adminpack is a PostgreSQL standard module that implements a number of support functions which pgAdmin and other administration and management tools can use to provide additional functionality if installed on a server. Functions implemented by adminpack can only be run by a superuser. Here's a list of these functions: int8 pg_catalog.pg_file_write(fname text, data text, append bool) bool pg_catalog.pg_file_rename(oldname text, newname text, archivname text) bool pg_catalog.pg_file_rename(oldname text, newname text) bool pg_catalog.pg_file_unlink(fname text) setof record pg_catalog.pg_logdir_ls() /* Renaming of existing backend functions for pgAdmin compatibility */ int8 pg_catalog.pg_file_read(fname text, data text, append bool) bigint pg_catalog.pg_file_length(text) int4 pg_catalog.pg_logfile_rotate()