What new role in Oracle Database 12c encompasses the administrative privileges required for backup and recovery?
http://docs.oracle.com/cd/E16655_01/backup.121/e17631/release_changes.htm#RCMRF90521 (sys backup privilege)
A DBA informs you that an Oracle instance has started. What does this imply?
YOUR database crashes after a user accidentally kills a background process. What are three possible ways to restart your database?
The following command starts an instance, reads the initialization parameters from the default location, and then mounts and opens the database. (You can optionally specify a PFILE clause.)
STARTUP
If you know that media recovery is required, you can start an instance, mount a database to the instance, and have the recovery process automatically start by using the STARTUP command with the RECOVER clause:
STARTUP OPEN RECOVER
To start or stop your entire cluster database, that is, all of the instances and its enabled services, enter the following SRVCTL commands:
$ srvctl start database -db db_unique_name [-startoption start_options]
Which statement about the Oracle Advanced Security Data Redaction feature is true?
Redacting Sensitive Data for Display
Data Redaction provides selective, on-the-fly redaction of sensitive data in query results prior
to display by applications so that unauthorized users cannot view the sensitive data. It enables
consistent redaction of database columns across application modules accessing the same data.
Data Redaction minimizes changes to applications because it does not alter actual data in
internal database buffers, caches, or storage, and it preserves the original data type and
formatting when transformed data is returned to the application. Data Redaction has no
impact on database operational activities such as backup and restore, upgrade and patch, and
high availability clusters.
Oracle Advanced Security, 12c, Oracle Data Sheet
