"Nicolas VERGER" <[EMAIL PROTECTED]> writes:
> 2002-11-05 14:46:44 [5768]   FATAL 2:  failed to add item with len = 191
> to page 150 (free space 4294967096, nusd 0, noff 0)

> template1=# select version();
> PostgreSQL 7.2.1 on i686-pc-linux-gnu, compiled by GCC 2.96

Hmm.  This looks a lot like the bug I recently noted in vacuum's
free-space calculations --- but that bug only affects machines where
MAXALIGN > 4, which I would not expect for an Intel machine.  Anyway
you might try this patch:

*** pgsql-server/src/backend/commands/vacuum.c  2002/10/21 22:06:19     1.243
--- pgsql-server/src/backend/commands/vacuum.c  2002/10/31 19:25:29     1.244
***************
*** 1753,1759 ****
                                        }
                                        to_vacpage->free -= MAXALIGN(tlen);
                                        if (to_vacpage->offsets_used >= 
to_vacpage->offsets_free)
!                                               to_vacpage->free -= 
MAXALIGN(sizeof(ItemIdData));
                                        (to_vacpage->offsets_used)++;
                                        if (free_vtmove == 0)
                                        {
--- 1753,1759 ----
                                        }
                                        to_vacpage->free -= MAXALIGN(tlen);
                                        if (to_vacpage->offsets_used >= 
to_vacpage->offsets_free)
!                                               to_vacpage->free -= sizeof(ItemIdData);
                                        (to_vacpage->offsets_used)++;
                                        if (free_vtmove == 0)
                                        {

(Line numbers are for recent CVS tip and are off a little for 7.2, but
there's only one occurrence of MAXALIGN(sizeof(... in vacuum.c; you
can't miss it.)

While you are at it, be sure to update to 7.2.3.  There are some
*critical* bug fixes in 7.2.3.

                        regards, tom lane

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