Michael Riess <[EMAIL PROTECTED]> writes:
> (We NEED that many tables, please don't recommend to reduce them)

No, you don't.  Add an additional key column to fold together different
tables of the same structure.  This will be much more efficient than
managing that key at the filesystem level, which is what you're
effectively doing now.

(If you really have 15000 distinct rowtypes, I'd like to know what
your database design is...)

                        regards, tom lane

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