【異常處理】com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@390508 --&nb

最近項目運行時老是出現這個警告，改過不少次數據庫鏈接池配置也沒弄好，如今終於解決了。以前出錯的鏈接池配置:

Java代碼
      <property name="minPoolSize" value="5" />
     <property name="maxPoolSize" value="50" />
     <property name="maxIdleTime" value="1800" />
     <property name="acquireIncrement" value="2" />
     <property name="maxStatements" value="0" />
     <property name="initialPoolSize" value="10" />
     <property name="idleConnectionTestPeriod" value="30" />
     <property name="acquireRetryAttempts" value="30" />
出錯信息：

Java代碼
WARN - com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@390508 -- APPARENT DEADLOCK!!! Creating emergency threads for unassigned pending tasks!
WARN - com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@390508 -- APPARENT DEADLOCK!!! Complete Status:
    Managed Threads: 3
    Active Threads: 3
    Active Tasks:
        com.mchange.v2.resourcepool.BasicResourcePool$AsyncTestIdleResourceTask@1e5ed7b (com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#2)
        com.mchange.v2.resourcepool.BasicResourcePool$AsyncTestIdleResourceTask@4a4e31 (com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0)
        com.mchange.v2.resourcepool.BasicResourcePool$AsyncTestIdleResourceTask@538cc2 (com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1)
    Pending Tasks:
        com.mchange.v2.resourcepool.BasicResourcePool$AsyncTestIdleResourceTask@13e2b4a
        com.mchange.v2.resourcepool.BasicResourcePool$AsyncTestIdleResourceTask@8c1852
Pool thread stack traces:
    Thread[com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#2,5,main]
        java.net.SocketInputStream.socketRead0(Native Method)
        java.net.SocketInputStream.read(SocketInputStream.java:129)
        java.io.DataInputStream.readFully(DataInputStream.java:178)
        java.io.DataInputStream.readFully(DataInputStream.java:152)
        net.sourceforge.jtds.jdbc.SharedSocket.readPacket(SharedSocket.java:826)
        net.sourceforge.jtds.jdbc.SharedSocket.getNetPacket(SharedSocket.java:707)
        net.sourceforge.jtds.jdbc.ResponseStream.getPacket(ResponseStream.java:466)
        net.sourceforge.jtds.jdbc.ResponseStream.read(ResponseStream.java:103)
        net.sourceforge.jtds.jdbc.ResponseStream.peek(ResponseStream.java:88)
        net.sourceforge.jtds.jdbc.TdsCore.wait(TdsCore.java:3870)
        net.sourceforge.jtds.jdbc.TdsCore.executeSQL(TdsCore.java:1042)
        net.sourceforge.jtds.jdbc.JtdsStatement.executeSQLQuery(JtdsStatement.java:406)
        net.sourceforge.jtds.jdbc.JtdsPreparedStatement.executeQuery(JtdsPreparedStatement.java:696)
        net.sourceforge.jtds.jdbc.JtdsDatabaseMetaData.getTables(JtdsDatabaseMetaData.java:1823)
        com.mchange.v2.c3p0.impl.DefaultConnectionTester.activeCheckConnectionNoQuery(DefaultConnectionTester.java:185)
        com.mchange.v2.c3p0.impl.DefaultConnectionTester.activeCheckConnection(DefaultConnectionTester.java:62)
        com.mchange.v2.c3p0.AbstractConnectionTester.activeCheckConnection(AbstractConnectionTester.java:67)
        com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.testPooledConnection(C3P0PooledConnectionPool.java:368)
        com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.refurbishIdleResource(C3P0PooledConnectionPool.java:310)
        com.mchange.v2.resourcepool.BasicResourcePool$AsyncTestIdleResourceTask.run(BasicResourcePool.java:1999)
        com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)
    Thread[com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0,5,main]
        java.net.SocketInputStream.socketRead0(Native Method)
        java.net.SocketInputStream.read(SocketInputStream.java:129)
        java.io.DataInputStream.readFully(DataInputStream.java:178)
        java.io.DataInputStream.readFully(DataInputStream.java:152)
        net.sourceforge.jtds.jdbc.SharedSocket.readPacket(SharedSocket.java:826)
        net.sourceforge.jtds.jdbc.SharedSocket.getNetPacket(SharedSocket.java:707)
        net.sourceforge.jtds.jdbc.ResponseStream.getPacket(ResponseStream.java:466)
        net.sourceforge.jtds.jdbc.ResponseStream.read(ResponseStream.java:103)
        net.sourceforge.jtds.jdbc.ResponseStream.peek(ResponseStream.java:88)
        net.sourceforge.jtds.jdbc.TdsCore.wait(TdsCore.java:3870)
        net.sourceforge.jtds.jdbc.TdsCore.executeSQL(TdsCore.java:1042)
        net.sourceforge.jtds.jdbc.JtdsStatement.executeSQLQuery(JtdsStatement.java:406)
        net.sourceforge.jtds.jdbc.JtdsPreparedStatement.executeQuery(JtdsPreparedStatement.java:696)
        net.sourceforge.jtds.jdbc.JtdsDatabaseMetaData.getTables(JtdsDatabaseMetaData.java:1823)
        com.mchange.v2.c3p0.impl.DefaultConnectionTester.activeCheckConnectionNoQuery(DefaultConnectionTester.java:185)
        com.mchange.v2.c3p0.impl.DefaultConnectionTester.activeCheckConnection(DefaultConnectionTester.java:62)
        com.mchange.v2.c3p0.AbstractConnectionTester.activeCheckConnection(AbstractConnectionTester.java:67)
        com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.testPooledConnection(C3P0PooledConnectionPool.java:368)
        com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.refurbishIdleResource(C3P0PooledConnectionPool.java:310)
        com.mchange.v2.resourcepool.BasicResourcePool$AsyncTestIdleResourceTask.run(BasicResourcePool.java:1999)
        com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)
    Thread[com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1,5,main]
        java.net.SocketInputStream.socketRead0(Native Method)
        java.net.SocketInputStream.read(SocketInputStream.java:129)
        java.io.DataInputStream.readFully(DataInputStream.java:178)
        java.io.DataInputStream.readFully(DataInputStream.java:152)
        net.sourceforge.jtds.jdbc.SharedSocket.readPacket(SharedSocket.java:826)
        net.sourceforge.jtds.jdbc.SharedSocket.getNetPacket(SharedSocket.java:707)
        net.sourceforge.jtds.jdbc.ResponseStream.getPacket(ResponseStream.java:466)
        net.sourceforge.jtds.jdbc.ResponseStream.read(ResponseStream.java:103)
        net.sourceforge.jtds.jdbc.ResponseStream.peek(ResponseStream.java:88)
        net.sourceforge.jtds.jdbc.TdsCore.wait(TdsCore.java:3870)
        net.sourceforge.jtds.jdbc.TdsCore.executeSQL(TdsCore.java:1042)
        net.sourceforge.jtds.jdbc.JtdsStatement.executeSQLQuery(JtdsStatement.java:406)
        net.sourceforge.jtds.jdbc.JtdsPreparedStatement.executeQuery(JtdsPreparedStatement.java:696)
        net.sourceforge.jtds.jdbc.JtdsDatabaseMetaData.getTables(JtdsDatabaseMetaData.java:1823)
        com.mchange.v2.c3p0.impl.DefaultConnectionTester.activeCheckConnectionNoQuery(DefaultConnectionTester.java:185)
        com.mchange.v2.c3p0.impl.DefaultConnectionTester.activeCheckConnection(DefaultConnectionTester.java:62)
        com.mchange.v2.c3p0.AbstractConnectionTester.activeCheckConnection(AbstractConnectionTester.java:67)
        com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.testPooledConnection(C3P0PooledConnectionPool.java:368)
        com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.refurbishIdleResource(C3P0PooledConnectionPool.java:310)
        com.mchange.v2.resourcepool.BasicResourcePool$AsyncTestIdleResourceTask.run(BasicResourcePool.java:1999)
        com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)

當鏈接池配置改成

Java代碼
<property name="minPoolSize" value="0" />
<property name="maxPoolSize" value="50" />
<property name="maxIdleTime" value="1800" />
<!-- 當鏈接池耗盡時候，一次得到鏈接數-->
<property name="acquireIncrement" value="5" />
<property name="maxStatements" value="0" />
<!-- 當鏈接池鏈接耗盡時，客戶端getConnection(),所等待的時間-->
<property name="checkoutTimeout" value="20000"/>
<property name="idleConnectionTestPeriod" value="120" />
<!-- 當鏈接失效時，得到鏈接的次數，0爲無限次（重連）-->
<property name="acquireRetryAttempts" value="30" />

新的出錯信息：

Java代碼WARN - SQL Error: 0, SQLState: nullERROR - An attempt by a client to checkout a Connection has timed out.WARN - SQL Error: 0, SQLState: nullERROR - An attempt by a client to checkout a Connection has timed out.org.hibernate.exception.GenericJDBCException: Cannot open connection   at org.hibernate.exception.SQLStateConverter.handledNonSpecificException(SQLStateConverter.java:103)   at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:91)   at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)   at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:29)   at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:426)   at org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:144)   at org.hibernate.jdbc.AbstractBatcher.prepareQueryStatement(AbstractBatcher.java:139)   at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1547)   at org.hibernate.loader.Loader.doQuery(Loader.java:673)   at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236)   at org.hibernate.loader.Loader.doList(Loader.java:2220)   at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2104)   at org.hibernate.loader.Loader.list(Loader.java:2099)   at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:378)   at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:338)   at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172)   at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)   at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)   at org.hibernate.impl.AbstractQueryImpl.uniqueResult(AbstractQueryImpl.java:811)   at com.chinanfs.nfp.systemManage.user.dao.impl.UserDaoImpl.queryObjectById(UserDaoImpl.java:489)   at com.chinanfs.nfp.systemManage.user.service.impl.UserServiceImpl.queryObjectById(UserServiceImpl.java:347)   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)   at java.lang.reflect.Method.invoke(Method.java:597)   at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:310)   at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)   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.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)   at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)   at $Proxy35.queryObjectById(Unknown Source)   at com.chinanfs.nfp.systemManage.user.action.UserAction.queryObject(UserAction.java:377)   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)   at java.lang.reflect.Method.invoke(Method.java:597)   at com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:441)   at com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:280)   at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:243)   at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:165)   at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)   at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)   at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:252)   at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)   at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)   at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)   at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:122)   at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)   at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195)   at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)   at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)   at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195)   at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)   at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)   at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:179)   at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)   at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:75)   at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)   at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:94)   at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)   at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:235)   at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)   at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:89)   at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)   at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:130)   at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)   at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:267)   at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)   at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:126)   at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)   at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:138)   at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)   at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)   at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:165)   at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)   at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)   at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)   at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:179)   at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)   at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:176)   at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)   at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52)   at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:488)   at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)   at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:91)   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:76)   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(Thread.java:619)Caused by: java.sql.SQLException: An attempt by a client to checkout a Connection has timed out.   at com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:106)