C3P0+hibernate出现错误！求解释


 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$1PooledConnectionResourcePoolManager@dd8e0d.acquireResource() returning.   Level: DEBUG
   Time: 2011-11-28 19:25:48,830
 Method: com.mchange.v2.resourcepool.BasicResourcePool.trace(BasicResourcePool.java:1620)
Message: trace com.mchange.v2.resourcepool.BasicResourcePool@1bb326c [managed: 2, unused: 1, excluded: 0] (e.g. com.mchange.v2.c3p0.impl.NewPooledConnection@16d3536)  Level: DEBUG
   Time: 2011-11-28 19:25:48,830
 Method: com.mchange.v2.resourcepool.BasicResourcePool.decrementPendingAcquires(BasicResourcePool.java:418)
Message: decremented pending_acquires: 0C3P0代码
<!-- 定义使用C3P0连接池的数据源 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
<!-- 指定连接数据库的JDBC驱动 -->
<property name="driverClass">
  <value>${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
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