How to configure monitoring in oracle database

To configure an Oracle database listener, perform the following steps: Create the listener and specify its name. Edit the listener configuration file, specifying the host, port, and IP address. Start the listener. Verify that the listener is running.

How to configure Oracle database listening

Step 1: Create a listener

1. Open the command prompt and switch to the Oracle home directory.

2. Execute the following command: lsnrctl create <Listener Name>

   • Replace <Listener Name> with the name of the listener .

Step 2: Edit the listener configuration file

1. Use a text editor to open the following file: <ORACLE_HOME>/network/admin/listener.ora
2. Add the following lines to the file:

<code>LISTENER = (
    DESCRIPTION = (
        ADDRESS = (PROTOCOL = TCP)(HOST = <主机名或 IP 地址>)(PORT = <端口>)
    )
)</code>

• Replace <hostname or IP address> is the host name or IP address of the computer where the listener is located.
• Replace <port> with the port number the listener will listen on (default: 1521).

Step 3: Start the listener

1. Navigate to the Oracle home directory.

2. Execute the following command: lsnrctl start <Listener Name>

   • Replace <Listener Name> with the name of the listener .

Step 4: Verify the listener

1. Open the command prompt and switch to the Oracle home directory.

2. Execute the following command: lsnrctl status <Listener Name>

   • Replace <Listener Name> with the name of the listener .
   • If the listener has started successfully, you will see a message similar to the following: "Status of listener: running".

Additional Tips

• It is possible to create multiple listeners to listen on different ports or hosts.
• Make sure the listener port is not blocked by a firewall or other software.
• Regularly check the listener status to ensure it is functioning properly.
• If you encounter any problems, please consult the Oracle documentation or contact Oracle Support for assistance.

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