pgAdmin - PostgreSQL Tools
https://www.pgadmin.orgpgAdmin 4 supports multiple authentication methods through its pluggable architecture. In addition to the four existing authentication methods; Kerberos, LDAP, OAuth 2.0, and internal, pgAdmin4 now supports webserver authentication.
PostgreSQL - ArchWiki - Arch Linux
https://wiki.archlinux.org/title/PostgreSQLpgAdmin 4 issues after upgrade to PostgreSQL 12 If you see errors about string indices must be integers when navigating the tree on the left, or about column rel.relhasoids does not exist when viewing the data, remove the server from the connection list in pgAdmin and add a fresh server instance. pgAdmin will otherwise continue to treat the server as a PostgreSQL 11 server resulting …