How to view the content of the oracle database listening port

To view the Oracle database listener port, follow these steps: Connect to the database server. To query the listener port, use the SQL statement: SELECT NAME, LISTENER_PORT, DESCRIPTION FROM V$LISTENER WHERE LISTENER_STATUS = 'OPEN'. Look for the "LISTENER_PORT" column, which contains the port number.

How to check the Oracle database listener port

To check the Oracle database listener port, you can use the following steps :

1. Connect to the database server

• Using SSH:ssh <Username>@< Server Address>
• Use SQL*Plus:sqlplus <Username>/<Password>@<Server Address>

2. Query the port

Use the following SQL statement to query the listener port:

<code class="sql">SELECT NAME, LISTENER_PORT, DESCRIPTION
FROM V$LISTENER
WHERE LISTENER_STATUS = 'OPEN';</code>

3. Find "LISTENER_PORT" Column

The query results will display a column named "LISTENER_PORT", which contains the port number of the listener.

Example:

Assume that the address of the database server is db.example.com, the user name is oracle, and the password is password. To view ports using SQL*Plus, follow these steps:

• Open SQL*Plus: sqlplus oracle/password@db.example.com
• Enter The following query:

<code class="sql">SELECT NAME, LISTENER_PORT, DESCRIPTION
FROM V$LISTENER
WHERE LISTENER_STATUS = 'OPEN';</code>

• Press Enter to view the results.

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