fatal remaining connection slots are reserved for non-replication superuser connections

fatal remaining connection slots are reserved for non-replication superuser connections  fatal remaining connection slots are reserved for non-replication superuser connections connection to server at , port 5432 failed: FATAL: remaining connection slots are reserved for non-replication superuser connections.  fatal bet  connect to pgsql server : FATAL: remaining connection slots are reserved for non-replication superuser connections? Jan 8 08:22:41 prd-mail-1

fortune spin FATAL: remaining connection slots are reserved for non-replication superuser connections Retrying The application is very slow and The username is incorrect. · The user is connecting from a URL other than @XXX . · The user doesn't have the correct privileges for the database

FATAL: remaining connection slots are reserved for non-replication superuser connections. Resolution. Stop katello services $ katello-service connection to server at , port 5432 failed: FATAL: remaining connection slots are reserved for non-replication superuser connections.