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<p style="margin: 10px 0 0 0">Hello Brett Meyer, We have been fighting with this issue for a while, every week we have to restart our service. I am attaching the error below. Is this related to this bug or something different ???</p>
<p style="margin: 10px 0 0 0">We are using Hibernate 3.2, ehcache 2.6.6 and terracotta-3.7.5..</p>
<p style="margin: 10px 0 0 0">ERROR 2014-08-04 09:42:51,918 org.hibernate.engine.ActionQueue pool-1-thread-33 - could not release a cache lock<br /> org.hibernate.cache.CacheException: net.sf.ehcache.CacheException: Underlying Terracotta connection closed! Can't act on clustered lock anymore... <br /> at net.sf.ehcache.hibernate.regions.EhcacheTransactionalDataRegion.writeLock(EhcacheTransactionalDataRegion.java:204)<br /> at net.sf.ehcache.hibernate.strategy.ReadWriteEhcacheEntityRegionAccessStrategy.afterUpdate(ReadWriteEhcacheEntityRegionAccessStrategy.java:92)<br /> at net.sf.ehcache.hibernate.nonstop.NonstopAwareEntityRegionAccessStrategy.afterUpdate(NonstopAwareEntityRegionAccessStrategy.java:82)<br /> at org.hibernate.action.EntityUpdateAction.afterTransactionCompletion(EntityUpdateAction.java:256)<br /> at org.hibernate.engine.ActionQueue.afterTransactionCompletion(ActionQueue.java:198)<br /> at org.hibernate.impl.SessionImpl.afterTransactionCompletion(SessionImpl.java:452)<br /> at org.hibernate.jdbc.JDBCContext.afterTransactionCompletion(JDBCContext.java:252)<br /> at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:150)<br /> at org.springframework.orm.hibernate3.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:655)<br /> at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:709)<br /> at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:678)<br /> at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:321)<br /> at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:116)<br /> at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)<br /> at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:635)<br /> at com.X.Y.dao.createDAO$$EnhancerByCGLIB$$1da8f8bd.saveBatch(<generated>)<br /> at com.X.Y.service.XyzServlet.createObjectX(XYZ.java:197)</p>
<p style="margin: 10px 0 0 0"> Here is the saveBatch method:</p>
<p style="margin: 10px 0 0 0">@Transactional(readOnly = false,isolation = Isolation.READ_COMMITTED, propagation = Propagation.REQUIRED) <br /> @Override<br /> public String saveBatch(final T obj){<br /> String id = null;<br /> try {<br /> /**</p>
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This code will create a new session if one is not already bound to the thread, execute the callback code,
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then close the session and release the database connection back to the pool.
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Making direct calls to the SessionFactory is not recommended because it is very easy to leak database connections if the sessions are not closed properly.<br /> */<br /> id = (String) getHibernateTemplate().execute(new HibernateCallback()
<div class="error">
<span class="error">Unknown macro: { public Object doInHibernate(Session session) throws HibernateException,SQLException { session.setCacheMode(CacheMode.IGNORE); String id = (String)session.save(obj); return id; } }</span>
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<p style="margin: 10px 0 0 0">);<br /> } catch (JDBCException e) </p> { log.error(e.getLocalizedMessage()); } catch (HibernateException e) { log.error(e.getLocalizedMessage()); }
<p style="margin: 10px 0 0 0"> finally </p> { // }
<p style="margin: 10px 0 0 0"> return id;<br /> }</p>
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<p style="margin: 10px 0 0 0">Note: The object we are persisting has is object A -> collections of Y's -> Y has a collections of Z's.</p>
<p style="margin: 10px 0 0 0">We pass object A to saveBatch method...</p>
<p style="margin: 10px 0 0 0">Hibernate mapping:</p>
<p style="margin: 10px 0 0 0">A mapping:</p>
<p style="margin: 10px 0 0 0"><?xml version="1.0"?><br /> <!DOCTYPE hibernate-mapping PUBLIC<br /> "-//Hibernate/Hibernate Mapping DTD 3.0//EN"<br /> "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"><br /> <hibernate-mapping package="com.x.y"><br /> <class name="A" table="A"><br /> <cache usage="read-write" /><br /> <id name="id" length="36" column="id"><br /> <generator class="org.hibernate.id.GUIDGenerator" /><br /> </id><br /> <set name="Y" table="A_Y" cascade="all-delete-orphan" lazy="false" inverse="false" fetch="select"><br /> <cache usage="read-write" /><br /> <key column="id" not-null="true" update="false"/><br /> <many-to-many column="y_id" class="Y" /><br /> </set> <br /> </class><br /> </hibernate-mapping></p>
<p style="margin: 10px 0 0 0">Y mapping:</p>
<p style="margin: 10px 0 0 0"><?xml version="1.0"?><br /> <!DOCTYPE hibernate-mapping PUBLIC<br /> "-//Hibernate/Hibernate Mapping DTD 3.0//EN"<br /> "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"><br /> <hibernate-mapping package="com.x.y"><br /> <class name="Y" table="Y"><br /> <cache usage="read-write" /><br /> <id name="id" length="36" column="id"><br /> <generator class="org.hibernate.id.GUIDGenerator" /><br /> </id><br /> <set name="properties" lazy="false" cascade="all-delete-orphan" inverse="false"><br /> <cache usage="read-write" /><br /> <key column="Y_id" not-null="true" update="true"/><br /> <one-to-many class="Property" /><br /> </set> <br /> </class><br /> </hibernate-mapping></p>
<p style="margin: 10px 0 0 0">Property mapping:</p>
<p style="margin: 10px 0 0 0"><?xml version="1.0"?><br /> <!DOCTYPE hibernate-mapping PUBLIC<br /> "-//Hibernate/Hibernate Mapping DTD 3.0//EN"<br /> "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"><br /> <hibernate-mapping package="com.sensorlogic.device"><br /> <class name="Property" table="property"><br /> <cache usage="read-write" /><br /> <id name="id" length="36" column="id"><br /> <generator class="org.hibernate.id.GUIDGenerator" /><br /> </id><br /> <many-to-one name="Y" class="Y" column="Y_id" update="false" insert="false"/><br /> </class><br /> </hibernate-mapping></p>
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