tomcat启动一段时间，运行程序出错,Could not roll back JPA transaction

a506690 2010-10-14 09:35:37

程序放在tomcat，启动tomcat，运行没问题，但是过一段时间，再运行这个程序，就报错了。
异常：org.springframework.transaction.TransactionSystemException: Could not roll back
JPA transaction; nested exception is javax.persistence.PersistenceException: une
xpected error when rollbacking

框架：struts2+jpa+spring2.5

在网上查资料，说连接mysql会出现这样的情况，我连的informix，我想是不是和mysql有同样的错误。

以为是连接池小了，改了连接池，还是一样报错。

下面我贴一下我的配置文件：

applicationContext.xml



<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

	xmlns:tx="http://www.springframework.org/schema/tx"

	xmlns:context="http://www.springframework.org/schema/context"

	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd

            http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd 

            http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd">

	<context:annotation-config />

	<!-- *** FOLLOWING CONFIGURATION  IS BASIC LINE,DON NOT CHANGE ***-->



	<!-- BeanPostProcessor that processes PersistenceUnit  and PersistenceContext annotations -->

	<bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />



<bean id="entityManagerFactory"

		class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean">

		<property name="persistenceUnitName" value="dzInter" />

		<property name="jpaVendorAdapter">

			<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">

				<property name="showSql" value="true"></property>

				<property name="database" value="INFORMIX"></property>

				<property name="generateDdl" value="true"></property>

				<property name="databasePlatform" value="org.hibernate.dialect.InformixDialect"></property>

			</bean>

		</property>

	</bean>

	<bean id="transactionManager"

		class="org.springframework.orm.jpa.JpaTransactionManager">

		<property name="entityManagerFactory"

			ref="entityManagerFactory" />

	</bean>

	<tx:annotation-driven  transaction-manager="transactionManager" /></beans>

persistence.xml



<?xml version="1.0" encoding="UTF-8"?>

<persistence xmlns="http://java.sun.com/xml/ns/persistence"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xsi:schemaLocation="http://java.sun.com/xml/ns/persistence

    http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd" version="1.0">

    

	<persistence-unit name="dzInter" transaction-type="RESOURCE_LOCAL">

	<provider>org.hibernate.ejb.HibernatePersistence</provider>

  		<properties>

  		<property name="hibernate.show_sql" value="true" />

  			<property name="hibernate.format_sql" value="true" />

  			<property name="hibernate.hbm2ddl.auto" value="update" />

			<property name = "hibernate.connection.driver_class" value = "com.informix.jdbc.IfxDriver"/>

			<property name = "hibernate.connection.url" value = "jdbc:informix-sqli://192.168.254.89:8192/dzppt_srv:INFORMIXSERVER=diccyw_web"/>

			<property name = "hibernate.connection.username" value = "webdba"/>

			<property name = "hibernate.connection.password" value = "ywawebdba"/>

			<!--连接池中保留的最小连接数-->

		<property name="minPoolSize" value="1" />



		<!--连接池中保留的最大连接数 Default: 15 -->

		<property name="maxPoolSize" value="20" />



		<!--初始化时获取的连接数，取值应在minPoolSize与maxPoolSize之间 Default: 3 -->

		<property name="initialPoolSize" value="2" />



		<!--最大空闲时间,60秒内未使用则连接被丢弃。若为0则永不丢弃 Default: 0 -->

		<property name="maxIdleTime" value="1800" />



		<!--当连接池中的连接耗尽的时候c3p0一次同时获取的连接数 Default: 3 -->

		<property name="acquireIncrement" value="30" />



	  	</properties>

	  	

	  	

	</persistence-unit>

  

</persistence>