Role of oralce-Oracle Net Manager

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• Oracle Net manager is a small Component of Oracle client.
• In the Oracle Enterprise Manager Console, if an incorrect service is configured, it cannot be deleted. You must go to Oracle Net manager to view all your previous configurations, you can also edit or delete a file.
• Oracle Net manager is a tool that helps you configure and manage the Oracle network environment. Oracle Net Manager allows you to configure and manage the following Oracle Net features and components:
• You can create or modify the Network Description of the Database Service in the tnsnames. ora file, directory server, or Oracle names server. The Network Description called the connection descriptor is mapped to the connection identifier (during database connection, the client uses the connection identifier in their connection string ).
• You can create or modify a listener, which is a process on the server that receives and responds to database service client connection requests.
• You can create or modify a summary file, which is a set of parameters that determine how the client connects to the Oracle network. You can configure naming methods, event records, tracking, external naming parameters, and ORACLE Advanced Security Client parameters.

Oracle Net manager is a small component of the Oracle client. The Oracle client provides you with sqlplus for connecting to the Oracle server. It is a command line interface. If you install PLSQL, the Oracle client must be installed, because the database in your PLSQL is installed with tnsname in the Oracle client configuration file. the configuration information of the remote database you configured is stored in this file, and PLSQL is also the read connection descriptor. Oracle's sqlplus is intended for management, PLSQL is a good development tool, so it is preferred for Oracle development.

Configure services and listeners in Oracle Net manager.In the Oracle Enterprise Manager Console, if an incorrect service is configured, it cannot be deleted. You must go to Oracle Net manager to view all your previous configurations, you can also edit or delete a file. Oracle Net manager is a tool that helps you configure and manage the Oracle network environment. Oracle Net Manager allows you to configure and manage the following Oracle Net features and components:Service nameYou can create or modify the Network Description of the Database Service in the tnsnames. ora file, directory server, or Oracle names server. The Network Description called the connection descriptor is mapped to the connection identifier (during database connection, the client uses the connection identifier in their connection string ).ListenerYou can create or modify a listener, which is a process on the server that receives and responds to database service client connection requests.ProfileYou can create or modify a summary file, which is a set of parameters that determine how the client connects to the Oracle network. You can configure naming methods, event records, tracking, external naming parameters, and ORACLE Advanced Security Client parameters.