解決orcale資料庫 無法使用sql devepoler連線的問題，參考了很多網上的教程發現好像都不太匹配，無法解決我的問題，參考的很多就不帶參考文獻了。

這個情況適用本教程前提：通過 sql plus是可以正常登入，所有相關服務均以啟動

當時安裝時是可以正常使用，今天突然無法使用，
連線時報出錯誤資訊： 狀態: 失敗 -測試失敗: Listener refused the connection with the following error:ORA-12505, TNS:listener does not currently know of SID given in connect descriptor

配置檔案(初始的listener.ora檔案內容)

# listener.ora Network Configuration File: F:\Orcale\product\12.1.0\dbhome_1\network\admin\listener.ora
# Generated by Oracle configuration tools.

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = CLRExtProc)
      (ORACLE_HOME = F:\Orcale\product\12.1.0\dbhome_1)
      (PROGRAM = extproc)
      (ENVS = "EXTPROC_DLLS=ONLY:F:\Orcale\product\12.1.0\dbhome_1\bin\oraclr12.dll")
    )
	 )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = DESKTOP-Q0VMUMT)(PORT = 1521))
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
    )
  )
 

下面開始在listener.ora內容做文章(新增一些配置內容)：

# listener.ora Network Configuration File: F:\Orcale\product\12.1.0\dbhome_1\network\admin\listener.ora
# Generated by Oracle configuration tools.

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = CLRExtProc)
      (ORACLE_HOME = F:\Orcale\product\12.1.0\dbhome_1)
      (PROGRAM = extproc)
      (ENVS = "EXTPROC_DLLS=ONLY:F:\Orcale\product\12.1.0\dbhome_1\bin\oraclr12.dll")
    )
 

(SID_DESC = 
          (GLOBAL_DBNAME = orcl) 
         (ORACLE_HOME = F:\Orcale\product\12.1.0\dbhome_1) 
       (SID_NAME = orcl) 
  )


  )
LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = DESKTOP-Q0VMUMT)(PORT = 1521))
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
    )
  )
 

修改儲存後可以重啟一下服務（我沒有重啟），直接測試連線 ok了。