Re: BLOB question + MS Access ODBC issue

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: jan(at)evation(dot)com (Jan Branbergen)
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: BLOB question + MS Access ODBC issue
Date: 2002-01-18 19:14:02
Message-ID: 8648.1011381242@sss.pgh.pa.us
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jan(at)evation(dot)com (Jan Branbergen) writes:
> in the proces of porting the data, i have created a lot of BLOBs, and
> in the next import run, i truncated the table which was referencing
> the BLOB ( so i did not do a pg_lounlink for the object ).

> this has happened numerous times, so i a worried about the following:
> have the BLOBs become "zombie"-BLOBs ( that is: are they still
> residing in my database ), or are they deleted with a VACUUM for
> example? i could not find this is in the manual.

They're zombies. See the contrib/vacuumlo program for some help
cleaning them out.

regards, tom lane

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