[HACKERS] pg_largeobject implementation question

2012-10-10 Thread Scott Corscadden
I'm pruning an 8.4 database that was using a *lot* of space in pg_largeobject (400GB according to my size query). What I've done seems to work, but I don't know if there's a time-bomb waiting for me, so I have to ask you who've implemented this part. Steps: 1) On new.better.server.com:

Re: [HACKERS] pg_largeobject implementation question

2012-10-10 Thread Scott Corscadden
Tom. ./scc On 2012-10-10, at 11:04 AM, Tom Lane t...@sss.pgh.pa.us wrote: Scott Corscadden sc...@corscadden.ca writes: ** MY QUESTION ** - Will pg_largeobject automatically choose new OIDs that don't conflict, if I've added lo's this way, by direct COPY? In 8.4, yes. In later versions

[HACKERS] MVCC and large objects

2012-10-02 Thread Scott Corscadden
While I'm referring to the 8.4 release, it's a slightly more general question. We're moving away from using pg_largeobject as fast as we can, and while doing so I'm seeing interesting behaviour. I'd like to confirm that this is is expected, or perhaps I don't have tuning parameters set quite