Re: [HACKERS] [PATCH] Provide 8-byte transaction IDs to

Tom Lane wrote:
> Bruce Momjian <bruce@momjian.us> writes:
> > I am sure you worked hard on this, but I don't see the use case, nor
> > have I heard people in the community requesting such functionality.
> > Perhaps pgfoundry would be a better place for this.
>
> The part of this that would actually be useful to put in core is
> maintaining a 64-bit XID counter, ie, keep an additional counter that
> bumps every time XID wraps around.  This cannot be done very well from
> outside core but it would be nearly trivial, and nearly free, to add
> inside.  Everything else in the patch could be done just as well as an
> extension datatype.
>
> (I wouldn't do it like this though --- TransactionIdAdvance itself is
> the place to bump the secondary counter.)

Agreed.

--
  Bruce Momjian   bruce@momjian.us
  EnterpriseDB    http://www.enterprisedb.com

  + If your life is a hard drive, Christ can be your backup. +