What are the reasons why the Oracle listener fails to start?

6 months ago

2 minutes

Configuration error in the listening program: The listening program is configured with incorrect port or IP address settings, causing the failure to start listening correctly.
Program file corruption monitoring: Monitoring the program’s configuration file or executable file is damaged or missing, causing the listener to fail to start normally.
The port is occupied: another program is using the port that the listening program needs, preventing the listening program from starting.
Permission issue: The directory or file where the monitoring program is located does not have the correct permissions, causing the monitoring program to fail to start.
Firewall or security software blocking: The necessary ports for the listening program were blocked by the firewall or security software, preventing the listening program from starting.
Internet issue: Unstable network connection or incorrect network configuration prevents the listening program from starting up properly.
Other reasons: other unknown issues prevent the monitoring program from starting.