Question

在我的项目部署几次之后，我得到了这个日志，它只是暂停了。之后我必须重新运行我的项目。我怎样才能解决这个问题并在将来预防？

Info:   Initializing c3p0-0.9.2-pre2 [built 18-May-2012 10:14:10 -0400; debug? true; trace: 10]

Warning:   A C3P0Registry mbean is already registered. This probably means that an application using c3p0 was undeployed, but not all PooledDataSources were closed prior to undeployment. This may lead to resource leaks over time. Please take care to close all PooledDataSources.

Info:   Initializing c3p0 pool... com.mchange.v2.c3p0.PoolBackedDataSource@f63e045c [ connectionPoolDataSource -> com.mchange.v2.c3p0.WrapperConnectionPoolDataSource@7aab8919 [ acquireIncrement -> 3, acquireRetryAttempts -> 30, acquireRetryDelay -> 1000, autoCommitOnClose -> false, automaticTestTable -> null, breakAfterAcquireFailure -> false, checkoutTimeout -> 0, connectionCustomizerClassName -> null, connectionTesterClassName -> com.mchange.v2.c3p0.impl.DefaultConnectionTester, debugUnreturnedConnectionStackTraces -> false, factoryClassLocation -> null, forceIgnoreUnresolvedTransactions -> false, identityToken -> 1hge13c9f3qzb1d180wvxe|f1928e0, idleConnectionTestPeriod -> 0, initialPoolSize -> 1, maxAdministrativeTaskTime -> 0, maxConnectionAge -> 0, maxIdleTime -> 0, maxIdleTimeExcessConnections -> 0, maxPoolSize -> 100, maxStatements -> 0, maxStatementsPerConnection -> 0, minPoolSize -> 1, nestedDataSource -> com.mchange.v2.c3p0.DriverManagerDataSource@3a5a11 [ description -> null, driverClass -> null, factoryClassLocation -> null, identityToken -> 1hge13c9f3qzb1d180wvxe|1311a587, jdbcUrl -> jdbc:mysql://192.168.1.13:3306/medi_soft?autoReconnect=true, properties -> {user=******, password=******} ], preferredTestQuery -> null, propertyCycle -> 0, statementCacheNumDeferredCloseThreads -> 0, testConnectionOnCheckin -> false, testConnectionOnCheckout -> false, unreturnedConnectionTimeout -> 0, usesTraditionalReflectiveProxies -> false; userOverrides: {} ], dataSourceName -> null, factoryClassLocation -> null, identityToken -> 1hge13c9f3qzb1d180wvxe|79fef582, numHelperThreads -> 3 ]



    <!-- c3p0 Connection Pool Properties -->
    <property name="hibernate.connection.pool_size">1</property>
    <property name="hibernate.c3p0.min_size">1</property>
    <property name="hibernate.c3p0.max_size">100</property> 
    <property name="hibernate.c3p0.timeout">0</property>
    <property name="hibernate.c3p0.max_statements">0</property>
    <property name="hibernate.c3p0.idle_test_period">0</property>

Answer 1

从信息日志中，您似乎正在使用JMX server / JMX MBeanServer。使用与JDK捆绑在一起的JMX工具（如Jconsole）来编辑数据源的配置属性。您会发现c3p0在域com.mchange.v2.c3p0下注册了MBean，并为您部署的每个PooledDataSource注册了MBean。

如果未明确设置RegistryName，则完整的JMX ObjectName将为

com.mchange.v2.c3p0：类型= C3P0Registry

以上值是默认值，hibernate / application正在尝试使用相同的注册表bean初始化c3p0（默认）。

请在配置/属性文件中设置注册表。例如： - com.mchange.v2.c3p0：type = C3P0Registry，name = C3P0Registrynew

如果上述解决方案无效，请禁用JMX支持。禁用JMX支持的系统属性是： -

com.mchange.v2.c3p0.management.ManagementCoordinator = com.mchange.v2.c3p0.management.NullManagementCoordinator

Hibernate c3p0初始化错误

1 个答案: