ORA-12560: TNS: 协议适配器错误解决办法

遇到ORA-12560: TNS: 协议适配器错误这样的问题：

解决方法：

product11.2.0dbhome_1NETWORKADMINlistener.ora
SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = C:appAdministratorproduct11.2.0dbhome_1)
      (PROGRAM = extproc)
    )
    (SID_DESC =
      (GLOBAL_DBNAME = tztorcl)
      (ORACLE_HOME = C:appAdministratorproduct11.2.0dbhome_1)
      (SID_NAME = orcl)
    )
  )
 
LISTENER =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 10.251.9.112)(PORT = 1521))
     )