oracle内存管理

oracle 11g中  内存用了自动化管理

 

MEMORY_TARGET的值大于/dev/shm  就会报错  ORA-00845: MEMORY_TARGET not supported on this system错误,

redhat系列系统中，/dev/shm的默认值是系统总内存的一半

 

 

alter system set memory_max_target=1024M scope=spfile;

alter system set memory_target=1024M scop=spfile;

alter system set sga_target=0 scope=spfile;

alter system set sga_max_size=0 scope=spfile;

alter system set pga_aggregate_target=0 scope=spfie;

 

--查看sga

show parameter sga;

--查看实际pga

select * from v$pgastat