Tuning and Monitoring RMAN and the Automatic Diagnostic Workflow - OCP: Oracle Database 12c Administrator Certified Professional - page 276

Be able to performance-tune your RMAN operations. Understanding how parallelism
can make your database backups and restores perform faster is critical to making RMAN
performant. Understand how to control the duration of a backup and how to reduce the
overall I/O load with the DURATION command.
Understand the Automatic Diagnostic Workflow. Understand the basic framework that
surrounds the Fault Diagnosability Framework. Understand the ADR and what is stored
in the ADR. Understand the framework of technology that feeds data into the ADR and
makes it possible to send failure information to Oracle Support. Understand the tools that
support the ADR such as the ADRCI and the Support Workbench.