To start the oracle database, which service must be started?

Required services required to start Oracle Database: Oracle Database Listener Service: It listens for client connection requests and routes them to the database instance. How to start the Oracle Database Listener Service: Windows: Find and start the "OracleXXXListener" service in the Services Control Panel. Linux/Unix: Use the "lsnrctl start" command to start the listener service.

Required services required to start the Oracle database

In order to start the Oracle database, the following services must be started:

• Oracle Database Listener Service

Oracle Database Listener is a software component that listens for connection requests from clients and routes them to the appropriate database instance. If the listener service is not started, clients will not be able to connect to the database.

How to start the Oracle Database Listener Service

The steps to start the Listener Service vary by operating system. Here are the steps to start the Listener service in Windows:

1. Open the Services control panel.
2. Find the "OracleXXXListener" service (where XXX represents the Oracle database version).
3. Right-click the service and select "Start".

If it is a Linux or Unix system:

1. Open a terminal window.
2. Enter the following command:

lsnrctl start

After starting the listener service, the database client will be able to connect to the database インスタンス.

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