MEMORY_MAX_TARGET

MEMORY_MAX_TARGET specifies the maximum value to which a DBA can set the MEMORY_TARGET parameter. It serves as an upper limit so MEMORY_TARGET cannot be set too high accidentally. It also reserves memory for the Oracle database instance, in case you want to increase MEMORY_TARGET at runtime without a restart. Therefore, MEMORY_MAX_TARGET should be no lower than MEMORY_TARGET.

Suggested setting: No lower than MEMORY_TARGET