我们使用 c3p0 作为数据库池的 spring，我们使用 oracle 10g 作为数据库。当我们启动应用程序时，它继续显示以下错误
2012-5-7 13:12:43 com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask run
Warning: Failed to destroy resource: com.mchange.v2.c3p0.impl.NewPooledConnection@20af46
java.sql.SQLException: Some resources failed to close properly while closing com.mchange.v2.c3p0.impl.NewPooledConnection@20af46
2012-5-7 14:45:51 com.mchange.v2.c3p0.impl.NewPooledConnection logCloseExceptions
Info: [c3p0] Exceptions occurred while trying to close a PooledConnection's resources normally.
2012-5-7 14:45:51 com.mchange.v2.c3p0.impl.NewPooledConnection logCloseExceptions
Info: [c3p0] NewPooledConnection close Exception.
java.sql.SQLException: More data can not be read from the socket
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:146)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:208)
at oracle.jdbc.driver.T4CMAREngine.unmarshalUB1(T4CMAREngine.java:1123)
at oracle.jdbc.driver.T4CMAREngine.unmarshalSB1(T4CMAREngine.java:1075)
at oracle.jdbc.driver.T4C7Ocommoncall.receive(T4C7Ocommoncall.java:106)
at oracle.jdbc.driver.T4CConnection.logoff(T4CConnection.java:465)
at oracle.jdbc.driver.PhysicalConnection.close(PhysicalConnection.java:1203)
at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:549)
at com.mchange.v2.c3p0.impl.NewPooledConnection.close(NewPooledConnection.java:234)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.destroyResource(C3P0PooledConnectionPool.java
at com.mchange.v2.resourcepool.BasicResourcePool$1DestroyResourceTask.run(BasicResourcePool.java:964)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)
In oracle trace file,we found the following error
*** 2012-05-07 11:50:56.421
ksedmp: internal or fatal error
ORA-07445: An unexpected error: core dump [ACCESS_VIOLATION] [_evaopn2+153] [PC:0x1BBDFA9] [ADDR:0x0] [UNABLE_TO_READ] []
Current SQL statement for this session:
是oracle错误导致上述原因吗？我们花了很多时间才发现问题，但我们没有发现问题。之前我们使用oracle 9i，它没有问题。最近我们升级到oracle 10g。哪里会出现问题？任何想法都会非常有帮助。谢谢！我们使用的 c3p0 是 com.springsource.com.mchange.v2.c3p0-0.9.1.2.jar。