Oracle 12505錯誤：listener does not currently know...

解決辦法：首先查看一下listener是否啓動，開啓cmd，輸入命令 app

Lsnrctl，以下字體

輸入status，查看狀態
spa

咱們看到沒有orcl實例，須要到listener.org中配置信息圖片

D:\app\Administrator\product\11.2.0\dbhome_1\NETWORK\ADMIN ci

找到listenr.org，用記事本打開 cmd

#listener.oraNetworkConfiguration io

File: D:\app\Administrator\product\11.2.0\dbhome_1\network\admin\listener.ora table

# Generated by Oracle configuration tools. class

SID_LIST_LISTENER = 配置

(SID_LIST =

(SID_DESC =

(SID_NAME = CLRExtProc)

(ORACLE_HOME = D:\app\Administrator\product\11.2.0\dbhome_1)

(PROGRAM = extproc)

(ENVS = "EXTPROC_DLLS=ONLY:D:\app\Administrator\product\11.2.0\dbhome_1\bin\oraclr11.dll")

)

(SID_DESC =

(GLOBAL_DBNAME = orcl)

(ORACLE_HOME = D:\app\Administrator\product\11.2.0\dbhome_1)

(SID_NAME = orcl)

)

LISTENER =

(DESCRIPTION_LIST =

(DESCRIPTION =

(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))

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

)

ADR_BASE_LISTENER = D:\app\Administrator

紅色字體爲增長的實例內容。

這時再重啓一下監聽器，在cmd中輸入reload便可。

這時看到orcl實例，這時再在Oracle SQL Developer中鏈接就能夠了。