Introduction: In this article, we will see how to manage the database or perform DBA operation using the OEM step by step. Prerequisites: Below are the minimum requirements for Linux environment: Target database should be up & running. Sys user password of target database. Environment: OEM Hostname oem.oraeasy.com OS OL 7.3 OEM Version 13c Release 5 (13.5) Target Hostname uat.oraeasy.com OS OL 8.5 Database Name ORCLDB Database Version 19c (19.27) Summary of activities: We will cover below sections in database using OEM. Performance. Backup. Users. Schema Export. Tablespace. Parameters. Now let's proceed to add the target host in OEM step by step: Performance 1. Using OEM, we can monitor the database performance like its active sessions,wait...