Re: [HACKERS] Transaction ID wraparound: problem and proposed solution

[Tom Lane]

Hannu Krosing <[EMAIL PROTECTED]> writes:
>> * disk space --- letting pg_log grow without bound isn't a pleasant
>> prospect either.

> How will 2x size increase of xid cause "boundless" growth of pg_log ;)

OK, 2^64 isn't mathematically unbounded, but let's see you buy a disk
that will hold it ;-).  My point is that if we want to think about
allowing >4G transactions, part of the answer has to be a way to recycle
pg_log space.  Otherwise it's still not really practical.

                        regards, tom lane