Linux Alpha destroydb and pg_dump problem

Hi,

On my Alpha (linux-2.2.12), destroydb and pg_dump kill the backend.

Basically, the pg_database table is queried for the "oid" column which
is never found/reached.
A "select oid from pg_database" has the same effect, ie. kills the backend.

On my Intel box all the above works.

Does anyone have any ideas/pointers?

Cheers,

Gerd.