Mathieu Arnold <mat@mat.cc> writes:
> ... there's a bit more info in the 7.2 database now...
> so I believe that without oids give you a bit smaller databases.
OIDs vs. no OIDs makes absolutely *zero* difference in disk space.
The tuple header overhead is the same either way.
(Well, okay, it saves you one pg_attribute row per OID-less table.
Wow...)
The only reason for the no-OIDs feature is to postpone wraparound
of the OID counter.
regards, tom lane
PS: probably your space savings from updating to 7.2 is a transient
result of having rebuilt the indexes.
