Hi Veronica,
I may have run into this issue before, as the error message looks familiar.
Just to check, could you log into the server for this environment (i.e. "g9u1447") as the Delphix environment user/account and run the command "sudo -l"?
The output from the command should list the escalated privileges that the OS account has been allocated. That same command is called by the Delphix "toolkit" on the environment quite often, to verify that the necessary escalated privileges have been granted and are still granted.
If "sudo -l" fails or does not return output, then it is possible that the "sudo" configuration on this server prevents the use of this functionality. This would be indicated by the line "Defaults ... listpw=never" in the "/etc/sudoers" configuration file. If so, we need to change that line to say "listpwd=always" instead to allow the use of "sudo -l" by the Delphix toolkit.
So, if "sudo -l" completes successfully for the Delphix OS user and displays the necessary escalated permissions, then this is not the problem you're seeing.
Hope this helps?
Thanks!
-Tim