本地ORACLE报ORA-12514: TNS:监听程序当前无法识别请求服务

写在前面：本博客只是用来日常记录报错改正，只适用于装在本地的Oracle测试库，由于以下操作涉及数据库重启，监听重启，不建议生产库操作，如为正式生产库请绕行

该报错是由于Oracle数据库网络变动，或者其他系统原因造成自动重启的监听和数据库出现问题，可以通过重启监听来解决

1. lsnrctl stop
2. lsnrctl start

如仍无法解决

可通过采用数据库重启来解决

1. sqlplus / as sysdba
2. shutdown immediate
3. startup

另附监听和数据库配置文件，以供后续参考

• tnsname.ora

# tnsnames.ora Network Configuration File: E:\app\Mochou\product\11.2.0\dbhome_1\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.

LISTENER_ORCL =
  (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))


ORACLR_CONNECTION_DATA =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
    )
    (CONNECT_DATA =
      (SID = CLRExtProc)
      (PRESENTATION = RO)
    )
  )

ORCL =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
    (CONNECT_DATA =
	# 在公司网络就把#去掉，连接的vpn就加上，需重启数据库#
    #  (SERVER = SHARED)
      (SERVICE_NAME = orcl)
    )
  )

• listener.ora

# listener.ora Network Configuration File: E:\app\Mochou\product\11.2.0\dbhome_1\network\admin\listener.ora
# Generated by Oracle configuration tools.

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = ORCL)
      (ORACLE_HOME = E:\app\Mochou\product\11.2.0\dbhome_1)
	  # next add #
      #(PROGRAM = extproc)
      (ENVS = "EXTPROC_DLLS=ONLY:E:\app\Mochou\product\11.2.0\dbhome_1\bin\oraclr11.dll")
    )
  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
    )
  )

ADR_BASE_LISTENER = E:\app\Mochou

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