Database Memory & 4030/4031 (MOSC)

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Oracle memory model AMM, ASMM

edited Jan 24, 2025 1:35AM in Database Memory & 4030/4031 (MOSC) 8 commentsAnswered

I have fonud this database (Oracle Enterprise 19) with the following parameters (I did login to PDB):

sga_max_size 40G
sga_target 0
memory_max_target 0
memory_target 0
pga_aggregate_target 10G

Buffer cache, shared pool, java pool, streams pool, large pool are all set to 0 (zero).

  1. What memory model would that be?
  2. if I now set ex. db_cache_size = 3G, what would be the meaning of that, fixed size 3G or starting value of 3G, and would that be applicable to other components of SGA, ex. shared pool, java pool, etc…?
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