Recover postgres user in PostgreSQL
问题 I need to recover the superuser privilege for the postgres user, because it lost the superuser qualification. I cannot do anything in the psql shell, it gives the message must be superuser to create superusers The system is Ubuntu 16.04 and PostgreSQL 9.5. Can I recover this postgres user? 回答1: If you managed to remove superuser privileges from all your users, you'll have to start the database in single user mode: Stop the database server as operating system user postgres : /path/to