C3P0+hibernate出现错误！求解释

Java code

 Level: DEBUG   Time: 2011-11-28 19:25:48,805 Method: com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:564)Message: com.mchange.v2.c3p0.impl.NewPooledConnection@1458657 closed by a client.java.lang.Exception: DEBUG -- CLOSE BY CLIENT STACK TRACE    at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:564)    at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:234)    at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.destroyResource(C3P0PooledConnectionPool.java:470)    at com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask.run(BasicResourcePool.java:958)    at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)  Level: DEBUG   Time: 2011-11-28 19:25:48,805 Method: com.mchange.v2.resourcepool.BasicResourcePool.cullExpired(BasicResourcePool.java:1450)Message: FINISHED check for expired resources.  [com.mchange.v2.resourcepool.BasicResourcePool@1bb326c]  Level: DEBUG   Time: 2011-11-28 19:25:48,806 Method: com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.destroyResource(C3P0PooledConnectionPool.java:476)Message: Successfully destroyed PooledConnection: com.mchange.v2.c3p0.impl.NewPooledConnection@1458657  Level: DEBUG   Time: 2011-11-28 19:25:48,806 Method: com.mchange.v2.resourcepool.BasicResourcePool.incrementPendingAcquires(BasicResourcePool.java:400)Message: incremented pending_acquires: 1  Level: DEBUG   Time: 2011-11-28 19:25:48,807 Method: com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask.run(BasicResourcePool.java:961)Message: Successfully destroyed resource: com.mchange.v2.c3p0.impl.NewPooledConnection@1458657  Level: DEBUG   Time: 2011-11-28 19:25:48,829 Method: com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:217)Message: com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager@dd8e0d.acquireResource() returning.   Level: DEBUG   Time: 2011-11-28 19:25:48,830 Method: com.mchange.v2.resourcepool.BasicResourcePool.trace(BasicResourcePool.java:1620)Message: trace com.mchange.v2.resourcepool.BasicResourcePool@1bb326c [managed: 2, unused: 1, excluded: 0] (e.g. com.mchange.v2.c3p0.impl.NewPooledConnection@16d3536)  Level: DEBUG   Time: 2011-11-28 19:25:48,830 Method: com.mchange.v2.resourcepool.BasicResourcePool.decrementPendingAcquires(BasicResourcePool.java:418)Message: decremented pending_acquires: 0

C3P0代码

Java code

    <!-- 定义使用C3P0连接池的数据源 -->    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">        <!-- 指定连接数据库的JDBC驱动 -->        <property name="driverClass">             <value>${driverClassName}</value>         </property>        <!-- 连接数据库所用的URL -->        <property name="jdbcUrl">            <value>${url}</value>        </property>        <!-- 连接数据库的用户名 -->        <property name="user">            <value>${userName}</value>        </property>        <!-- 连接数据库的密码 -->        <property name="password">            <value>${password}</value>        </property>        <!-- 设置数据库连接池的最大连接数 -->        <property name="maxPoolSize">            <value>${maxPoolSize}</value>        </property>        <!-- 设置数据库连接池的最小连接数 -->        <property name="minPoolSize">            <value>${minPoolSize}</value>        </property>        <!-- 设置数据库连接池的初始化连接数 -->        <property name="initialPoolSize">            <value>${initialPoolSize}</value>        </property>        <!-- 设置数据库连接池的连接的最大空闲时间,单位为秒 -->        <property name="maxIdleTime">            <value>${maxIdleTime}</value>        </property>    </bean> 
 

包

mysql-connector-java-5.1.3-rc-bin.jar
c3p0-oracle-thin-extras-0.9.1.2.jar
c3p0-0.9.1.2.jar
c3p0-0.9.1.2-jdk1.3.jar
mysql-connector-java-3.1.13-bin.jar

启动就报这个错误应用程序运行正常但是而且老是循环报此错误 好像是循环调用了这个。 求一解决方案 请不要告诉我设置日志级别 。我是想知道错误是从哪里来的 以前连接ORALCE的时候也没有问题。今天换成mysql就出现此问题
、

[解决办法]
想是包冲突。
[解决办法]
c3p0-oracle-thin-extras-0.9.1.2.jar
c3p0-0.9.1.2-jdk1.3.jar
去掉这两个包试一下