org.hibernate.HibernateException:无法获取连接

Question

我在尝试创建SQL查询时遇到此异常.我正在尝试在thread的run()方法中使用session.

Hibernate exception org.hibernate.HibernateException: Not able to obtain connection
at org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:113)
at org.hibernate.jdbc.AbstractBatcher.prepareQueryStatement(AbstractBatcher.java:88)
at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1162)
at org.hibernate.loader.Loader.doQuery(Loader.java:390)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:218)
at org.hibernate.loader.Loader.doList(Loader.java:1593)
at org.hibernate.loader.Loader.list(Loader.java:1577)
at org.hibernate.loader.custom.CustomLoader.list(CustomLoader.java:112)
at org.hibernate.impl.SessionImpl.listCustomQuery(SessionImpl.java:1414)
at org.hibernate.impl.SQLQueryImpl.list(SQLQueryImpl.java:153)

Answer 1

Java中没有手动内存管理.当对象超出范围时,该对象将自动符合回收条件.什么抓住你的物体？必须有一个类或另一个引用它的对象,因为它不能被GC回收.