Though VMware recommends setting memory reservations equal to the size of the Oracle SGA in
production environments,
it is acceptable to overcommit more aggressively in non-production environments such as development, test, or QA.
In these environments, a DBA can introduce memory
overcommitment to take advantage of VMware memory reclamation features and techniques. Even in
these environments, the type and number of databases that can be deployed using overcommitment
largely depend on their actual workload.