pgAdmin dialog for adding new database connections asks for a "Maintenance DB".
In order to be able to connect, I set it to the database I want to connect (and also, I have the rights to connect).
So, why is it named "Maintenance DB" instead of "DB" or "Database"?.
Best Answer
It is worth mentioning that you are free to define any existing database in the cluster as "Maintenance DB". You are not limited to the options suggested by the interface, which are just typical defaults.
This is particularly useful for users with limited permissions or read-only access. Access to a single DB is simpler with the same DB as "Maintenance DB". Related:
What is the maintenance db? The manual: