too many connections ! 急, 谢谢!
spring + hibernate + mysql
大家请帮我看看:
为什么项目一发布到Tomcat 上就会经常发生
org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Data source rejected establishment of connection, message from server: "Too many connections")
org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1225)
org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:880)
org.springframework.orm.hibernate3.LocalDataSourceConnectionProvider.getConnection(LocalDataSourceConnectionProvider.java:81)
org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:423)
org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:144)
org.hibernate.jdbc.AbstractBatcher.prepareQueryStatement(AbstractBatcher.java:139)
org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1547)
org.hibernate.loader.Loader.doQuery(Loader.java:673)
..............................................
..............................................
因为在测试中 不会发生这种情况,而发布到Tomcat 就会发生, spring配置应该没有问题
applicationContext.xml:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<bean id="dataSource"
class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName">
<value>com.mysql.jdbc.Driver</value>
</property>
<property name="url">
<value>jdbc:mysql:///test</value>
</property>
<property name="username">
<value>root</value>
</property>
<property name="password">
<value>root</value>
</property>
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource">
<ref bean="dataSource" />
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">
org.hibernate.dialect.MySQLDialect
</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.generate_statistics">true</prop>
<prop key="hibernate.connection.release_mode">
auto
</prop>
<prop key="hibernate.autoReconnect">true</prop>
</props>
</property>
<property name="mappingResources">
<list>
<value>com/kk/entity/User.hbm.xml</value>
</list>
</property>
</bean>
<bean id="userDAO" class="com.kk.dao.impl.UserDAOImpl">
<property name="sessionFactory">
<ref bean="sessionFactory" />
</property>
</bean>
<bean id="actUser" class="com.kk.business.impl.ActionUserImpl">
</bean>
</beans>
所以一定是发布的时候出了什么问题 (也许不是Tomcat ,或是我的配置有什么不对吗?)