Re: Multiple Xids in PGPROC?

Alvaro Herrera <alvherre@dcc.uchile.cl> writes:
> So, the big question is, how do we do this?  The most obvious way (to
> me) is to keep the whole array inside the PGPROC struct.
> ...
> The main downside is that it potentially
> requires a lot of shared memory.  Can we afford that?

No.  Shared memory is fixed size, therefore the above is guaranteed to
fail.

I thought we had devised a solution that did not require expansible
shared memory for this.  Bruce, Manfred, do you recall how that went?

			regards, tom lane