第九章：自動內存管理

 

實驗一：
     從AMM改爲ASMM管理
#######備份參數文件
SQL> create pfile='/tmp/init1222.ora' from spfile;

File created.
SQL> show parameter memory_target;

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
memory_target                        big integer 1G
SQL> alter system set memory_target=0 scope=spfile;

System altered.

SQL> show parameter sga

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
lock_sga                             boolean     FALSE
pre_page_sga                         boolean     TRUE
sga_max_size                         big integer 1G
sga_target                           big integer 0
unified_audit_sga_queue_size         integer     1048576
SQL> alter system set sga_target=980M scope=spfile;

System altered.

SQL> show parameter pga

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
pga_aggregate_limit                  big integer 2G
pga_aggregate_target                 big integer 0
SQL> alter system set pga_aggregate_target=20M SCOPE=SPFILE;

System altered.

SQL>shutdown immediate;
SQL>startup


實驗二：
     從ASMM改爲AMM管理