"Mark Woodward" <pgsql@mohawksoft.com> writes:
> One of the problems with the current PostgreSQL design is that all the
> databases operated by one postmaster server process are interlinked at
> some core level. They all share the same system tables. If one database
> becomes corrupt because of disk or something, the whole cluster is
> affected.
This problem is not as large as you paint it, because most of the system
catalogs are *not* shared.
> Does anyone see this as useful?
No...
regards, tom lane