1.Python代码 import cx_Oracle tns=cx_Oracle.makedsn('127.0.0.1','1521','mytest') db=cx_Oracle.connect('system','123456',tns) print('成功连接上oracle数据库') db.close(); 2.报错信息及解决 错误1：cx_Oracle.DatabaseError: DPI-1047: Cannot locate a 64-bit Oracle Client libr