SQL错误：0，SQLState：08S01通信链接失败

时间：2013-05-09 10:49:42

标签： java mysql hibernate jdbc

我收到此错误（不常见）：

2013-05-08 16:44:35,786  WARN (JDBCExceptionReporter.java:100) [org.hibernate.util.JDBCExceptionReporter, logExceptions] - SQL Error: 0, SQLState: 08S01
2013-05-08 16:44:35,786 ERROR (JDBCExceptionReporter.java:101) [org.hibernate.util.JDBCExceptionReporter, logExceptions] - Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
2013-05-08 16:44:35,833 ERROR (AdminDaoImpl.java:297) [com.myapp.admin.db.AdminDaoImpl, createFilePackage] - data-upload: Exception while adding new file package
org.hibernate.exception.JDBCConnectionException: Cannot open connection
    at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:97) [hibernate-core-3.3.2.GA.jar:3.3.2.GA]
    at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66) [hibernate-core-3.3.2.GA.jar:3.3.2.GA]
    at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:52) [hibernate-core-3.3.2.GA.jar:3.3.2.GA]
    at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:449) [hibernate-core-3.3.2.GA.jar:3.3.2.GA]
    at org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:167) [hibernate-core-3.3.2.GA.jar:3.3.2.GA]
    at org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:142) [hibernate-core-3.3.2.GA.jar:3.3.2.GA]
    at org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:85) [hibernate-core-3.3.2.GA.jar:3.3.2.GA]
    at org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:1354) [hibernate-core-3.3.2.GA.jar:3.3.2.GA]
    at com.myapp.admin.db.AdminDaoImpl. createFilePackage(AdminDaoImpl.java:182) [AdminDaoImpl.class:na]
    at com.myapp.admin.ctrl.UploadController.processUploadZip(UploadController.java:217) [UploadController.class:na]
    at sun.reflect.GeneratedMethodAccessor106.invoke(Unknown Source) [na:na]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [na:1.6.0_35]
    at java.lang.reflect.Method.invoke(Method.java:597) [na:1.6.0_35]
    at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:212) [spring-web-3.1.0.RELEASE.jar:3.1.0.RELEASE]
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126) [spring-web-3.1.0.RELEASE.jar:3.1.0.RELEASE]
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96) [spring-webmvc-3.1.0.RELEASE.jar:3.1.0.RELEASE]
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617) [spring-webmvc-3.1.0.RELEASE.jar:3.1.0.RELEASE]
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578) [spring-webmvc-3.1.0.RELEASE.jar:3.1.0.RELEASE]
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80) [spring-webmvc-3.1.0.RELEASE.jar:3.1.0.RELEASE]
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:900) [spring-webmvc-3.1.0.RELEASE.jar:3.1.0.RELEASE]
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:827) [spring-webmvc-3.1.0.RELEASE.jar:3.1.0.RELEASE]
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882) [spring-webmvc-3.1.0.RELEASE.jar:3.1.0.RELEASE]
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789) [spring-webmvc-3.1.0.RELEASE.jar:3.1.0.RELEASE]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:647) [servlet-api.jar:na]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) [servlet-api.jar:na]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) [catalina.jar:7.0.35]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) [catalina.jar:7.0.35]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) [catalina.jar:7.0.35]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) [catalina.jar:7.0.35]
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) [catalina.jar:7.0.35]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) [catalina.jar:7.0.35]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99) [catalina.jar:7.0.35]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) [catalina.jar:7.0.35]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) [catalina.jar:7.0.35]
    at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:200) [tomcat-coyote.jar:7.0.35]
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589) [tomcat-coyote.jar:7.0.35]
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310) [tomcat-coyote.jar:7.0.35]
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [na:1.6.0_35]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [na:1.6.0_35]
    at java.lang.Thread.run(Thread.java:662) [na:1.6.0_35]
Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

我在共享服务器上托管了两个web（spring mvc + hibernate + mysql）应用程序：

1）主应用程序显示要下载的文件（通过管理员应用程序插入）

2）具有CRUD操作的管理员应用程序

当我使用“admin”应用程序上传“main”应用程序的文件时，会出现此错误，假设可能是在成功上传/处理大约100-120个文件/请求之后以及每次请求使用10-数据库命中数据库时20个插入/更新查询。

主持详情：

Private tomcat hosting
java 1.6.0_35-b10
tomcat 7.0.35
heap size 288MB
MySQL Server 5
commons-dbcp 1.2.2
mysql-connector-java 5.1.9

数据库+ Hibernate + DBCP属性：

<bean id="dbDataSource" class="org.apache.commons.dbcp.BasicDataSource">
    <property name="driverClassName" value="com.mysql.jdbc.Driver" />
    <property name="username" value="test" />
    <property name="password" value="test" />
    <property name="url" value="jdbc:mysql://localhost/my_database?useUnicode=yes&characterEncoding=UTF-8" />

    <!-- DBCP Connection Pool Settings -->
    <property name="defaultAutoCommit" value="true" />
    <property name="initialSize" value="10" />
    <property name="maxActive" value="500" />
    <property name="maxIdle" value="8" />
    <property name="minIdle" value="0" />
    <property name="maxWait" value="30000" />
    <property name="validationQuery" value="SELECT 1" />
    <property name="testOnBorrow" value="true" />
    <property name="testOnReturn" value="false" />
    <property name="testWhileIdle" value="false" />
    <property name="timeBetweenEvictionRunsMillis" value="-1" />
    <property name="numTestsPerEvictionRun" value="3" />
    <property name="minEvictableIdleTimeMillis" value="180000" />
    <property name="poolPreparedStatements" value="true" />
    <property name="maxOpenPreparedStatements" value="25" />
    <property name="accessToUnderlyingConnectionAllowed" value="false" />
    <property name="removeAbandoned" value="false" />
    <property name="removeAbandonedTimeout" value="300" />
    <property name="logAbandoned" value="false" />
</bean>

hibernate.dialect=org.hibernate.dialect.MySQLDialect
hibernate.hbm2ddl.auto=none
hibernate.jdbc.batch_size=100
hibernate.show_sql=false
hibernate.format_sql=false
hibernate.cache.use_second_level_cache=true
hibernate.cache.use_query_cache=false
hibernate.cache.provider_class=org.hibernate.cache.NoCacheProvider
hibernate.current_session_context_class=thread

关注代码：

public String createFilePackage(FilePackage package) {
    String message = "";

    Session session = getSessionFactory().openSession();
    Transaction tx = null;
    try {
        tx = session.beginTransaction();

        // handling package, around 10-14 DB insert, 10 SELECT and 5 update queries on same session

        tx.commit();

    } catch(Exception e) {
        logger.error("file-upload: Exception while adding new font package", e);
        if(tx != null) { tx.rollback(); }
    } finally {
        session.close();
    }
    return message;
}

任何建议如何解决这个问题？

5 个答案:

答案 0 :(得分：14)

在功能完成处理之前，驱动程序与驱动程序尝试连接的数据源之间的通信链接失败。 所以通常是网络错误。这可能是由数据包丢失或配置错误的防火墙/交换机引起的。

答案 1 :(得分：4)

检查您的服务器配置文件/etc/mysql/my.cnf - 验证bind_address未设置为127.0.0.1。将其设置为0.0.0.0或将其注释掉，然后使用以下命令重启服务器：

sudo service mysql restart

答案 2 :(得分：1)

我正在专门针对此错误代码（08s01）。

通常，MySql关闭套接字连接是在MySQL服务器端定义的wait_timeout时间间隔，默认情况下为8小时。因此，如果连接在此时间之后超时并且套接字将抛出SQLState为“ 08s01”的异常。

1。使用连接池执行查询，确保池类具有在超时之前检查连接成员的功能。

2。赋予值大于默认值，但最大值为24天

3。在连接URL中使用另一个参数，但是不建议使用此方法，甚至不建议使用。

答案 3 :(得分：0)

可能是由于TCP协议已关闭。

如何检查/启用： https://dba.stackexchange.com/questions/11377/cannot-connect-to-ms-sql-2008-r2-by-dbvisualizer-native-sspi-library-not-loade/144097#144097

答案 4 :(得分：-3)

连接超时

会发生此错误
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