how to find the size of memory that able to take from SGA_TARGET for keep pool without impacting performance?
how to find the size of memory that able to take from SGA_TARGET for keep pool without impacting performance?
mmmhhh... large enough to store at least as many data blocks you expect to pin into memory and at the same time small enough not to cripple your system :-)
How could we know if we know nothing about your system?
By the way, be sure you understand exactly what you are doing when defining KEEP buffer cache. I have seen this backfiring.