来历：网海拾贝
功效：一台凝滞同古装两套数据库时（实例名o8161,o8151)，无法同时启动两个listener，
当启动第二个listener时，显露显露错误。
$ 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.
功效迸发缘由：
两个实例的LISTENER.ORA中IPC和谈的KEY是相反，而一集琐细中KEY必须是独一的.
拾掇次次次第次第次第次第次第次第次第次第次第次第次第次第序递次序：
修改key的值即可。修改后的文件信息：
o8161实例：（没有修改)
# 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实例：（经过修改)
# 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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