Using AMM, sga throwing error of "unable to allocate 32 bytes of shared memory"

I am using Automatic Memory Management. I have set the parameters as :-

memory_max_target big integer 10G
memory_target big integer 9G
sga_max_size big integer 1G
sga_target big integer 0
 
sga_max_size is not set to null. If i am not wrong it takes it as a minimum value of sga and can expand upto memroy_target.When i check from v$sgainfo it shows

SQL> select * from v$sgainfo;

NAME                      BYTES RES

-------------------- ---------- ---

Fixed SGA Size          2235000 No

Redo Buffers           14024704 No

Buffer Cache Size     167772160 Yes

Shared Pool Size      834666496 Yes

Large Pool Size         4194304 Yes

Java Pool Size         37748736 Yes