RC-50204 - Db port is in use. How to release ?

RC-50204 - Db port is in use (Port Value 1523)
I need to release this.
I have issued netstat -a | grep 1523.
How can I realease this port ??
10.2.0
AIX 5.2
Thanks.

Probably it is listener which is running on port 1523. Then stop the listener.
Look at $ORACLE_HOME/network/admin/listener.ora is it really listening on port 1523 and then as oracle software owner issue
lsnrctl stop
Or You can do it following:
Run command:
lsof -i:1523
This command will show which process is using port 1523.
Then with
ps -ef | grep ...
find the process and then
kill -9 ...

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