感觉没做啥特别的事情啊 就根据非主键字段删除几条记录 然后插入几条记录 很容易就出现这个 Lock wait timeout exceeded; try restarting transaction

可能是因为什么原因呢？

For example:> "DELETE FROM lend_depart_viewer WHERE depart_id=195"

22:03:11 [DEBUG] com.mchange.v2.c3p0.impl.NewPooledConnection {NewPooledConnection.java:430} - com.mchange.v2.c3p0.impl.NewPooledConnection@a473fd0 handling a throwable.

java.sql.SQLException: Lock wait timeout exceeded; try restarting transaction

at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:946)

at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2934)

at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1616)

at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1708)

at com.mysql.jdbc.Connection.execSQL(Connection.java:3255)

at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1293)

at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:867)

at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.execute(NewProxyPreparedStatement.java:989)

at org.nutz.dao.impl.sql.run.NutDaoExecutor._runPreparedStatement(NutDaoExecutor.java:266)

at org.nutz.dao.impl.sql.run.NutDaoExecutor.exec(NutDaoExecutor.java:81)

at org.nutz.dao.impl.DaoSupport$DaoExec.invoke(DaoSupport.java:264)

at org.nutz.dao.impl.sql.run.NutDaoRunner.run(NutDaoRunner.java:31)

at org.nutz.dao.impl.DaoSupport._exec(DaoSupport.java:219)

at org.nutz.dao.impl.NutDao.clear(NutDao.java:606)

at com.twl.app.lend.ctrl.LendCtrlImpl$8.run(LendCtrlImpl.java:848)

at org.nutz.trans.Trans.exec(Trans.java:174)

at org.nutz.trans.Trans.exec(Trans.java:132)

at org.nutz.trans.Trans.exec(Trans.java:195)

at com.twl.app.lend.ctrl.LendCtrlImpl.updateLendViewDepart(LendCtrlImpl.java:840)

at com.twl.app.lend.ctrl.LendCtrlImpl$$FastClassByCGLIB$$cb33b7fd.invoke()

at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)

at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:700)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)

at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)

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

at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)

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

at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)

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

at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:635)

at com.twl.app.lend.ctrl.LendCtrlImpl$$EnhancerByCGLIB$$b4fe529c.updateLendViewDepart()

at com.twl.app.lend.ajax.LendAjax.updateLendViewDepart(LendAjax.java:149)

at com.twl.app.lend.ajax.LendAjax$$FastClassByCGLIB$$abe323dd.invoke()

at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)

at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:700)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)

at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)

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

at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:635)

at com.twl.app.lend.ajax.LendAjax$$EnhancerByCGLIB$$14b281a3.updateLendViewDepart()

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:606)

at org.directwebremoting.impl.ExecuteAjaxFilter.doFilter(ExecuteAjaxFilter.java:34)

at org.directwebremoting.impl.DefaultRemoter$1.doFilter(DefaultRemoter.java:428)

at org.directwebremoting.impl.DefaultRemoter.execute(DefaultRemoter.java:431)

at org.directwebremoting.impl.DefaultRemoter.execute(DefaultRemoter.java:283)

at org.directwebremoting.servlet.PlainCallHandler.handle(PlainCallHandler.java:52)

at org.directwebremoting.servlet.UrlProcessor.handle(UrlProcessor.java:101)

at org.directwebremoting.servlet.DwrServlet.doPost(DwrServlet.java:146)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:96)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

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

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)

at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)

at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1002)

at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585)

at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)

at java.lang.Thread.run(Thread.java:744)