... Envs are defined as user specific variables for the standard user <SID>adm.
How the system get's it's environment variables is a little different from the standard way and described in SAP Note 31559.
Depending on the database vendor used the SAP System specific environment variables differ.
These variables and the membership in several user groups (also depending on the DB-Vendor) are needed to run SAP-(mostly command line)-tools in the correct configuration.
Therefore it is currently not recommended to use any other user than <SID>adm to perform basic administrative tasks on the SAP Systems.
regards
Peter