A long time ago, in a galaxy far, far away, [EMAIL PROTECTED] (ow) wrote: > --- Tom Lane <[EMAIL PROTECTED]> wrote: >> Actually you can only have 4 billion SQL commands per xid, because the >> CommandId datatype is also just 32 bits. I've never heard of anyone >> running into that limit, though. > > Perhaps noone yet had a table with 4B records in pgSql. Otherwise, > how would they dump/restore it?
I may have been guilty of hyperbole, by using the number 10 billion, but not of proving this impossible. If you had a table that large, dump/restore wouldn't have any XID problems because the normal dump/restore involves copying the data out (ONE query, ONE XID), and then reading it via the COPY command (again, ONE query, ONE XID). And I think I would be quite displeased if I had a table with that many records, in any case, because dump/restore would take an enormously long time as would reindexing. -- (format nil "[EMAIL PROTECTED]" "cbbrowne" "ntlug.org") http://cbbrowne.com/info/linuxdistributions.html 16-inch Rotary Debugger: A highly effective tool for locating problems in computer software. Available for delivery in most major metropolitan areas. Anchovies contribute to poor coding style. ---------------------------(end of broadcast)--------------------------- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faqs/FAQ.html
