We use Oracle 11gr2 on win2008R2.
Our member set sga max size by
alter system set sga_max_size scope=spfile; max size to 6GB.
And we restared that OS and DB instance , then
show parameters sga_max_size was 7.6GB
Why is that ?
If MEMORY_TARGET is set to a non-zero value:
Now check if your memory_target is set.
Read this metalink note as well:
Automatic Memory Management (AMM) on 11g (Doc ID 443746.1)
The reason why I by mistake posts duplicate posts that in specific network environment,
my posts were not reflected to the forum. I am investigating about that.