>>Or you could fork over hundreds of thousands of dollars for Oracle's
>>RAC.
>
>
> No please do not talk about this again ... I'm looking about a PostgreSQL
> solution ... I know RAC ... and I'm not able to pay for a RAC certify
> hardware configuration plus a RAC Licence.
There is absolutely zero PostgreSQL solution...
You may have to split the data yourself onto two independent db servers
and combine the results somehow in your application.
Chris