当前位置: 首页 > 工具软件 > BoneCP > 使用案例 >

bonecp mysql_Java BoneCP MySQL连接超时

冉永宁
2023-12-01

我有一个应用程序设置来与BoneCP池连接

mysql.目前,该应用程序没有得到大量使用,因此不经常使用连接.经过一段时间后,查询一旦工作,开始失败,我收到类似这样的消息:

com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

The last packet successfully received from the server was 2,618,063 milliseconds ago. The last packet sent successfully to the server was 44,734 milliseconds ago.

at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)

at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)

at java.lang.reflect.Constructor.newInstance(Unknown Source)

at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)

at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1117)

at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3567)

at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3456)

at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3997)

at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2468)

at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2629)

at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2719)

at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2155)

at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:1379)

at com.jolbox.bonecp.PreparedStatementHandle.execute(PreparedStatementHandle.java:138)

我正在设置BoneCP,如下所示:

BoneCPConfig config = new BoneCPConfig();

config.setJdbcUrl("jdbc:mysql://" + hostname + "/" + database);

config.setUsername(username);

config.setPassword(password);

config.setMinConnectionsPerPartition(minPoolSize);

config.setMaxConnectionsPerPartition(maxPoolSize);

config.setIdleConnectionTestPeriodInMinutes(60);

config.setIdleMaxAgeInMinutes(240);

config.setPartitionCount(1);

connectionPool = new BoneCP(config);

我不确定如何找出mysql服务器的超时(它没有从默认设置中更改),但是在没有连接池活动大约5或10分钟后我得到这个错误,这似乎非常短.

 类似资料: