How to start oracle data monitoring

Steps to start a data listener in Oracle: Check the current status: lsnrctl status Start: lsnrctl start Enable automatic start: lsnrctl set auto_start true Verify the startup status: lsnrctl status Check the log file (/u01/app/oracle /product//server/tnsnames.ora) for the error message.

How to start a data listener in Oracle?

Method:

1. Check the status of the data listener

Check the current status of the data listener through the following command Status:

<code class="bash">lsnrctl status</code>

2. Start the data listener

If the data listener has stopped, you can use the following command to start it:

<code class="bash">lsnrctl start</code>

3. Enable automatic startup

In order to ensure that the data listener starts automatically after the server restarts, you need to enable the automatic startup option:

<code class="bash">lsnrctl set auto_start true</code>

4. Verify that the data listener is Started

Execute the following command again to verify that the data listener has started successfully:

<code class="bash">lsnrctl status</code>

5. Check the log file

If If you encounter a problem starting the data listener, check the log file (usually located at /u01/app/oracle/product/<oracle_home>/server/tnsnames.ora) for error messages.

Tips:

• If the data listener cannot be started, it may be due to a port conflict or permission issue.
• You can use the lsnrctl set command to modify other settings of the data listener, such as the listening port and protocol.
• If you need to share data listeners between different database instances, you need to modify the configuration to reflect this.

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