how to take backup of database server , mySQL, mongodb, oracle

Hello @Keshav Sawant 

You can refer to the below documentation for each Database Agent and how to back them up.

MySQL - https://documentation.commvault.com/2023e/expert/mysql.html

Getting Started with Oracle - https://documentation.commvault.com/2023e/essential/getting_started_with_oracle.html

Getting Started with SQL Server - https://documentation.commvault.com/2023e/essential/getting_started_with_sql_server.html

Getting Started with Microsoft Azure Database for MariaDB - https://documentation.commvault.com/2023e/essential/getting_started_with_microsoft_azure_database_for_mariadb.html

Thank you,
Collin