客戶端連接oracle數(shù)據(jù)庫時(shí)出現(xiàn)如下錯(cuò)誤：

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

首先看看Oracle服務(wù)是否開啟：

然后找到listener.ora監(jiān)聽文件，具體位置：D:\app\Administrator\product\11.2.0\dbhome_1\NETWORK\ADMIN\listener.ora

即：$ORACLE_HOME/network/admin

原監(jiān)聽文件lisener.ora配置如下：

# 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

修改為

紅色部分為添加內(nèi)容，藍(lán)色可修改為服務(wù)器的IP地址

注意：空格也要嚴(yán)格按照要求，否則會(huì)報(bào)語法錯(cuò)誤

# 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

停止監(jiān)聽服務(wù)：

C:\Users\Administrator>lsnrctl stop

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.正在連接到 (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521))) 命令執(zhí)行成功

啟動(dòng)監(jiān)聽服務(wù)：

C:\Users\Administrator>lsnrctl start

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.啟動(dòng)tnslsnr: 請(qǐng)稍候...TNSLSNR for 64-bit Windows: Version 11.2.0.1.0 - Production 系統(tǒng)參數(shù)文件為D:\app\Administrator\product\11.2.0\dbhome_1\network\admin\listene r.ora 寫入d:\app\administrator\diag\tnslsnr\WIN-VATV98IF527\listener\alert\log.xml的日 志信息 監(jiān)聽: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1521ipc))) 監(jiān)聽: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=WIN-VATV98IF527)(PORT=1521)))正在連接到 (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521))) LISTENER 的 STATUS ------------------------ 別名 LISTENER 版本 TNSLSNR for 64-bit Windows: Version 11.2.0.1.0 - Produ ction 啟動(dòng)日期 11-8月 -2019 16:05:43 正常運(yùn)行時(shí)間 0 天 0 小時(shí) 0 分 3 秒 跟蹤級(jí)別 off 安全性 ON: Local OS Authentication SNMP OFF 監(jiān)聽程序參數(shù)文件 D:\app\Administrator\product\11.2.0\dbhome_1\network\a dmin\listener.ora 監(jiān)聽程序日志文件 d:\app\administrator\diag\tnslsnr\WIN-VATV98IF527\list ener\alert\log.xml 監(jiān)聽端點(diǎn)概要...(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1521ipc)))(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=WIN-VATV98IF527)(PORT=1521))) 服務(wù)摘要.. 服務(wù) "CLRExtProc" 包含 1 個(gè)實(shí)例。實(shí)例 "CLRExtProc", 狀態(tài) UNKNOWN, 包含此服務(wù)的 1 個(gè)處理程序... 服務(wù) "ORCL" 包含 1 個(gè)實(shí)例。實(shí)例 "ORCL", 狀態(tài) UNKNOWN, 包含此服務(wù)的 1 個(gè)處理程序... 命令執(zhí)行成功

參考博客：

Oracle 11g ORA-12514:TNS:監(jiān)聽程序當(dāng)前無法識(shí)別連接描述符中請(qǐng)求的服務(wù)

https://blog.csdn.net/zl570932980/article/details/77864157

轉(zhuǎn)載于:https://www.cnblogs.com/djlsunshine/p/11335327.html

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