Ibatis QueryForList查询Oracle dblink报错 求大神围观

2014-12-04 15:26:10,000 DEBUG [com.mchange.v2.c3p0.impl.NewPooledConnection] - A Throwable occurred while trying to reset the readOnly property of our Connection to false!
java.sql.SQLException: ORA-01453: SET TRANSACTION 必须是事务处理的第一个语句
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:125)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:305)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:272)
at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:623)
at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:181)
at oracle.jdbc.driver.T4CPreparedStatement.execute_for_rows(T4CPreparedStatement.java:543)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1027)
at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:2885)
at oracle.jdbc.driver.OraclePreparedStatement.execute(OraclePreparedStatement.java:2976)
at oracle.jdbc.driver.PhysicalConnection.setReadOnly(PhysicalConnection.java:1340)
at com.mchange.v2.c3p0.impl.NewPooledConnection.reset(NewPooledConnection.java:282)
at com.mchange.v2.c3p0.impl.NewPooledConnection.markClosedProxyConnection(NewPooledConnection.java:247)
at com.mchange.v2.c3p0.impl.NewProxyConnection.close(NewProxyConnection.java:1148)