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How to start oracle listener

Abigail Rose Jenkins

Apr 11, 2025 pm 10:54 PM

oraclelinux

How to start an Oracle listener? Check the listener status: Use the command lsnrctl status. Start the listener: Use the command lsnrctl start. Verify listener status: Use the command lsnrctl status again.

How to start oracle listener

How to start an Oracle listener?

Startup steps:

Check the listener status: Use the command lsnrctl status to check the listener status. If the listener is not running, the following error message will be displayed:

 <code>LSNRCTL for Linux: Version 12.2.0.1.0 - Production on 29-JAN-2023 10:21:07 Copyright (c) 1991, 2017, Oracle. All rights reserved. Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1521))) TNS-12541: TNS:no listener</code>

Start the listener: Use the command lsnrctl start to start the listener. If the command executes successfully, the following output will be displayed:

 <code>LSNRCTL for Linux: Version 12.2.0.1.0 - Production on 29-JAN-2023 10:21:07 Copyright (c) 1991, 2017, Oracle. All rights reserved. Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1521))) Starting /home/oracle/app/oracle/product/12.2.0/dbhome_1/network/admin/listener.ora</code>

Verify the listener status: Use the command lsnrctl status again to verify that the listener has been successfully started. The output will show that the listener is running:

 <code>LSNRCTL for Linux: Version 12.2.0.1.0 - Production on 29-JAN-2023 10:21:07 Copyright (c) 1991, 2017, Oracle. All rights reserved. Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1521))) Status of the LISTENER ------------------------ Alias LISTENER Version 12.2.0.1.0 Start Date 29-JAN-2023 10:21:07 Uptime 0 days 0 hr. 0 min. 0 sec Trace Level off Security ON: Local OS Authentication SNMP OFF Default Service orcl Listener Parameter File /home/oracle/app/oracle/product/12.2.0/dbhome_1/network/admin/listener.ora Listener Log File /home/oracle/app/oracle/product/12.2.0/dbhome_1/network/log/listener.log Listening Endpoints Summary... (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1521)))</code>

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