Exception : javax.resource.spi.ResourceAdapterInternalException: Unexpected error

[derpoila]

I am working with large scale enterprise application in java with ejb3.I am getting xml content from database with help of below query>SELECT CONTENT FROM TBLMXML .and getting this content with help of below code:\[code\]if(rowSet.getObject("CONTENT") instanceof oracle.sql.OPAQUE){XMLType xmlType = XMLType.createXML(((oracle.sql.OPAQUE) rowSet.getObject("CONTENT"));}\[/code\]But when this query fired i am getting below error: \[code\]14:21:15,698 : [WARN ] : [TxConnectionManager] : Connection error occured: org.jboss.resource.connectionmanager.TxConnectionManager$TxConnectionEventListener@1357dfa[state=NORMAL mc=org.jboss.resource.adapter.jdbc.local.LocalManagedConnection@1897e13 handles=1 lastUse=1336294101874 permit=true trackByTx=true mcp=org.jboss.resource.connectionmanager.JBossManagedConnectionPool$OnePool@9f08ca context=org.jboss.resource.connectionmanager.InternalManagedConnectionPool@fa3d7c xaResource=org.jboss.resource.connectionmanager.TxConnectionManager$LocalXAResource@191a3ed txSync=null]javax.resource.spi.ResourceAdapterInternalException: Unexpected error at org.jboss.resource.adapter.jdbc.BaseWrapperManagedConnection.broadcastConnectionError(BaseWrapperManagedConnection.java:409) at org.jboss.resource.adapter.jdbc.BaseWrapperManagedConnection.connectionError(BaseWrapperManagedConnection.java:385) at org.jboss.resource.adapter.jdbc.WrappedConnection.checkException(WrappedConnection.java:865) at org.jboss.resource.adapter.jdbc.WrappedStatement.checkException(WrappedStatement.java:852) at org.jboss.resource.adapter.jdbc.WrappedResultSet.checkException(WrappedResultSet.java:1947) at org.jboss.resource.adapter.jdbc.WrappedResultSet.getObject(WrappedResultSet.java:768) at oracle.jdbc.rowset.OracleCachedRowSet.populate(OracleCachedRowSet.java:2078) at com.elitecore.billingengine.ejb.base.BillingSearchSessionBase.execute(BillingSearchSessionBase.java:125) at com.elitecore.billingengine.ejb.billcommon.session.CacheDataProviderSessionBean.populateDataMap(CacheDataProviderSessionBean.java:196) at com.elitecore.billingengine.ejb.billcommon.session.CacheDataProviderSessionBean.retrieveDataQuery(CacheDataProviderSessionBean.java:158) at com.elitecore.billingengine.ejb.billcommon.session.CacheDataProviderSessionBean.getMapForCache(CacheDataProviderSessionBean.java:72) at sun.reflect.GeneratedMethodAccessor362.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.jboss.invocation.Invocation.performCall(Invocation.java:386) at org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invoke(StatelessSessionContainer.java:228) at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:156) at org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invoke(StatelessSessionInstanceInterceptor.java:173) at org.jboss.ejb.plugins.CallValidationInterceptor.invoke(CallValidationInterceptor.java:63) at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:121)\[/code\]Please let me know what i am missing. ??M using oracle 10g.Thanks in advanceWater