How to check the oracle database port number

Oracle database port number query method

Step 1: Use Oracle listener

• Open the command prompt or terminal window .
• Enter the following command:

<code>lsnrctl status</code>

• The output will show the status of the currently running listener, including the port number.

Step 2: Use SQL Query

• Connect to the database using SQL*Plus or another Oracle client.
• Enter the following query:

<code>SELECT value FROM v$parameter WHERE name = 'local_listener'</code>

• The results will display the listener name.

Step 3: Obtain the port number from the listener name

• Use the LISTEN command to query the listener configuration and obtain the port number:

<code>lsnrctl status <监听器名称></code>

• The output will show the port number.

Example

If the listener is named LISTENER, the query command is:

<code>lsnrctl status LISTENER</code>

The output is similar to:

<code>Status of the LISTENER listener
--------------------------------
Version             12.1.0.2.0
Start Date          13-MAY-19
Uptime              0 days 16 hours 47 minutes 04 seconds
Trace Level         off
Security             ON: Local OS Authentication
SNMP                 OFF
Default Service     orcl
Services Summary...
Service "orcl" has 1 instance(s).
Instance "orcl", status READY, has 1 handler(s) for this service...
Handler(s):
  "DEDICATED" established:10035927 received:14858731401 connect time:2934511431842 sent:0 bytes
  Protocol Address         Connect Data
  TCP     (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=<HOSTNAME>)(PORT=1521)))</code>

In this example, the port number of the Oracle database is 1521.

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