Weird error !!

I have created a datasource in my server WASCE and I am accessing it EJB. The IDE I use is RAD 7.
The error I get from server log is

javax.ejb.EJBException: Container has suffered a SystemException;
 nested exception is: javax.transaction.SystemException at 
org.apache.openejb.core.ivm.BaseEjbProxyHandler.convertException(BaseEjbProxyHandler.java:366) at 
org.apache.openejb.core.ivm.BaseEjbProxyHandler.invoke(BaseEjbProxyHandler.java:251) at 
org.apache.openejb.util.proxy.Jdk13InvocationHandler.invoke(Jdk13InvocationHandler.java:49) at 
$Proxy26.add2db(Unknown Source) at clientPack.ClientServlet.operation(ClientServlet.java:52) at 
clientPack.ClientServlet.doPost(ClientServlet.java:45) at 
javax.servlet.http.HttpServlet.service(HttpServlet.java:713) at 
javax.servlet.http.HttpServlet.service(HttpServlet.java:806) at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at
 org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at 
org.apache.geronimo.tomcat.valve.DefaultSubjectValve.invoke(DefaultSubjectValve.java:56) at 
org.apache.geronimo.tomcat.GeronimoStandardContext$SystemMethodValve.invoke(GeronimoStandardContext.java:406) at 
org.apache.geronimo.tomcat.valve.GeronimoBeforeAfterValve.invoke(GeronimoBeforeAfterValve.java:47) at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at 
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:568) at 
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) at 
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845) at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at
 org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at 
java.lang.Thread.run(Thread.java:619) Caused by: javax.transaction.SystemException at
org.apache.geronimo.transaction.manager.TransactionImpl.rollbackResources(TransactionImpl.java:605) at
 org.apache.geronimo.transaction.manager.TransactionImpl.rollback(TransactionImpl.java:483) at 
org.apache.geronimo.transaction.manager.TransactionManagerImpl.rollback(TransactionManagerImpl.java:263) at
org.apache.openejb.core.transaction.TransactionPolicy.rollbackTransaction(TransactionPolicy.java:183) at 
org.apache.openejb.core.transaction.TxRequired.afterInvoke(TxRequired.java:78) at
 org.apache.openejb.core.stateless.StatelessContainer._invoke(StatelessContainer.java:233) at 
org.apache.openejb.core.stateless.StatelessContainer._invoke(StatelessContainer.java:188) at 
org.apache.openejb.core.stateless.StatelessContainer.invoke(StatelessContainer.java:165) at
 org.apache.openejb.core.ivm.EjbObjectProxyHandler.businessMethod(EjbObjectProxyHandler.java:217) at
 org.apache.openejb.core.ivm.EjbObjectProxyHandler._invoke(EjbObjectProxyHandler.java:77) at
 org.apache.openejb.core.ivm.BaseEjbProxyHandler.invoke(BaseEjbProxyHandler.java:245) ... 22 more

The error I get on IDE console is

2009-11-10 11:05:09,468 WARN  [GeronimoConnectionEventListener] connectionErrorOccurred called with null
java.sql.SQLException: ORA-00955: name is already used by an existing object

at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:125)
	at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:305)
	at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:272)
	at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:623)
	at oracle.jdbc.driver.T4CStatement.doOall8(T4CStatement.java:112)
	at oracle.jdbc.driver.T4CStatement.execute_for_rows(T4CStatement.java:474)
	at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1028)
	at oracle.jdbc.driver.OracleStatement.executeUpdate(OracleStatement.java:1451)
	at org.tranql.connector.jdbc.StatementHandle.executeUpdate(StatementHandle.java:166)
	at org.apache.openjpa.lib.jdbc.DelegatingStatement.executeUpdate(DelegatingStatement.java:114)
	at org.apache.openjpa.lib.jdbc.LoggingConnectionDecorator$LoggingConnection$LoggingStatement.executeUpdate(LoggingConnectionDecorator.java:760)
	at org.apache.openjpa.jdbc.schema.SchemaTool.executeSQL(SchemaTool.java:1191)
	at org.apache.openjpa.jdbc.schema.SchemaTool.createTable(SchemaTool.java:949)
	at org.apache.openjpa.jdbc.schema.SchemaTool.add(SchemaTool.java:526)
	at org.apache.openjpa.jdbc.schema.SchemaTool.add(SchemaTool.java:344)
	at org.apache.openjpa.jdbc.schema.SchemaTool.run(SchemaTool.java:321)
	at org.apache.openjpa.jdbc.meta.MappingTool.record(MappingTool.java:501)
	at org.apache.openjpa.jdbc.meta.MappingTool.record(MappingTool.java:453)
	at org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory.synchronizeMappings(JDBCBrokerFactory.java:159)
	at org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory.newBrokerImpl(JDBCBrokerFactory.java:119)
	at org.apache.openjpa.kernel.AbstractBrokerFactory.newBroker(AbstractBrokerFactory.java:189)
	at org.apache.openjpa.kernel.DelegatingBrokerFactory.newBroker(DelegatingBrokerFactory.java:142)
	at org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:192)
	at org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:56)
	at org.apache.geronimo.persistence.CMPEntityManagerTxScoped.createEntityManager(CMPEntityManagerTxScoped.java:74)
	at org.apache.geronimo.persistence.CMPEntityManagerTxScoped.getEntityManager(CMPEntityManagerTxScoped.java:55)
	at org.apache.geronimo.persistence.CMPEntityManagerTxScoped.persist(CMPEntityManagerTxScoped.java:81)
	at EJBPack.EJBPOJO.add2db(EJBPOJO.java:14)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.apache.openejb.core.interceptor.ReflectionInvocationContext$Invocation.invoke(ReflectionInvocationContext.java:158)
	at org.apache.openejb.core.interceptor.ReflectionInvocationContext.proceed(ReflectionInvocationContext.java:141)
	at org.apache.openejb.core.interceptor.InterceptorStack.invoke(InterceptorStack.java:67)
	at org.apache.openejb.core.stateless.StatelessContainer._invoke(StatelessContainer.java:210)
	at org.apache.openejb.core.stateless.StatelessContainer._invoke(StatelessContainer.java:188)
	at org.apache.openejb.core.stateless.StatelessContainer.invoke(StatelessContainer.java:165)
	at org.apache.openejb.core.ivm.EjbObjectProxyHandler.businessMethod(EjbObjectProxyHandler.java:217)
	at org.apache.openejb.core.ivm.EjbObjectProxyHandler._invoke(EjbObjectProxyHandler.java:77)
	at org.apache.openejb.core.ivm.BaseEjbProxyHandler.invoke(BaseEjbProxyHandler.java:245)
	at org.apache.openejb.util.proxy.Jdk13InvocationHandler.invoke(Jdk13InvocationHandler.java:49)
	at $Proxy26.add2db(Unknown Source)
	at clientPack.ClientServlet.operation(ClientServlet.java:52)
	at clientPack.ClientServlet.doPost(ClientServlet.java:45)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:713)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at org.apache.geronimo.tomcat.valve.DefaultSubjectValve.invoke(DefaultSubjectValve.java:56)
	at org.apache.geronimo.tomcat.GeronimoStandardContext$SystemMethodValve.invoke(GeronimoStandardContext.java:406)
	at org.apache.geronimo.tomcat.valve.GeronimoBeforeAfterValve.invoke(GeronimoBeforeAfterValve.java:47)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:568)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
	at java.lang.Thread.run(Thread.java:619)
2009-11-10 11:05:09,484 ERROR [Transaction] Unexpected exception rolling back org.apache.geronimo.connector.outbound.LocalXAResource@e91a77; 
continuing with rollback
javax.transaction.xa.XAException
	at org.apache.geronimo.connector.outbound.LocalXAResource.rollback(LocalXAResource.java:88)
	at org.apache.geronimo.transaction.manager.TransactionImpl.rollbackResources(TransactionImpl.java:590)
	at org.apache.geronimo.transaction.manager.TransactionImpl.rollback(TransactionImpl.java:483)
	at org.apache.geronimo.transaction.manager.TransactionManagerImpl.rollback(TransactionManagerImpl.java:263)
	at org.apache.openejb.core.transaction.TransactionPolicy.rollbackTransaction(TransactionPolicy.java:183)
	at org.apache.openejb.core.transaction.TxRequired.afterInvoke(TxRequired.java:78)
	at org.apache.openejb.core.stateless.StatelessContainer._invoke(StatelessContainer.java:233)
	at org.apache.openejb.core.stateless.StatelessContainer._invoke(StatelessContainer.java:188)
	at org.apache.openejb.core.stateless.StatelessContainer.invoke(StatelessContainer.java:165)
	at org.apache.openejb.core.ivm.EjbObjectProxyHandler.businessMethod(EjbObjectProxyHandler.java:217)
	at org.apache.openejb.core.ivm.EjbObjectProxyHandler._invoke(EjbObjectProxyHandler.java:77)
	at org.apache.openejb.core.ivm.BaseEjbProxyHandler.invoke(BaseEjbProxyHandler.java:245)
	at org.apache.openejb.util.proxy.Jdk13InvocationHandler.invoke(Jdk13InvocationHandler.java:49)
	at $Proxy26.add2db(Unknown Source)
	at clientPack.ClientServlet.operation(ClientServlet.java:52)
	at clientPack.ClientServlet.doPost(ClientServlet.java:45)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:713)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at org.apache.geronimo.tomcat.valve.DefaultSubjectValve.invoke(DefaultSubjectValve.java:56)
	at org.apache.geronimo.tomcat.GeronimoStandardContext$SystemMethodValve.invoke(GeronimoStandardContext.java:406)
	at org.apache.geronimo.tomcat.valve.GeronimoBeforeAfterValve.invoke(GeronimoBeforeAfterValve.java:47)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:568)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
	at java.lang.Thread.run(Thread.java:619)
Caused by: javax.resource.spi.LocalTransactionException: Unable to rollback
	at org.tranql.connector.jdbc.ManagedJDBCConnection.localTransactionRollback(ManagedJDBCConnection.java:113)
	at org.tranql.connector.AbstractManagedConnection$LocalTransactionImpl.rollback(AbstractManagedConnection.java:197)
	at org.apache.geronimo.connector.outbound.LocalXAResource.rollback(LocalXAResource.java:86)
	... 33 more
Caused by: java.sql.SQLException: Closed Connection
	at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:125)
	at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:162)
	at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:227)
	at oracle.jdbc.driver.PhysicalConnection.rollback(PhysicalConnection.java:994)
	at org.tranql.connector.jdbc.ManagedJDBCConnection.localTransactionRollback(ManagedJDBCConnection.java:111)
	... 35 more
2009-11-10 11:05:09,484 ERROR [OpenEJB] The TransactionManager reported an exception while attempting to rollback the transaction: null

Ok.. Now the weird part is that when I click "back" on the browser and click submit again, it works fine, no error. Its like the error comes for the first time it is executed. Also, database is updated only after I shut down my WASCE server.

Any solutions ?? Please help.. Thanks