How to Check Oracle Listener Status in Linux

 Introduction

The Oracle Listener is a key component that allows clients to connect to the database. As a DBA, you often need to check whether the listener is running properly on Linux.

1. Check Listener Status

Run the command:

lsnrctl status

👉 This shows whether the listener is running, its port, and the services it supports.

2. Start the Listener

lsnrctl start

3. Stop the Listener

lsnrctl stop

4. Reload the Listener

If you change the configuration file (listener.ora), reload with:

lsnrctl reload

Conclusion

By mastering the lsnrctl commands, you can easily manage and monitor Oracle Listener on Linux. Always ensure the listener is running before client connections are tested.