Hinbernate操作数据库必须要开启事务, 但是在添加事务的时候遇到这个问题也是郁闷, 说Session被关闭了, 而这个Session又是必须的. 关键是我并没有关闭, 也找不到是哪里被关闭了的. 我把代码改成如下的样子, 则是可以运行的, 在执行之前,开启事务 /** * 查询用户 * @param uid * @return */ @Override public User get(Integer uid) { Transaction transaction = session.beg…

org.hibernate.SessionException: Session was already closedat org.hibernate.internal.SessionImpl.close(SessionImpl.java:411)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccess…

今天写hibernate时候遇到一些异常 代码: Session session = sessionFactory.getCurrentSession(); session.beginTransaction(); session.save(t); session.getTransaction().commit();session.close(); System.out.println(t.getId()); 出现异常情况: 出现以上原因是Session关闭 如果不是使用的SessionFacto…

现场报网公司数据库连不上,先检查了下数据库processes=1500,session=2200.我认为非常大啊.这个数据库没有几个人用. 查看v$session中的session最多是哪个machine发起的.发现是省公司的数据库发起的session,找开发梳理了下业务,省公司同步dblink操作网公司表,且是通过weblogic的连接池. 哦,有点明确了,是dblink引起的.weblogic连接池是一直存在的,所以在网公司端session是不释放的.假设省公司把应用都停掉,那在网公司端的s…

1.出现于:FortiGate v5.0和v5.2 2.出现原因 Session clash messages appear in the logs when a new session is created but a conflicting similar session already exists. When session clash happens, the old session will be closed and replaced by the new one. The onl…

<bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean> <tx:advice id="txAdvice" transact…

Persistence Persistence类使用于获取EntityManagerFactory实例,该类包含一个名为createEntityManagerFactory的静态方法. // 创建EntityManagerFactory String persistenceUnitName = "Jpa-helloword"; EntityManagerFactory entityManagerFactory = Persistence.createEntityManagerFacto…

Chapter 4 - Session The Session is at the heart of MINA : every time a client connects to the server, a new session is created, and will be kept in memory until the client is disconnected. A session is used to store persistent informations about the…

This article explains how to configure the following settings in Hive:hive.server2.session.check.intervalhive.server2.idle.operation.timeout hive.server2.idle.session.timeout 1). hive.server2.idle.session.timeoutSession will be closed when not access…

13.2.1. About JPA The Java Persistence API (JPA) is the standard for using persistence in Java projects. Java EE 6 applications use the Java Persistence 2.0 specification, documented here: http://www.jcp.org/en/jsr/detail?id=317.Hibernate EntityManag…