For reference this has been asked, and eventually answered on -general at:
https://www.postgresql.org/message-id/flat/CAKFQuwZDS7nA0SvVnumwjHBxz4CWKQm3bVNTHVeWdtAW_oXNJg%40mail.gmail.com#cakfquwzds7na0svvnumwjhbxz4cwkqm3bvnthvewdtaw_ox...@mail.gmail.com
Further comments below; partly a rehash of
Hi Team,
I am using Postgresql 9.5 and I have created backup_admin user and created
dba_admin ROLE with SUPERUSER and REPLICATION ,after that GRANT dba_admin
role to backup_admin user and executed pg_basebakup utility with
backup_admin user.
But I am not able to use the pg_basebackup utility
