Listener refused the connection with the following error:
ORA-12514, TNS:listener does not currently know of service requested in connect descriptor

# listener.ora Network Configuration File: D:\app\Administrator\product\11.2.0\dbhome_1\network\admin\listener.ora
# Generated by Oracle configuration tools.SID_LIST_LISTENER =(SID_LIST =(SID_DESC =(SID_NAME = CLRExtProc)(ORACLE_HOME = D:\app\Administrator\product\11.2.0\dbhome_1)(PROGRAM = extproc)(ENVS = "EXTPROC_DLLS=ONLY:D:\app\Administrator\product\11.2.0\dbhome_1\bin\oraclr11.dll")))LISTENER =(DESCRIPTION_LIST =(DESCRIPTION =(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))(ADDRESS = (PROTOCOL = TCP)(HOST = WIN-VATV98IF527)(PORT = 1521))))ADR_BASE_LISTENER = D:\app\Administrator

# listener.ora Network Configuration File: D:\app\Administrator\product\11.2.0\dbhome_1\network\admin\listener.ora
# Generated by Oracle configuration tools.SID_LIST_LISTENER =(SID_LIST =(SID_DESC =(SID_NAME = CLRExtProc)(ORACLE_HOME = D:\app\Administrator\product\11.2.0\dbhome_1)(PROGRAM = extproc)(ENVS = "EXTPROC_DLLS=ONLY:D:\app\Administrator\product\11.2.0\dbhome_1\bin\oraclr11.dll"))  (SID_DESC =(GLOBAL_DBNAME = ORCL)(ORACLE_HOME = D:\app\Administrator\product\11.2.0\dbhome_1)(SID_NAME = ORCL)))LISTENER =(DESCRIPTION_LIST =(DESCRIPTION =(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))(ADDRESS = (PROTOCOL = TCP)(HOST = WIN-VATV98IF527)(PORT = 1521))))ADR_BASE_LISTENER = D:\app\Administrator

C:\Users\Administrator>lsnrctl stopLSNRCTL for 64-bit Windows: Version 11.2.0.1.0 - Production on 11-8月 -2019 16:0
5:36Copyright (c) 1991, 2010, Oracle.  All rights reserved.正在连接到 (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
命令执行成功

C:\Users\Administrator>lsnrctl startLSNRCTL for 64-bit Windows: Version 11.2.0.1.0 - Production on 11-8月 -2019 16:0
5:40Copyright (c) 1991, 2010, Oracle.  All rights reserved.启动tnslsnr: 请稍候...TNSLSNR for 64-bit Windows: Version 11.2.0.1.0 - Production
系统参数文件为D:\app\Administrator\product\11.2.0\dbhome_1\network\admin\listene
r.ora
写入d:\app\administrator\diag\tnslsnr\WIN-VATV98IF527\listener\alert\log.xml的日
志信息
监听: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1521ipc)))
监听: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=WIN-VATV98IF527)(PORT=1521)))正在连接到 (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
LISTENER 的 STATUS
------------------------
别名                      LISTENER
版本                      TNSLSNR for 64-bit Windows: Version 11.2.0.1.0 - Produ
ction
启动日期                  11-8月 -2019 16:05:43
正常运行时间              0 天 0 小时 0 分 3 秒
跟踪级别                  off
安全性                    ON: Local OS Authentication
SNMP                      OFF
监听程序参数文件          D:\app\Administrator\product\11.2.0\dbhome_1\network\a
dmin\listener.ora
监听程序日志文件          d:\app\administrator\diag\tnslsnr\WIN-VATV98IF527\list
ener\alert\log.xml
监听端点概要...(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1521ipc)))(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=WIN-VATV98IF527)(PORT=1521)))
服务摘要..
服务 "CLRExtProc" 包含 1 个实例。实例 "CLRExtProc", 状态 UNKNOWN, 包含此服务的 1 个处理程序...
服务 "ORCL" 包含 1 个实例。实例 "ORCL", 状态 UNKNOWN, 包含此服务的 1 个处理程序...
命令执行成功