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Yes its correctly written in the documentation.....But first part and second part are different in the context of the way SGA is managed...Means if you are managing your SGA with AMM (Automatic Memory Management) then first one is correct ....If you are managing your SGA with ASMM or manually (Setting SGA_MAX_SIZE or SGA_TARGET), then second statement holds true.
hi gems... In the Oracle 11gr2 administrator's guide documentation, chapter Part1. 6. Managing memory, I read.. "You can omit the statements that set these parameter (PGA_AGGREGATE_TARGET) values to zero and leave either or both of the values as positive numbers. In this case, the values act as minimum values for the sizes of the SGA or instance PGA." But at the end of the chapter, I read... "You can control this amount by setting the initialization parameter PGA_AGGREGATE_TARGET. Oracle Database then tries to ensure that the total amount of PGA memory allocated across all database server processes and background processes never exceeds this target." These two lines are opposing each other...please make it clear to me...thanks in advance..
okk sir...now i got the point...thanks a lot for your explanation... :) :)