I am using cdo, on top of teneo on top of hibernate on top of postgresql.
After a tcp connection close (hibernating my laptop) I ran into an exception which seemingly means that hibernate tries to begin a transaction on a closed db connection (see at bottom).

I was looking for the issue in the bugzilla, there was one similar bug with Oracle, and the submitter was sent here, but I could not find the corresponding topic. There is one which might be related (viewtopic.php?f=1&t=957369), but I cannot see a useable conclusion there.
On the postgresql jdbc list it has been suggested that I should use a connection pool setting which checks the connection before actually uses it: http://archives.postgresql.org/pgsql-jd ... g00018.php
I could not identify such setting in hibernate documentation.

Question: what settings should I use?

My hibernate related settings:
<property name="hibernate.hbm2ddl.auto" value="update"/>
<property name="hibernate.show_sql" value="false"/>
<property name="hibernate.connection.pool_size" value="10"/>
<property name="hibernate.cache.provider_class" value="org.hibernate.cache.HashtableCacheProvider"/>
<property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQLDialect"/>
<property name="hibernate.connection.driver_class" value="org.postgresql.Driver"/>
<property name="hibernate.connection.url" value="jdbc:postgresql://localhost:5433/cdo"/>
<property name="hibernate.connection.username" value="cdo"/>
<property name="hibernate.connection.password" value="cdo"/>
<property name="hibernate.connection.autocommit" value="false"/>
<property name="hibernate.connection.release_mode" value="after_statement"/>

org.hibernate.exception.JDBCConnectionException: Cannot open connection
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:99)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:52)
at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:449)
at org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:167)
at org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:160)
at org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:81)
at org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:1473)
at org.eclipse.emf.cdo.server.internal.hibernate.HibernateStoreAccessor.beginHibernateSession(HibernateStoreAccessor.java:194)
at org.eclipse.emf.cdo.server.internal.hibernate.HibernateStoreAccessor.getHibernateSession(HibernateStoreAccessor.java:266)
at org.eclipse.emf.cdo.server.internal.hibernate.HibernateUtil.getHibernateSession(HibernateUtil.java:240)
at org.eclipse.emf.cdo.server.internal.hibernate.HibernateUtil.getCDORevision(HibernateUtil.java:451)
at org.eclipse.emf.cdo.server.internal.hibernate.HibernateStoreAccessor.readRevision(HibernateStoreAccessor.java:363)
at org.eclipse.emf.cdo.internal.server.Repository.loadRevisions(Repository.java:439)
at org.eclipse.emf.cdo.internal.common.revision.CDORevisionManagerImpl.loadRevisions(CDORevisionManagerImpl.java:365)
at org.eclipse.emf.cdo.internal.common.revision.CDORevisionManagerImpl.getRevisions(CDORevisionManagerImpl.java:276)
at org.eclipse.emf.cdo.internal.common.revision.CDORevisionManagerImpl.getRevision(CDORevisionManagerImpl.java:259)
at org.eclipse.emf.cdo.spi.common.revision.RevisionInfo.execute(RevisionInfo.java:132)
at org.eclipse.emf.cdo.server.internal.net4j.protocol.LoadRevisionsIndication.responding(LoadRevisionsIndication.java:169)
at org.eclipse.emf.cdo.server.internal.net4j.protocol.CDOServerIndication.responding(CDOServerIndication.java:133)
at org.eclipse.net4j.signal.IndicationWithResponse.doExtendedOutput(IndicationWithResponse.java:96)
at org.eclipse.net4j.signal.Signal.doOutput(Signal.java:296)
at org.eclipse.net4j.signal.IndicationWithResponse.execute(IndicationWithResponse.java:65)
at org.eclipse.emf.cdo.server.internal.net4j.protocol.CDOServerReadIndication.execute(CDOServerReadIndication.java:36)
at org.eclipse.net4j.signal.Signal.runSync(Signal.java:251)
at org.eclipse.net4j.signal.Signal.run(Signal.java:147)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:679)
Caused by: org.postgresql.util.PSQLException: This connection has been closed.
at org.postgresql.jdbc2.AbstractJdbc2Connection.checkClosed(AbstractJdbc2Connection.java:714)
at org.postgresql.jdbc2.AbstractJdbc2Connection.getAutoCommit(AbstractJdbc2Connection.java:680)
at org.hibernate.connection.DriverManagerConnectionProvider.getConnection(DriverManagerConnectionProvider.java:127)
at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:446)
... 25 more