com.mchange.v2.c3p0.SQLWarnings香格里拉基地去DATOS tiene transacciones

Question

我有一個JSF + Spring + Hibernate的應用。隨着c3p0池v.0.9.1，然後部署它，日誌不斷拋出我SQLWarnings，如下所示，並不知道爲什麼。

的c3po在Spring上下文的配置是：

<bean id="datasource" class="com.mchange.v2.c3p0.ComboPooledDataSource" 
       destroy-method="close"> 
     <property name="driverClass" value="com.informix.jdbc.IfxDriver"/> 
     <property name="jdbcUrl" 
         value="${url}" /> 
     <property name="user" value="${user}" /> 
     <property name="password" value="${password}" /> 
     <property name="initialPoolSize" value="1" /> 
     <property name="maxPoolSize" value="20" /> 
     <property name="idleConnectionTestPeriod" value="150" /> 
     <property name="acquireIncrement" value="1" /> 
     <property name="maxStatements" value="0" /> 
     <property name="numHelperThreads" value="3" /> 
     <property name="maxIdleTime" value="3600" />  
</bean> 

輸出是：

INFO [com.mchange.v2.c3p0.SQLWarnings] La base de datos tiene transacciones 
java.sql.SQLWarning: La base de datos tiene transacciones 
     at com.informix.util.IfxWarnMsg.getSQLWarning(IfxWarnMsg.java:125) 
     at com.informix.util.IfxWarnMsg.getSQLWarning(IfxWarnMsg.java:149) 
     at com.informix.jdbc.IfxSqliConnect.addWarning(IfxSqliConnect.java:1817) 
     at com.informix.jdbc.IfxSqliConnect.setWarnings(IfxSqliConnect.java:3935) 
     at com.informix.jdbc.IfxSqliConnect.OpenDbInit(IfxSqliConnect.java:2591) 
     at com.informix.jdbc.IfxSqliConnect.setDatabaseOpen(IfxSqliConnect.java:2465) 
     at com.informix.jdbc.IfxSqli.callsetDatabaseOpen(IfxSqli.java:2496) 
     at com.informix.jdbc.IfxSqli.executeOpenDatabase(IfxSqli.java:1712) 
     at com.informix.jdbc.IfxSqliConnect.<init>(IfxSqliConnect.java:1242) 
     at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) 
     at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) 
     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) 
     at java.lang.reflect.Constructor.newInstance(Constructor.java:494) 
     at com.informix.jdbc.IfxDriver.connect(IfxDriver.java:243) 
     at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:135) 
     at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182) 
     at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171) 
     at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:137) 
     at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1014) 
     at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32) 
     at com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1810) 
     at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547) 
2015-03-03 14:22:47,748 INFO [com.mchange.v2.c3p0.SQLWarnings] Seleccionada base de datos de Informix Dynamic Server 2000 
java.sql.SQLWarning: Seleccionada base de datos de Informix Dynamic Server 2000 
     at com.informix.util.IfxWarnMsg.getSQLWarning(IfxWarnMsg.java:125) 
     at com.informix.util.IfxWarnMsg.getSQLWarning(IfxWarnMsg.java:149) 
     at com.informix.jdbc.IfxSqliConnect.addWarning(IfxSqliConnect.java:1817) 
     at com.informix.jdbc.IfxSqliConnect.setWarnings(IfxSqliConnect.java:3941) 
     at com.informix.jdbc.IfxSqliConnect.OpenDbInit(IfxSqliConnect.java:2591) 
     at com.informix.jdbc.IfxSqliConnect.setDatabaseOpen(IfxSqliConnect.java:2465) 
     at com.informix.jdbc.IfxSqli.callsetDatabaseOpen(IfxSqli.java:2496) 
     at com.informix.jdbc.IfxSqli.executeOpenDatabase(IfxSqli.java:1712) 
     at com.informix.jdbc.IfxSqliConnect.<init>(IfxSqliConnect.java:1242) 
     at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) 
     at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) 
     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) 
     at java.lang.reflect.Constructor.newInstance(Constructor.java:494) 
     at com.informix.jdbc.IfxDriver.connect(IfxDriver.java:243) 
     at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:135) 
     at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182) 
     at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171) 
     at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:137) 
     at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1014) 
     at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32) 
     at com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1810) 
     at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547) 

Answer 1

請參閱here更全面的解釋。

，如果你想忽略的SQLWarnings快速的解決方法是關閉日誌在日誌記錄配置文件中的記錄com.mchange.v2.c3p0.SQLWarnings。 （不要關閉所有C3P0記錄，只是抑制這種一個記錄器。）

更好的解決辦法是要弄清楚爲什麼你的DBMS/JDBC驅動程序發出這些警告，並解決這個問題。無論您是否使用c3p0，警告都在那裏。只是c3p0主動檢查並記錄它們，這是應用程序很難做的事情。

而且，現在c3p0-0.9.1是一個很老版本使用的庫。我強烈建議您升級到當前版本，c3p0-0.9.5。