Re: pg_clog problem (PG version 7.4.5)

On Sat, Jan 22, 2005 at 12:06:46PM -0500, Jim Buttafuoco wrote:
> didn't work.
>
>
> ERROR: could not access status of transaction 1076101119
> DETAIL: could not read from file "/usr/local/pgsql/data/pg_clog/0402" at offset 57344: Success
>
> any more ideas?

You need to extend the file further than byte 57344. So repeat the dd
command, with count=8.

Anyway, this situation is suspect anyway. There were bugs related to
pg_clog files not being there, but AFAIR they were triggered on segment
edges, not in the middle like this one.

What other files there are in the pg_clog directory? If they are
nowhere near the 0402 vicinity, you may have a memory or disk
corruption problem.

FWIW, 1076101119 is 1000000001000111111111111111111 in binary. Taking
the highest 1 yeilds Xid 2359295. So, what files do you have?

--
Alvaro Herrera (<alvherre[(at)]dcc(dot)uchile(dot)cl>)
"La primera ley de las demostraciones en vivo es: no trate de usar el sistema.
Escriba un guión que no toque nada para no causar daños." (Jakob Nielsen)