LINUX SWITCH USER

 sudo visudo

oracle  ALL=(root) ALL

admrcavan   ALL=(applmgr) NOPASSWD:ALL

admrcavan@apollo's password:

Last login: Mon Aug 10 18:02:52 2020 from 10.162.91.247

[admrcavan@apollo ~]$ sudo -iu applmgr

 apollo:/dbapps/applmgr/HRD2/apps/apps_st/appl>