How to start oracle database

Oracle database startup steps vary depending on the operating system: Linux/UNIX: Log in to the system and execute the oraenv and sqlplus /nolog commands. Windows: Start a command prompt as administrator and execute the oraenv and sqlplus /nolog commands. Verify that the database service is started and that you have the necessary permissions to connect.

How to start an Oracle database

The process for starting an Oracle database varies by operating system, but the following steps are provided General Guidelines:

Linux and UNIX

1. Log in to the system as a user with Oracle software ownership rights.
2. Navigate to the Oracle software installation directory.
3. Execute the following command:

<code>$ cd <oracle>/bin
$ ./oraenv
$ ./sqlplus /nolog</oracle></code>

4. Use the connect command to connect to the database:

<code>SQL> connect /@</code>

Windows

1. Start Windows Command Prompt as administrator.
2. Navigate to the Oracle software installation directory.
3. Execute the following command:

<code>> cd <oracle>/bin
> oraenv
> sqlplus /nolog</oracle></code>

4. Use the connect command to connect to the database:

<code>SQL> connect /@</code>

Others Important Steps

• #Make sure the database service is started. On Linux and UNIX systems, this can be done by examining the output of lsnrctl status. On Windows systems, this is done by checking the status of the Oracle service in Windows Service Manager.
• Make sure you have the necessary permissions to connect to the database.
• If you experience connection problems, check the log files (such as listener.log and alert.log) for more details.

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