Could not obtain connection metadata

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用hibernate连接数据库出现错误
009 - 09 - 27   17 : 38 : 15 , 093 [main] WARN [org.hibernate.cfg.SettingsFactory] - Could not obtain connection metadata
java.sql.SQLException: 不支持的特性
    at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134 )
    at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:179 )
    at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:269 )
    at oracle.jdbc.dbaccess.DBError.throwUnsupportedFeatureSqlException(DBError.java:689 )
    at oracle.jdbc.OracleDatabaseMetaData.supportsGetGeneratedKeys(OracleDatabaseMetaData.java:4180 )
    at com.mchange.v2.c3p0.impl.NewProxyDatabaseMetaData.supportsGetGeneratedKeys(NewProxyDatabaseMetaData.java:3578 )
.

找了一下，原来是我的jar包有问题，我还是使用原来oracle9i的classes12.jar，下了一个最新的叫ojdbc14.jar。试了一下 OK

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