18:45:47 # free -m
total used free shared buffers cached
Mem: 96679 95909 770 0 1530 19550
-/+ buffers/cache: 74828 21851
Swap: 12287 652 11635
Hi all. The below output is from a RHEL 4.5 node running a single Oracle instance. I am looking to increase the SGA shortly and am curious about the effects given the current utilization information above. I understand that this system has 770mb of "free" memory and roughly 20gb allocated in buffers & cache. My question is, if I were to increase the SGA by about 4gb, this would take away from available memory that
can be used for buffers and cache, do i run a risk of having some IO issues given the amount of cache that i am currently usiing?
Thank you in advance for any feedback you can provide!