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memory components going from 11g to 19c pluggable database

edited May 5, 2022 10:27PM in Database Administration (MOSC) 14 commentsAnswered

Hi all,

We are migrating a number of 11g databases and plug into 19c database

1. I was recommended somehow the SGA_TARGET for cdb should be set to sum(sga_target of 11g databases) X 1.2 (adding 20% on top) .

cdb sga is a shared memory for all the pdbs.

so can sga of 11g database be decreased when plugged in as PDB since sga is sharing?


2. How to adjust pool parameters when plugged in to 19c ?

a. streams_pool_size,

b. shared_pool_size,

c. large_pool_size,

d. db_cache_size

e. java_pool_size


3. How to adjust pga_target when plugged in to 19c?

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