DB Dump Size

[<steve@xxxxxxxxxxxxxxxxxx>]

Hi all,

I am curious as to why a pg dump of database "name" is 2.9gig. But is
measured at 1.66gig by:
SELECT pg_database_size(pg_database.datname) AS db_size FROM pg_database
WHERE pg_database.datname='name' ;

This dump was about 1 gig around 12 months ago.

I am performing a monthly vacuum full on the database and a nightly vacuum
all

Thanks.
Steve.