Damaged table "pg_class"

Hello all,

when I try to access the system-table "pg_class", I get the following
error:

zeda=# select * from pg_class;
NOTICE: get_groname: group 1 not found
pqReadData() -- backend closed the channel unexpectedly.
This probably means the backend terminated abnormally
before or while processing the request.
The connection to the server was lost. Attempting reset: Failed.
!#

What happened? Is there any way to repare the damaged table?

Thanks in advance for all of you, who spend their valuable time!

Best regards, Jens

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Jens Hartwig
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debis Systemhaus GEI mbH
10875 Berlin
Tel. : +49 (0)30 2554-3282
Fax : +49 (0)30 2554-3187
Mobil : +49 (0)170 167-2648
E-Mail : jhartwig(at)debis(dot)com
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