Hi, I am a new user of PostgreSQL and there are some questions about its performance in a scenario with a high requisition rate Lets picture an imaginary scenario: In my system (Debian Linux), there are 200.000.000 records on the database, and a total number of 10.000 diferent users. (the manual stated the following: there is a main process called postmaster. It starts new processes to each different request and each different user ... I dont understand very well ... please correct me if I`m wrong) If all users try to access, through WEB, at same time the database, what happens: 1. With the OS? Will it crash? 2. Will the Postmaster process startup 10.000 diferent processes at the same time? 3. What about performance? Is there any peformance downgrade? 4. What is the best solution for this problem? 5. How many simultaneos requests may the Postmaster open withouth decreasing perfomance? Grettings, Kilmer Cruz ---------------------------(end of broadcast)--------------------------- TIP 8: explain analyze is your friend