java.sql.SQLException: null, message from server: "Host '192.168.16.181' is blocked because of many...

最新推荐文章于 2022-09-07 00:55:51 发布
转载 最新推荐文章于 2022-09-07 00:55:51 发布 · 2.7k 阅读 · 1 ·
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原文链接：http://www.cnblogs.com/darcy-hui/p/11458819.html
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#java #数据库

本文解析了因同一IP短时间内产生过多中断的数据库连接导致的Host is blocked错误，并提供了通过mysqladmin flush-hosts命令解除阻塞的解决方案。

 java.sql.SQLException: null,  message from server: "Host '192.168.16.181' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts'"

出现以上报错的原因：

同一个ip在短时间内产生太多（超过mysql数据库max_connection_errors的最大值）中断的数据库连接而导致的阻塞；

解决办法：

 

转载于:https://www.cnblogs.com/darcy-hui/p/11458819.html

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com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(SQLServerConnection.java:1077) ~[mssql-jdbc-6.4.0.jre8.jar:na] at com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(SQLServerDriver.java:623) ~[mssql-jdbc-6.4.0.jre8.jar:na] at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) ~[HikariCP-3.4.2.jar:na] at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) ~[HikariCP-3.4.2.jar:na] at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202) ~[HikariCP-3.4.2.jar:na] at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:473) [HikariCP-3.4.2.jar:na] at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:554) [HikariCP-3.4.2.jar:na] at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) [HikariCP-3.4.2.jar:na] at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) [HikariCP-3.4.2.jar:na] at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:158) [spring-jdbc-5.2.4.RELEASE.jar:5.2.4.RELEASE] at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:116) [spring-jdbc-5.2.4.RELEASE.jar:5.2.4.RELEASE] at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:79) [spring-jdbc-5.2.4.RELEASE.jar:5.2.4.RELEASE] at org.mybatis.spring.transaction.SpringManagedTransaction.openConnection(SpringManagedTransaction.java:80) [mybatis-spring-2.0.2.jar:2.0.2] at org.mybatis.spring.transaction.SpringManagedTransaction.getConnection(SpringManagedTransaction.java:67) [mybatis-spring-2.0.2.jar:2.0.2] at org.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:336) [mybatis-3.5.2.jar:3.5.2] at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:85) [mybatis-3.5.2.jar:3.5.2] at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:62) [mybatis-3.5.2.jar:3.5.2] at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:324) [mybatis-3.5.2.jar:3.5.2] at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156) [mybatis-3.5.2.jar:3.5.2] at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:109) [mybatis-3.5.2.jar:3.5.2] at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:83) [mybatis-3.5.2.jar:3.5.2] at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:147) [mybatis-3.5.2.jar:3.5.2] at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:140) [mybatis-3.5.2.jar:3.5.2] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_181] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_181] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_181] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_181] at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:426) [mybatis-spring-2.0.2.jar:2.0.2] at com.sun.proxy.$Proxy63.selectList(Unknown Source) [na:na] at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:223) [mybatis-spring-2.0.2.jar:2.0.2] at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:147) [mybatis-3.5.2.jar:3.5.2] at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:80) [mybatis-3.5.2.jar:3.5.2] at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:57) [mybatis-3.5.2.jar:3.5.2] at com.sun.proxy.$Proxy64.getTablexx_flc(Unknown Source) [na:na] at com.nbheyi.hy_menjin.timer.importRsxxTimer.import_hyc_xx(importRsxxTimer.java:64) [classes/:na] at com.nbheyi.hy_menjin.timer.importRsxxTimer.access$100(importRsxxTimer.java:18) [classes/:na] at com.nbheyi.hy_menjin.timer.importRsxxTimer$1.run(importRsxxTimer.java:43) [classes/:na] at java.util.TimerThread.mainLoop(Timer.java:555) [na:1.8.0_181] at java.util.TimerThread.run(Timer.java:505) [na:1.8.0_181] org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is com.microsoft.sqlserver.jdbc.SQLServerException: The TCP/IP connection to the host PC-20160722JXJKSQL2008R2, port 1433 has failed. Error: "PC-20160722JXJKSQL2008R2. Verify the connection properties. Make sure that an instance of SQL Server is running on the host and accepting TCP/IP connections at the port. Make sure that TCP connections to the port are not blocked by a firewall.". ### The error may exist in class path resource [mappers/YiDongMapper.xml] ### The error may involve com.nbheyi.hy_menjin.mapper.mapper4.YiDongMapper.getTablexx_flc ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is com.microsoft.sqlserver.jdbc.SQLServerException: The TCP/IP connection to the host PC-20160722JXJKSQL2008R2, port 1433 has failed. Error: "PC-20160722JXJKSQL2008R2. Verify the connection properties. Make sure that an instance of SQL Server is running on the host and accepting TCP/IP connections at the port. Make sure that TCP connections to the port are not blocked by a firewall.". at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:78) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:440) at com.sun.proxy.$Proxy63.selectList(Unknown Source) at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:223) at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:147) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:80) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:57) at com.sun.proxy.$Proxy64.getTablexx_flc(Unknown Source) at com.nbheyi.hy_menjin.timer.importRsxxTimer.import_hyc_xx(importRsxxTimer.java:64) at com.nbheyi.hy_menjin.timer.importRsxxTimer.access$100(importRsxxTimer.java:18) at com.nbheyi.hy_menjin.timer.importRsxxTimer$1.run(importRsxxTimer.java:43) at java.util.TimerThread.mainLoop(Timer.java:555) at java.util.TimerThread.run(Timer.java:505) Caused by: org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is com.microsoft.sqlserver.jdbc.SQLServerException: The TCP/IP connection to the host PC-20160722JXJKSQL2008R2, port 1433 has failed. Error: "PC-20160722JXJKSQL2008R2. Verify the connection properties. Make sure that an instance of SQL Server is running on the host and accepting TCP/IP connections at the port. Make sure that TCP connections to the port are not blocked by a firewall.". ### The error may exist in class path resource [mappers/YiDongMapper.xml] ### The error may involve com.nbheyi.hy_menjin.mapper.mapper4.YiDongMapper.getTablexx_flc ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is com.microsoft.sqlserver.jdbc.SQLServerException: The TCP/IP connection to the host PC-20160722JXJKSQL2008R2, port 1433 has failed. Error: "PC-20160722JXJKSQL2008R2. Verify the connection properties. Make sure that an instance of SQL Server is running on the host and accepting TCP/IP connections at the port. Make sure that TCP connections to the port are not blocked by a firewall.". at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:149) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:140) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:426) ... 11 more Caused by: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is com.microsoft.sqlserver.jdbc.SQLServerException: The TCP/IP connection to the host PC-20160722JXJKSQL2008R2, port 1433 has failed. Error: "PC-20160722JXJKSQL2008R2. Verify the connection properties. Make sure that an instance of SQL Server is running on the host and accepting TCP/IP connections at the port. Make sure that TCP connections to the port are not blocked by a firewall.". at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:82) at org.mybatis.spring.transaction.SpringManagedTransaction.openConnection(SpringManagedTransaction.java:80) at org.mybatis.spring.transaction.SpringManagedTransaction.getConnection(SpringManagedTransaction.java:67) at org.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:336) at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:85) at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:62) at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:324) at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:109) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:83) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:147) ... 17 more Caused by: com.microsoft.sqlserver.jdbc.SQLServerException: The TCP/IP connection to the host PC-20160722JXJKSQL2008R2, port 1433 has failed. Error: "PC-20160722JXJKSQL2008R2. Verify the connection properties. Make sure that an instance of SQL Server is running on the host and accepting TCP/IP connections at the port. Make sure that TCP connections to the port are not blocked by a firewall.". at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDriverError(SQLServerException.java:228) at com.microsoft.sqlserver.jdbc.SQLServerException.ConvertConnectExceptionToSQLServerException(SQLServerException.java:285) at com.microsoft.sqlserver.jdbc.SocketFinder.findSocket(IOBuffer.java:2437) at com.microsoft.sqlserver.jdbc.TDSChannel.open(IOBuffer.java:641) at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper(SQLServerConnection.java:2245) at com.microsoft.sqlserver.jdbc.SQLServerConnection.login(SQLServerConnection.java:1921) at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectInternal(SQLServerConnection.java:1762) at com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(SQLServerConnection.java:1077) at com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(SQLServerDriver.java:623) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:354) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:202)
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