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Where to change the oracle port number

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Apr 19, 2024 am 06:48 AM

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Oracle port number modification

Question: Where to modify the Oracle port number?

Answer: The Oracle port number can be modified by modifying the listener configuration file or initialization parameter file.

Detailed steps:

1. Modify the listener configuration file (applies to all sessions)

Open Listener configuration file: listener.ora (usually located in the ORACLE_HOME\network\admin directory).
Find the PORT parameter containing the port number.
Modify the PORT parameter value and specify a new port number.
Save changes and exit file.

2. Modify the initialization parameter file (only applicable to specific instances)

Open the initialization parameter file: init.ora (usually located in the ORACLE_HOME\database directory).
Find and modify the following parameters:
- LISTENER: Specify the name of the listener.
- PORT: Specify the port number.
Save changes and exit the file.

Note: After modifying the port number, you need to restart the Oracle service for the change to take effect.

Restart the Oracle service:

In Windows: Run net start oracle-service-name## in the command prompt #.
sudo systemctl restart oracle-service-name in the terminal.

Other tips:

If you encounter connection problems after modifying the port number, try refreshing the TNSNAMES.ORA file or clearing the Oracle network cache.

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