-----Original Message-----
From: Vijendra Pachoriya [mailto:vijendra.pachor...@indegene.com]
Sent: Tuesday, July 01, 2014 2:31 AM
To: users@tomcat.apache.org
Cc: Alok Roy
Subject: Error in DBCP Connection Pool with tomcat 6.x
Hi Tomcat Team,
Please help me out in solving below error.
Below is the details :
================Configuration in my context.xml============================
<Resource name="jdbc/ABC"
auth="Container"
type="javax.sql.DataSource"
maxActive="50"
maxIdle="10"
maxWait="10000"
username="ABC"
password="ABC"
removeAbandoned="true"
logAbandoned="true"
testOnBorrow="true"
testWhileIdle="true"
timeBetweenEvictionRunsMillis="30000"
validationQuery="SELECT 1 FROM dual"
driverClassName="oracle.jdbc.driver.OracleDriver"
url="jdbc:oracle:thin:@MY_DB" />
==========================Error Message
============================================
at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:705)
at
org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:898)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)
at java.lang.Thread.run(Thread.java:679)
Caused by: org.springframework.transaction.TransactionSystemException: Could
not roll back JPA transaction; nested exception is
javax.persistence.PersistenceException: unexpected error when rollbacking
at
org.springframework.orm.jpa.JpaTransactionManager.doRollback(JpaTransactionManager.java:486)
at
org.springframework.transaction.support.AbstractPlatformTransactionManager.processRollback(AbstractPlatformTransactionManager.java:800)
at
org.springframework.transaction.support.AbstractPlatformTransactionManager.rollback(AbstractPlatformTransactionManager.java:777)
at
org.springframework.transaction.interceptor.TransactionAspectSupport.completeTransactionAfterThrowing(TransactionAspectSupport.java:339)
at
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at sun.proxy.$Proxy185.selectPharmaUser(Unknown Source)
at
com.aptilon.axcelrx.server.service.impl.AuthenticationServiceImpl.login(AuthenticationServiceImpl.java:170)
at
com.aptilon.axcelrx.server.ws.endpoint.AuthenticationEndpoint.login_aroundBody0(AuthenticationEndpoint.java:110)
... 45 more
Caused by: javax.persistence.PersistenceException: unexpected error when
rollbacking
at org.hibernate.ejb.TransactionImpl.rollback(TransactionImpl.java:88)
at
org.springframework.orm.jpa.JpaTransactionManager.doRollback(JpaTransactionManager.java:482)
... 54 more
Caused by: org.hibernate.exception.GenericJDBCException: Cannot release
connection
at
org.hibernate.exception.SQLStateConverter.handledNonSpecificException(SQLStateConverter.java:126)
at
org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:114)
at
org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
at
org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:52)
at
org.hibernate.jdbc.ConnectionManager.closeConnection(ConnectionManager.java:478)
at
org.hibernate.jdbc.ConnectionManager.aggressiveRelease(ConnectionManager.java:429)
at
org.hibernate.jdbc.ConnectionManager.afterTransaction(ConnectionManager.java:316)
at
org.hibernate.jdbc.JDBCContext.afterTransactionCompletion(JDBCContext.java:248)
at
org.hibernate.transaction.JDBCTransaction.rollback(JDBCTransaction.java:208)
at org.hibernate.ejb.TransactionImpl.rollback(TransactionImpl.java:85)
... 55 more
Caused by: java.sql.SQLException: Already closed.
at
org.apache.tomcat.dbcp.dbcp.PoolableConnection.close(PoolableConnection.java:114)
at
org.apache.tomcat.dbcp.dbcp.PoolingDataSource$PoolGuardConnectionWrapper.close(PoolingDataSource.java:191)
at
org.hibernate.connection.DatasourceConnectionProvider.closeConnection(DatasourceConnectionProvider.java:97)
at
org.hibernate.jdbc.ConnectionManager.closeConnection(ConnectionManager.java:474)
... 60 more
===========================================================================
Your help in this regard is highly appreciated.
Thanks & Regards,
Vijendra
-----------
I've also got these attributes in my xml file, FWIW.
name="jdbc/myoracle"
timeBetweenEvictionRunsMillis="-1" (you show 30000) - I think I had to move
it to this to avoid some faulty issue, per Konstantin
minEvictableIdleTimeMillis="28800"
removeAbandonedTimeout="300"
logAbandoned="false"
I say this, because I, too, was using a Tomcat 6.x version - 6.0.29 to be exact.
On the surface it looks like some error is occurring during the commit, and
then trying to roll back, but then your connection is maybe closing before it
can roll back?
HTH,
Barry
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