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On development server I’d like to remove unused databases. To realize that I need to know if database is still used by someone or not.
Is there a way to get last access or modification date of given database, schema or table?
You can do it via checking last modification time of table’s file.
In postgresql,every table correspond one or more os files,like this:
the relfilenode is the file name of table “test”.Then you could find the file in the database’s directory.
in my test environment:
the last command means listing all files ordered by last modification time.