Invocation of method 'getInfoCount' in class java.lang.Class threw exception org.apache.ibatis.exceptions.IbatisException: ### Error opening session. Cause: java.sql.SQLException: Listener refused the connection with the following error: ORA-12519, TNS:no appropriate service handler found The Connection descriptor used by the client was: 180.169.93.145:1521:orcl ### Cause: java.sql.SQLException: Listener refused the connection with the following error: ORA-12519, TNS:no appropriate service handler found The Connection descriptor used by the client was: 180.169.93.145:1521:orcl at gjjlc.sspu.edu.cn/ROOT/WEB-INF/template/463_vm.vm[line 89, column 34]