Four commonly used Oracle database commands (PDB memory and CPU settings)

Memory management in PDB

show con_name
SHOW PARAMETER
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sga_target ; PDB1 memory setting
ALTER SESSION SET CONTAINER=pdb1;
SHOW PARAMETER sga_target;

SHOW PARAMETER SGA_MIN_SIZE: PDB minimum SGA size
SHOW PARAMETER SGA_TARGET:

SETPDB maximum SGA size ALTER SYSTEM_SIZE 512
ALTER SYSTEM_SIZE ALTER SGA_TARGET: =1G;
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set the memory of PDB2
ALTER SESSION SET CONTAINER=PDB2;
SHOW PARAMETER sga_target;

SHOW PARAMETER SGA_MIN_SIZE
SHOW PARAMETER SGA_TARGET
ALTER SYSTEM SET SGA_MIN_SIZE=256M;
ALTER SYSTEM SET sga_target=521M;

the value set in SGA_TARGET is greater than the value in the root container
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PDB CPU resource management

PDB1 CPU
ALTER SESSION SET CONTAINER=pdb1;
SHOW PARAMETER resource_manager_plan
alter system set resource_manager_plan = default_plan;
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Specify the number of CPUs that can be used in the Oracle database
ALTER SESSION SET CONTAINER=pdb1;
SHOW PARAMETER cpu_count
alter

SET cpu_count=1; ALTER S=ESSION SET pdb2;
SHOW PARAMETER resource_manager_plan
alter system set resource_manager_plan = default_plan;
SHOW PARAMETER cpu_count
alter system set cpu_count=2;
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19C
CPU_MIN_COUNT Specifies the minimum number of CPUs required for a pluggable database (PDB) at any given time
. Decimal value from 0.1 to 0.95 , Where the decimal value is a multiple of 0.05 integer value, and the highest value of 1 is (including) CPU_COUNT
ALTER SESSION SET CONTAINER=cdb$root;
SHOW PARAMETER cpu_min_count
alter system set cpu_min_count = "0.5";
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modify PDB1
CPU_MIN_COUNT: Specify the minimum number of CPUs required for a pluggable database (PDB) at any given time.
CPU_COUNT specifies the number of CPUs available for the Oracle database.
alter session set container = pdb1;
alter system set resource_manager_plan = default_plan;
alter system set cpu_min_count=1;
alter system set cpu_count=2;
SHOW PARAMETER cpu_min_count
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modify PDB2
alter session set container = pdb2;
alter system set resource_manager_plan = default_plan;
alter system set cpu_min_count=2;
alter system set cpu_count=4;