查看服务器的log日志的时候,发现服务器中经常报一些如下的错误：

2009-02-06 08:22:20,588 INFO [cn.legend.myznt.util.SystemExceptionHandler] - 出现异常

org.springframework.transaction.CannotCreateTransactionException: Could not open Hibernate Session for transaction; nested exception is org.hibernate.TransactionException: JDBC begin failed:

Caused by:

org.hibernate.TransactionException: JDBC begin failed:

at org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:68)

at org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:1290)

at org.springframework.orm.hibernate3.HibernateTransactionManager.doBegin(HibernateTransactionManager.java:510)

at org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:350)

at org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:262)

at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:101)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)

at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:629)

at cn.qdrk.strive.dao.hibernate.UserDaoHibernate$$EnhancerByCGLIB$$10afb0ec.queryAccount()

at cn.qdrk.strive.struts.action.LoginAction.execute(LoginAction.java:44)

at org.springframework.web.struts.DelegatingActionProxy.execute(DelegatingActionProxy.java:110)

at org.apache.struts.chain.commands.servlet.ExecuteAction.execute(ExecuteAction.java:58)

at org.apache.struts.chain.commands.AbstractExecuteAction.execute(AbstractExecuteAction.java:67)

at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)

at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)

at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304)

at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)

at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)

at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)

at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:96)

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:75)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:75)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)

at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)

at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)

at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)

at java.lang.Thread.run(Unknown Source)

Caused by: com.mysql.jdbc.CommunicationsException: Communications link failure

Last packet sent to the server was 120 ms ago.

at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1070)

at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2985)

at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2871)

at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3414)

at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1936)

at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2060)

at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2536)

at com.mysql.jdbc.ConnectionImpl.setAutoCommit(ConnectionImpl.java:4874)

at org.apache.tomcat.dbcp.dbcp.DelegatingConnection.setAutoCommit(DelegatingConnection.java:331)

at org.apache.tomcat.dbcp.dbcp.PoolingDataSource$PoolGuardConnectionWrapper.setAutoCommit(PoolingDataSource.java:317)

at org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:63)

... 41 more

Caused by: java.net.SocketException: Software caused connection abort: recv failed

at java.net.SocketInputStream.socketRead0(Native Method)

at java.net.SocketInputStream.read(Unknown Source)

at com.mysql.jdbc.util.ReadAheadInputStream.fill(ReadAheadInputStream.java:113)

at com.mysql.jdbc.util.ReadAheadInputStream.readFromUnderlyingStreamIfNecessary(ReadAheadInputStream.java:160)

at com.mysql.jdbc.util.ReadAheadInputStream.read(ReadAheadInputStream.java:188)

at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:2428)

at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2882)

... 50 more

感觉数据库好像有时没连上，但是过一会好像就好了，我的tomcat配置的链接池如下：

maxWait = "10000" maxActive = "10" username = "root" password = "123456"

driverClassName = "com.mysql.jdbc.Driver"

url = "jdbc:mysql://localhost:3306/test?zeroDateTimeBehavior=convertToNull" />

applicationContext.xml中配置如下：

class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">

这个是因为mysql不稳定，还是tomcat配置的链接池的问题？万分感谢！