Dirk Lutzebaeck <lutzeb(at)aeccom(dot)com> writes:
> I observe huge files (200Mb-1GB) in the database base dir which belong
> to pg_toast_<OID>_index relations.
Not too surprising...
> I tried to vacuum full the corresponding user table, reindex this
> table or even drop the indexes to no avail.
REINDEX should have worked; please define "to no avail".
regards, tom lane