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Re: Huge tables, trying to delete OID's taking 6+hours per table

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On Tue, May 19, 2020 at 6:40 AM Tom Lane <tgl@xxxxxxxxxxxxx> wrote:
Tory M Blue <tmblue@xxxxxxxxx> writes:
> The command i'm using is
> ALTER TABLE tablename SET WITHOUT OIDS;
> Would a drop column oid be better?

Unfortunately, you're kind of stuck.  OIDs are not like regular columns
(at least before v12) --- they are integrated into the tuple header in
a hackish way, and so there's no way to get rid of them without a table
rewrite.

                        regards, tom lane

Poop :) kind of figured that, so it's just painful.

But  I guess if it's doing a table rewrite, is there any configuration params I could boost to help it? Shared_buffers, give it more, work mem, maintenance mem, temp buffers anything you can think of?

Thanks again Tom

Tory 

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