Oracle10移除不必要的监听（oracle10移除监听）

Oracle10: Removing Unnecessary Listeners

Listeners play an important role in Oracle 10 database management as they help manage the communication between the database server and the clients. However, there may be times when unnecessary listeners are running on the server, which can consume resources and pose a security risk. In this article, we will discuss how to identify and remove unnecessary listeners in Oracle 10.

Identifying Unnecessary Listeners

To identify listeners that are not required, we need to first list all the listeners currently running on the server. This can be done by logging into SQL*Plus and running the following command:

“`lsnrctl status“`

This will display a list of all the listeners and their status. In our case, we are looking for listeners that are not actively being used.

Next, we need to check the logs to see which applications or services are actively using the listeners. This can be done by running the following command:

“`grep “SERVICE_NAMES” listener.log“`

This will show a list of service names that are actively using the listeners. If there are no service names listed or if the service names are not familiar, it is likely that the listeners are not needed.

Removing Unnecessary Listeners

Once we have identified the listeners that are not needed, we can remove them using the following steps:

1. Stop the listener by running the following command:

“`lsnrctl stop listener_name“`

Replace “listener_name” with the name of the listener to be stopped.

2. Edit the listener.ora file to remove the unnecessary listener. Open the file using a text editor and delete the section for the listener that is not needed.

3. Save the changes and exit the editor.

4. Restart the listener by running the following command:

“`lsnrctl start listener_name“`

Replace “listener_name” with the name of the listener that was edited.

5. Verify that the listener has been successfully removed by running the following command:

“`lsnrctl status“`

This will display a list of all the listeners and their status, and the deleted listener should no longer be listed.

Conclusion

Removing unnecessary listeners in Oracle 10 can help optimize performance and improve security. By identifying and removing listeners that are not needed, we can reduce resource consumption and decrease the risk of unauthorized access to the database server. It is recommended to regularly check and review the listeners running on the server to ensure that only the necessary ones are active.