ORA-00845: MEMORY_TARGET not supported on this system

Hi everyone

We have 2 node 11.2.0.2 RAC running on Linux X_64
We have 8 GB RAM on the servers so we decided to utilize 5GB of it for Oracle

Here were our settings as related to SGA / PGA

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
memory_max_target                    big integer 2656M
memory_target                        big integer 2656M
pga_aggregate_target                 big integer 0
sga_max_size                         big integer 2656M
sga_target                           big integer 2G

We changed the AMM settings as below:

SQL> alter system set memory_max_target=5120M scope=spfile sid='*';
System altered.

SQL> alter system set memory_target=4096M scope=spfile sid='*';