Oracle Database 12c is an enhanced version of Oracle Database 11g. It contains over 500 new features and provides appropriate features for Cloud Computing, Big Data, Security and Availability. The database 12c simplifies the management of the database without altering the existing applications. It is also capable of automating data optimization.
Oracle Database 12c certifications provide the fundamental and advanced level skills that DBAs require to run Oracle database in their own data centers, a hybrid configuration or in the cloud.
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The multi tenancy or multitenant architecture of Oracle Database 12c simplifies consolidation without introducing any kind of changes to the applications.
The multitenant architecture introduces the concepts of CDB (Container Database) and PDB (Pluggable Database).
Oracle Database 12c was released initially in July 2013, and then the second release was done in September 2016 for the cloud and in March 2017 for on-premises.
The major differences include:
Oracle 12c is indeed pluggable and this is one of the new and advanced features of 12c. A pluggable database, such as Oracle 12c, is a collection of schemas, schema objects and non-scheme objects that appear as an individual database.
The c in Oracle Database 12c stands for cloud and depicts that database is cloud enabled.