解決 ERROR - ORA-12514: TNS: 監聽程序當前無法識別連接描述符中請求的服務

服務器莫名其妙的報這個錯，之前一直正常，從google獲取解決方案，解決之，記錄如下：

 1. Open the ""<OracleHome>/network/admin/listener.ora" file in the host,and you will see:
   SID_LIST_LISTENER =
   (SID_LIST =
     (SID_DESC =
       (SID_NAME = PLSExtProc)
       (ORACLE_HOME = D:\oracle\product\10.2.0\db_1)
       (PROGRAM = extproc)
     )
   )
  2. Add the following lines after the 7th line in the above 
            (SID_DESC =
       (GLOBAL_DBNAME = ORACLE)
       (ORACLE_HOME = D:\oracle\product\10.2.0\db_1)   
       (SID_NAME = ORACLE)
      )
  3. At last the content of the file become to the following section:
 SID_LIST_LISTENER =
   (SID_LIST =
     (SID_DESC =
       (SID_NAME = PLSExtProc)
       (ORACLE_HOME = D:\oracle\product\10.2.0\db_1)
       (PROGRAM = extproc)
     )
     (SID_DESC =
       (GLOBAL_DBNAME = ORACLE)
       (ORACLE_HOME = D:\oracle\product\10.2.0\db_1)   
       (SID_NAME = ORACLE)
      )
   )
  4. Save the file and restart the TNSListener service in the host. That's OK!