Diagnosing and resolving availability and performance issues are a key part of every database administrator's job. When troubleshooting problems, DBAs often start by identifying what processes are currently running and identifying details about users logged on to the server. It's critical you know how to extract process and user activity from the Linux operating system.
When working with operating system users and processes, some tasks require
root privileges. For example, when installing database software on a Linux server, one of the first steps is to create an operating system user and group. These tasks require
root privileges. Depending on your environment, you may not have a system administrator (SA) ...