"Stephen R. van den Berg" <srb@cuci.nl> writes:
> datalog=# vacuum verbose fnetsense;
> INFO: vacuuming "public.fnetsense"
> PANIC: right sibling is not next child in "fnetsense_utstamp_key"
> server closed the connection unexpectedly
Were you running with full_page_writes off during some earlier use of
this database? There is a known failure mode that can produce this
situation in 8.1.x for x < 4, see thread here:
http://archives.postgresql.org/pgsql-bugs/2006-04/msg00135.php
> Restarted the server, didn't help. Error is persistent
> now, DB is still working, don't know how to repair the
> DB.
REINDEX that index.
regards, tom lane