Plsql Developer连接Oracle时出现：ORA-12514: TNS: 监听程序当前无法识别连接描述符中请求的服务解决

使用 plsql Developer 连接数据库出现下面问题：

 

解决方式：

  1， 找到安装oracle  目录下   dbhome---->NETWORK---->ADMIN---->listener.ora文件

  D:\java\oracle\dbhome\NETWORK\ADMIN

2，查看文件：listener.ora文件：  源文件如下

# listener.ora Network Configuration File: D:\java\oracle\dbhome\NETWORK\ADMIN\listener.ora
# Generated by Oracle configuration tools.

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = CLRExtProc)
      (ORACLE_HOME = D:\java\oracle\dbhome)
      (PROGRAM = extproc)
      (ENVS = "EXTPROC_DLLS=ONLY:D:\java\oracle\dbhome\bin\oraclr11.dll")
    )
  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
    )
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = PC-20181111BJKV)(PORT = 1521))
    )
  )

ADR_BASE_LISTENER = D:\java\oracle\product

3，修改文件：listener.ora文件：

# listener.ora Network Configuration File: D:\java\oracle\dbhome\NETWORK\ADMIN\listener.ora
# Generated by Oracle configuration tools.

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = ORCL)
      (ORACLE_HOME = D:\java\oracle\dbhome)
      (PROGRAM = extproc)
      (ENVS = "EXTPROC_DLLS=ONLY:D:\java\oracle\dbhome\bin\oraclr11.dll")
    )
	(SID_DESC = 
		(GLOBAL_DBNAME = ORCL) 
		(ORACLE_HOME = D:\java\oracle\dbhome) 
		(SID_NAME = ORCL) 
	) 
  )
   

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
    )
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = PC-20181111BJKV)(PORT = 1521))
    )
  )

ADR_BASE_LISTENER = D:\java\oracle\product

 

4：总结：

  其实就是加入小段配置：

(SID_DESC = 
		(GLOBAL_DBNAME = ORCL) 
		(ORACLE_HOME = D:\java\oracle\dbhome) 
		(SID_NAME = ORCL) 
	) 

 

完美 问题解决：可以连接了~