Identify the correct order of consolidation density, from worst to best.
A.
multitenant, schema consolidation, dedicated database, VMs
B.
schema consolidation, VMs, dedicated databases, multitenant
C.
dedicated databases, VMs, schema consolidation, multitenant
D.
VMs, dedicated databases, schema consolidation, multitenant
Oracle Multitenant on SuperCluster T5-8
Data centers today implement database consolidation predominantly using one of the following three options:
• databases in virtual machines (VMs) with typically one database per VM
• multiple stacked single-instance databases (non-CDBs) on the same operating system
• schema- or table-based consolidation inside the same database
Oracle 12c introduces Oracle Multitenant, a new database consolidation model in which multiple Pluggable Databases (PDBs) are consolidated within a Container Database (CDB).
The multitenant architecture delivers the highest consolidation density without the overhead of changing application code and with improved security access controls. Standardization is easier than it has ever been.
Best Choice seems D , but as per below Paper – High Availability Best Practices for
Database Consolidation (see introduction)
http://www.oracle.com/technetwork/database/availability/maa-consolidation-2186395.pdf
Answer should be –> Virtual Machines(VMs) < Schema Consolidation < Dedicated Databases < Multitenant
D is correct ; Sorry for confusion ; As per the link posted it talks about Database Consolidation using RAC 11g not Dedicated DB.