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Continue to ChatMEMORY_TARGET, SGA_TARGET and PGA_AGGREGATE_TARGET http://oracle-help.com/oracle-database/relationship-memory_target-sga_target-pga_aggregate_target/
MEMORY_TARGET, SGA_TARGET and PGA_AGGREGATE_TARGET http://oracle-help.com/oracle-database/relationship-memory_target-sga_target-pga_aggregate_target/