValidConnectionChecker.java:79)] Unexpected error in pingDatabase
vertical=32-LP_LRE visitor=1034491666 verticalVisitor=1466931221 trafficQualifier=1 test=25625 presentation=64800 page=LP_LRE_DYNAMICSTATE_PG1 moid= sourceId=thegrinder032620101202 profile=bypassall
java.lang.IllegalArgumentException: java.lang.ClassCastException@1cafc6b
       at sun.reflect.GeneratedMethodAccessor116.invoke(Unknown Source)
       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
       at java.lang.reflect.Method.invoke(Method.java:597)
       at org.jboss.resource.adapter.jdbc.vendor.OracleValidConnectionChecker.isValidConnection(OracleValidConnectionChecker.java:70)
       at org.jboss.resource.adapter.jdbc.BaseWrapperManagedConnectionFactory.isValidConnection(BaseWrapperManagedConnectionFactory.java:458)
       at org.jboss.resource.adapter.jdbc.BaseWrapperManagedConnection.checkValid(BaseWrapperManagedConnection.java:240)
       at org.jboss.resource.adapter.jdbc.local.LocalManagedConnectionFactory.matchManagedConnections(LocalManagedConnectionFactory.java:211)
       at org.jboss.resource.connectionmanager.InternalManagedConnectionPool.getConnection(InternalManagedConnectionPool.java:211)
       at org.jboss.resource.connectionmanager.JBossManagedConnectionPool$BasePool.getConnection(JBossManagedConnectionPool.java:500)
       at org.jboss.resource.connectionmanager.BaseConnectionManager2.getManagedConnection(BaseConnectionManager2.java:348)
       at org.jboss.resource.connectionmanager.TxConnectionManager.getManagedConnection(TxConnectionManager.java:330)
       at org.jboss.resource.connectionmanager.BaseConnectionManager2.allocateConnection(BaseConnectionManager2.java:403)
       at org.jboss.resource.connectionmanager.BaseConnectionManager2$ConnectionManagerProxy.allocateConnection(BaseConnectionManager2.java:850)
       at org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:90)
       at org.springframework.orm.hibernate3.LocalDataSourceConnectionProvider.getConnection(LocalDataSourceConnectionProvider.java:82)
       ...