Oracle數據庫在一臺機器配置兩個listener

問題：一臺機器同時裝兩套數據庫時（實例名o8161,o8151)，無法同時啟動兩個listener，當啟動第二個listener時，顯示錯誤。

　　$ lsnrctl start

　　LSNRCTL for IBM/AIX RISC System/6000: Version 8.1.5.0.0 - Production on 14-SEP-00 09:25:17

　　(c) Copyright 1998 Oracle Corporation. All rights reserved.

　　TNS-01106: Listener using listener name LISTENER has already been started

　　$ oerr tns 1106
　　01106, 00000, "Listener using listener name %s has already been started"
　　// *Cause: Another listener is already listening on one of the ADDRESSes
　　// specified.
　　// *Action: Shutdown the previous listener specified by the listener name
　　// before starting this one.

　　問題產生原因：
　　兩個實例的LISTENER.ORA中IPC協議的KEY是相同，而一個系統中KEY必須是唯一的.

　　解決辦法：
　　修改key的值即可。修改后的文件信息：

　　o8161實例：（沒有修改)

　　# LISTENER.ORA Configuration File:/oracle/dbs/opstemp/szpcac1.network/admin/listener.ora
　　# Generated by Oracle configuration tools.

　　LISTENER =
　　(DESCRIPTION_LIST =
　　(DESCRIPTION =
　　(ADDRESS_LIST =
　　(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))
　　)
　　(ADDRESS_LIST =
　　(ADDRESS = (PROTOCOL = TCP)(HOST = loopback)(PORT = 1521))
　　)
　　)
　　(DESCRIPTION =
　　(PROTOCOL_STACK =
　　(PRESENTATION = GIOP)
　　(SESSION = RAW)
　　)
　　(ADDRESS = (PROTOCOL = TCP)(HOST = loopback)(PORT = 2481))
　　)
　　)

　　SID_LIST_LISTENER =
　　(SID_LIST =
　　(SID_DESC =
　　(SID_NAME = PLSExtProc)
　　(ORACLE_HOME = /oracle)
　　(PROGRAM = extproc)
　　)
　　(SID_DESC =
　　(ORACLE_HOME = /oracle)
　　(SID_NAME = o8161)
　　)
　　)

　　08151實例：（經過修改)

　　# LISTENER.ORA Configuration File:/ora815/network/admin/listener.ora
　　# Generated by Oracle Net8 Assistant

　　LISTENER =
　　(DESCRIPTION_LIST =
　　(DESCRIPTION =
　　(ADDRESS_LIST =
　　(ADDRESS = (PROTOCOL = IPC)(KEY = TESTo815))
　　)
　　(ADDRESS_LIST =
　　(ADDRESS = (PROTOCOL = TCP)(HOST = loopback)(PORT = 1526))
　　)
　　)
　　)

　　SID_LIST_LISTENER =
　　(SID_LIST =
　　(SID_DESC =
　　(SID_NAME = ora8151)
　　(ORACLE_HOME = /ora815)
　　(PROGRAM = extproc)
　　)
　　)

　　

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