With the Oracle Multitenant option of Oracle Database 12c, the services of individual pluggable databases (PDBs) can be opened selectively on specified nodes of an Oracle Real Application Clusters (Oracle RAC) cluster. By partitioning the System Global Areas in this way across the cluster, the Oracle Multitenant option with Oracle RAC can be used to “scale out” across a cluster for flexible adaptation to varying load profiles. A true symbiotic relationship: the Oracle Multitenant option makes Oracle RAC better, and Oracle RAC makes the Oracle Multitenant option better!