The Oracle port number can be viewed by using the command line window to enter "netstat -aon | findstr LISTENING | grep oracle"; using the Oracle Listener Control utility "lsnrctl status".
How to check the Oracle port number
Direct viewing method:
- Use the command line window (CMD or Terminal)
- Enter the following command:
<code>netstat -aon | findstr LISTENING | grep oracle </code>
View the result:
Command output All ports that are listening will be displayed, the port containing the "oracle" string is the Oracle port.
Alternative:
Use the Oracle Listener Control Utility (lsnrctl):
- Open the command line window.
- Enter the Oracle listener directory, for example:
<code>cd /u01/app/oracle/product/12.2.0/dbhome_1/bin </code>
- Enter the following command:
<code>lsnrctl status </code>
View the results:
The command output will show the status of all listeners, including their port numbers.
Supplementary Note:
- By default, Oracle database uses port 1521.
- Oracle RAC database uses ports 1521 and 1522.
- If a port matching "oracle" is not found, you may need to check whether the Oracle service is not configured correctly or is not started.
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