How to resolve the issue of Oracle 11g listener not starting?
If the Oracle 11g listener fails to start, you can try the following troubleshooting methods:
- Ensure that the listener.ora configuration file is correctly set up. Make sure that the listener’s listening address, port, and other parameters are properly configured.
- Check the listener log file (listener.log) for any errors or exception messages. Based on the hints in the log file, try to resolve the related issues.
- Check the firewall settings of the system to make sure that the listening ports are not blocked. If the ports are blocked, you can either try disabling the firewall or adding the listening ports to the firewall’s exception list.
- Attempt to restart the listener service. You can start the listener service using a command line tool (such as lsnrctl). Execute the following command:
- start the listener
- If the listener has already been started, you can try stopping the listener service first before restarting it.
- Stop the listener
Start the listener - Check the network configuration of the operating system to ensure the network connection is working properly. You can try pinging the listening address to see if a connection can be established.
- If the above methods fail to resolve the issue, consider reinstalling the Oracle software. Before reinstalling, be sure to backup the relevant files and configurations of the database and listener.
If the issue persists, it is recommended to consult the official Oracle documentation or contact the Oracle support team for more detailed assistance and support.
