Обсуждение: MemoryContextAllc error.

i was trying to back up db from the server.
i found the error while i was trying to backup.

bash$ /usr/local/pgsql/bin/pg_dumpall > db.out

ERROR:  MemoryContextAlloc: invalid request size 4294967293

PQendcopy: resetting connection

SQL query to dump the contents of Table 't_oommain' did not execute correct=
ly.  After we read all the table contents from the backend, PQendcopy() fai=
led.  Explanation from backend: 'ERROR:  MemoryContextAlloc: invalid reques=
t size 4294967293

'.

The query was: 'COPY "t_oommain" TO stdout;

'.

pg_dump failed on xenodb, exiting

what shall i do here?
please give me the solution for this problem.
Thank you very much.=

On Wed, 20 Nov 2002 ricky@freightstream.com wrote:

> i was trying to back up db from the server.
> i found the error while i was trying to backup.
>
> bash$ /usr/local/pgsql/bin/pg_dumpall > db.out
>
> ERROR:  MemoryContextAlloc: invalid request size 4294967293

I believe this probably means that you have at least one broken
row in the table. You'll probably need to find the affected row and
remove it.  See if you can do a select * from the table (it'll
probably fail as well), and then use limit/offset to find the
affected row(s).