Listener.ora、tnsnames.ora這兩個文件常常因為格式問題而不好用，我平時都是配置好了留個備份，以后都是拷貝過去改改就好了！嘿嘿~~~

??? 因為平時使用linux的時候較多，所以有時還會遇到sqlnet.ora這個文件有問題，直接給它刪了就好了~~

??? 有時在windows下裝的oracle的listener服務就啟動不了，遇到這種情況，直接去oracle的bin目錄下面找到lsnrctl.exe那個文件，直接給它運行，彈出來的窗口不要關閉，就可以了。

????Oracle?Server端Listener.ora文件(一個instance)：

??? LISTENER =
????? (DESCRIPTION_LIST =
??????? (DESCRIPTION =
????????? (ADDRESS_LIST =
??????????? (ADDRESS = (PROTOCOL=TCP)(HOST=hostname)(PORT=1521))??? //主機名或IP及端口設置
????????? )
??????? )
????? )

??? SID_LIST_LISTENER =
????? (SID_LIST =
??????? (SID_DESC =
????????? (SID_NAME = database1)???????????? // database1為數據庫instance名
????????? (ORACLE_HOME = /opt/oracle/product/10.1.0)?????????????????? //oracle安裝目錄，根據安裝情況更改
????????? (PROGRAM = extproc)
??????? )
????? )

????Oracle?Server端Listener.ora文件(兩個instance)：
??? LISTENER =
????? (DESCRIPTION_LIST =
??????? (DESCRIPTION =
????????? (ADDRESS_LIST =
??????????? (ADDRESS = (PROTOCOL=TCP)(HOST=hostname)(PORT=1521))
????????? )
??????? )
????? )
??? SID_LIST_LISTENER =
????? (SID_LIST =
??????? (SID_DESC =
????????? (SID_NAME = database1)???????????? // database1為數據庫instance1名
????????? (ORACLE_HOME = /opt/oracle/product/10.1.0)
????????? (PROGRAM = extproc)
??????? )
??????? (SID_DESC =
????????? (SID_NAME = database2)???????????? // database2為數據庫instance2名
????????? (ORACLE_HOME = /opt/oracle/product/10.1.0)
????????? (PROGRAM = extproc)
??????? )
????? )

??? Oracle Server端監聽器啟動、停止、查看狀態命令：

??? $ lsnrctl start

??? $ lsnrctl stop

??? $ lsnrctl status

??? Oracle Client端Tnsnames.ora文件：

??? ORALOCAL =??????????????????????????????????????????????????????????? //別名oralocal
????? (DESCRIPTION =
??????? (ADDRESS_LIST =
????????? (ADDRESS = (PROTOCOL = TCP)(HOST = hostname)(PORT = 1521))
??????? )
??????? (CONNECT_DATA =
????????? (SERVICE_NAME = database1)???????????? //database1為SID名
??????? )
??? )

??? Oracle Client端檢查監聽器連接狀態用命令：

??? $ tnsping 別名

??? 例如：用oracle用戶執行命令? $ tnsping oralocal

轉載于:https://www.cnblogs.com/top5/archive/2009/09/21/1571028.html

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