实验一：     从AMM改成ASMM管理#######备份参数文件>  pfile='/tmp/init1222.ora'  spfile; created.> show parameter memory_target;NAME                                 TYPE        ------------------------------------ ----------- ------------------------------memory_target                        big  1G>  system  memory_target=0 scope=spfile;System altered.> show parameter sgaNAME                                 TYPE        ------------------------------------ ----------- ------------------------------lock_sga                             boolean     pre_page_sga                         boolean     sga_max_size                         big  1Gsga_target                           big  0unified_audit_sga_queue_size              1048576>  system  sga_target=980M scope=spfile;System altered.> show parameter pgaNAME                                 TYPE        ------------------------------------ ----------- ------------------------------pga_aggregate_limit                  big  2Gpga_aggregate_target                 big  0>  system  pga_aggregate_target=20M SCOPE=SPFILE;System altered.> ;>startup实验二：     从ASMM改成AMM管理