Re: bug in 7.3.2

Michael Fuhr <mike@fuhr.org>

From: Michael Fuhr <mike@fuhr.org>
To: Suvarna <suvarnat@cygnus.stpp.soft.net>
Cc: Tom Lane <tgl@sss.pgh.pa.us>, pgsql-hackers@postgresql.org
Date: 2006-03-01T19:59:59Z
Lists: pgsql-hackers
On Wed, Mar 01, 2006 at 10:17:04AM +0530, Suvarna wrote:
> actually the number which are missing are in the range of 20-30 and at the
> max only 3 transactions are going on at any given point in time.
> So if 3 numbers are missing then it was understood the missing numbers are
> very large.

The number of transactions is irrelevant.  If a single transaction
obtains 20 values from a sequence and that transaction is rolled
back, then those 20 sequence values are gone.  Think of a sequence
as a generator of arbitrary unique numbers, not as a way to get
numbers guaranteed to have no gaps.

-- 
Michael Fuhr