這是我的代碼，查詢進入無限循環(huán)，沒有任何錯誤或異常import cx_Oracleip=''port=''sid=''dns_tns=cx_Oracle.makedsn(ip,port,sid)con = cx_Oracle.connect('username','password',str(dns_tns))cursor = con.cursor()print("start")B={'APP_NAME': 'Hello', 'ISSUE_NAME': 'SP_164', 'ISSUE_TYPE': 'CR', 'DEVELOPER': 'username','TESTER': '','RELEASE_NO': '4.0', 'EST_DATE': '2018-10-10', 'ACT_DATE': '2018-10-10',\  'DETECTED_PHASE': '',  'ISSUE_TRACKING_TOOL': 'SHAREPOINT','ID': 11}sql_update = "UPDATE ISSUE SET ISSUE_TRACKING_TOOL = :ISSUE_TRACKING_TOOL,APP_NAME = :APP_NAME,\RELEASE_NO = :RELEASE_NO,ISSUE_TYPE = :ISSUE_TYPE,DEVELOPER = :DEVELOPER,TESTER = :TESTER,\ISSUE_NAME = :ISSUE_NAME,DETECTED_PHASE = :DETECTED_PHASE ,EST_DATE = TO_DATE(:EST_DATE, 'YYYY/MM/DD') \,ACT_DATE = TO_DATE(:ACT_DATE, 'YYYY/MM/DD') WHERE ID = :ID"cursor.execute(sql_update,B)print("done")con.commit()con.close()