When I start the listener, I get the following "status UNKNOWN"...

Oracle 11g R1 on Oracle Enterprise Linux


Here is the configuration of my listner
**********************************************************************
[oracle@oracle-test admin] $ cat listener.ora
listener.ora # Network Configuration file: /u01/app/oracle/product/11.1.0/db_1/network/admin/listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME=/u01/app/oracle/product/11.1.0/db_1)
(= Extproc PROGRAM)
)
(SID_DESC =
(GLOBAL_DBNAME = orcl.o - test.mydomain.name)
(ORACLE_HOME = u01/app/oracle/product/11.1.0/db_1)
(SID_NAME = orcl)
)
)

LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = xxx.xx.xx.xx) (PORT = 1521))
)
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = CIP)(KEY = EXTPROC1521))
)
)
)

*************************************************************************




When I start the listener, I get the following messages of "Status UNKNOWN".


Why?



[oracle@oracle-test bin] $. / lsnrctl start

LSNRCTL for Linux: Version 11.1.0.6.0 - Production on February 19, 2010 11:22:04

Copyright (c) 1991, 2007, Oracle. All rights reserved.

From /u01/app/oracle/product/11.1.0/db_1/bin/tnslsnr: Please wait...

TNSLSNR for Linux: Version 11.1.0.6.0 - Production
System settings file is /u01/app/oracle/product/11.1.0/db_1/network/admin/listener.ora
Log messages written to /u01/app/oracle/product/11.1.0/db_1/log/diag/tnslsnr/oracle-test/listener/alert/log.xml
Listen on: (DESCRIPTION = (ADDRESS = (PROTOCOL = tcp)(HOST=xxx.xx.xx.xx) (PORT = 1521)))
Listen on: (DESCRIPTION = (ADDRESS = (PROTOCOL = ipc) (KEY = EXTPROC1521)))

Connection to (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST=xxx.xx.xx.xx) (PORT = 1521)))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 11.1.0.6.0 - Production
Start date February 19, 2010 11:22:04
Uptime 0 days 0 h 0 min 0 sec
Draw level off
Security ON: OS Local Authentication
SNMP OFF
Parameter Listener of the /u01/app/oracle/product/11.1.0/db_1/network/admin/listener.ora file
The listener log file /U01/app/Oracle/product/11.1.0/Db_1/log/diag/tnslsnr/Oracle-test/listener/alert/log.XML
Summary of endpoints listening...
(DESCRIPTION = (ADDRESS = (PROTOCOL = tcp)(HOST=xxx.xx.xx.xx) (PORT = 1521)))
(DESCRIPTION = (ADDRESS = (PROTOCOL = ipc) (KEY = EXTPROC1521)))
Summary of services...
Service 'PLSExtProc' has 1 instance (s).
Instance of 'PLSExtProc', status UNKNOWN, has 1 operation for this service...
Service "orcl.o - test.mydomain.name" has 1 match (s).
Instance "orcl", status UNKNOWN, has 1 operation for this service...
The command completed successfully

There is nothing to worry about it. UNKNOWN means, the listener knows the orcl SID because of the list of SIDS. This is called static record. If your instance orcl's up, PMON dynamically registers the listener (if you are using port 1521 without additional configuration), which leads to a READY State.

Kind regards
Uwe

http://uhesse.WordPress.com

Tags: Database

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