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https://issues.apache.org/jira/browse/IBATIS-438?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Clinton Begin closed IBATIS-438.
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Resolution: Won't Fix
> SqlMapClient don't release connection in a clustered ejb based application
> --------------------------------------------------------------------------
>
> Key: IBATIS-438
> URL: https://issues.apache.org/jira/browse/IBATIS-438
> Project: iBatis for Java
> Issue Type: Bug
> Affects Versions: 2.3.0
> Environment: BEA Weblogic Server 9.2.1 Clustered, Oracle 9i, EJB 2.1,
> the trasaction manager type is JDBC with a JNDI Datasource type.
> Reporter: Nicola Amoruso
>
> I'm using JDBC transaction manager with very basic configuration. I do many
> database transactions as update and insert
> In every business method i call startTransaction() on SqlMapClient defined as
> private as instance variable into my ejb.
> At the end of my method i call commitTransaction() if the transaction end
> right and i call always endTransaction() in a finally block as specified in
> IBATIS tutorial.
> This architecture work fine in and environment without clustering, but in
> this last model i have a abnormal consuming of connections of weblogic
> connection pool with the following exception:
> com.ibatis.common.jdbc.exception.NestedSQLException:
> --- The error occurred in file: query.xml.
> --- The error occurred while executing mapped statement.
> --- Check the query.update.
> --- Check the statement or the result map.
> --- Cause: weblogic.rmi.extensions.RemoteRuntimeException: Unexpected
> Exception
> at
> com.ibatis.sqlmap.engine.mapping.statement.GeneralStatement.executeUpdate(GeneralStatement.java:94)
> at
> com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate.update(SqlMapExecutorDelegate.java:505)
> at
> com.ibatis.sqlmap.engine.impl.SqlMapSessionImpl.update(SqlMapSessionImpl.java:90)
> at
> com.ibatis.sqlmap.engine.impl.SqlMapClientImpl.update(SqlMapClientImpl.java:67)
> at it.mypkg.ejb.Business.unlockListaPersone(CqscPFBusiness.java:279)
> at
> it.mypkg.ejb.Business_17zvgu_EOImpl.businessMethod(Business_17zvgu_EOImpl.java:208)
> at it.mypkg.ejb.Business_17zvgu_EOImpl_WLSkel.invoke(Unknown Source)
> at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:518)
> at
> weblogic.rmi.cluster.ClusterableServerRef.invoke(ClusterableServerRef.java:224)
> at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:408)
> at
> weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:363)
> at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:147)
> at
> weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:404)
> at weblogic.rmi.internal.BasicServerRef.access$300(BasicServerRef.java:57)
> at
> weblogic.rmi.internal.BasicServerRef$BasicExecuteRequest.run(BasicServerRef.java:935)
> at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
> at weblogic.work.ExecuteThread.run(ExecuteThread.java:181)
> Caused by: weblogic.rmi.extensions.RemoteRuntimeException: Unexpected
> Exception
> at
> weblogic.jdbc.common.internal.RmiDataSource_920_WLStub.getConnection(Unknown
> Source)
> at
> com.ibatis.sqlmap.engine.transaction.jdbc.JdbcTransaction.init(JdbcTransaction.java:48)
> at
> com.ibatis.sqlmap.engine.transaction.jdbc.JdbcTransaction.getConnection(JdbcTransaction.java:89)
> at
> com.ibatis.sqlmap.engine.mapping.statement.GeneralStatement.executeUpdate(GeneralStatement.java:78)
> ... 16 more
> Caused by: java.rmi.UnmarshalException: cannot unmarshaling return; nested
> exception is:
> java.io.NotSerializableException: weblogic.jdbc.common.internal.ConnectionEnv
> at
> weblogic.rmi.internal.ServerRequest.unmarshalReturn(ServerRequest.java:105)
> at
> weblogic.rmi.cluster.ClusterableRemoteRef.invoke(ClusterableRemoteRef.java:338)
> at
> weblogic.rmi.cluster.ClusterableRemoteRef.invoke(ClusterableRemoteRef.java:252)
> ... 20 more
> Caused by: java.io.NotSerializableException:
> weblogic.jdbc.common.internal.ConnectionEnv
> at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1075)
> at
> java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1369)
> at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1341)
> at
> java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1284)
> at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1073)
> at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:291)
> at
> weblogic.rmi.extensions.server.CBVOutputStream.writeObject(CBVOutputStream.java:84)
> at weblogic.rmi.internal.ServerRequest.unmarshalReturn(ServerRequest.java:97)
> ... 22 more
> I fix the problem adding the following code after every endTransaction() :
> sqlMapClient.getDatasource().getConnection().close().
> Thanks in advance.
> Nicola
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