Which two statements are true about scheduling operations in a pluggable database (PDB)?
In general, all scheduler objects created by the user can be exported/imported into the PDB using data pump. Predefined scheduler objects will not get exported and that means that any changes made to these objects by the user will have to be made once again after the database has been imported into the pluggable database. However, this is how import/export works currently. A job defined in a PDB will run only if a PDB is open.
A complete database backup to media is taken for your database every day. Which three actions would you take to improve backup performance?
Tuning RMAN Backup Performance: Procedure Many factors can affect backup performance. Often, finding the solution to a slow backup is a process of trial and error. To get the best performance for a backup, follow the suggested steps in this section: Step 1: Remove RATE Parameters from Configured and Allocated Channels Step 2: If You Use Synchronous Disk I/O, Set DBWR_IO_SLAVES Step 3: If You Fail to Allocate Shared Memory, Set LARGE_POOL_SIZE Step 4: Tune RMAN Tape Streaming Performance Bottlenecks Step 5: Query V$ Views to Identify Bottlenecks
References:
https://docs.oracle.com/database/121/BRADV/rcmtunin.htm#BRADV172
For which three pieces of information can you use the RMAN list command?
About the LIST Command: The primary purpose of the LIST command is to list backup and copies. For example, you can list: -Backups and proxy copies of a database, tablespace, datafile, archived redo log, or control file -Backups that have expired -Backups restricted by time, path name, device type, tag, or recoverability -Archived redo log files and disk copies.
References:
http://docs.oracle.com/cd/B28359_01/backup.111/b28270/rcmreprt.htm#BRADV89585
You notice performance degradation in your production Oracle 12c database. You want to know what caused this performance difference.
Which method or feature should you use?
Which three statements are true about a job chain?
Chains are the means by which you can implement dependency based scheduling, in which jobs are started depending on the outcomes of one or more previous jobs. DBMS_SCHEDULER.DEFINE_CHAIN_STEP DBMS_SCHEDULER.DEFINE_CHAIN_EVENT_STEP
References:
http://docs.oracle.com/cd/B28359_01/server.111/b28310/scheduse009.htm#ADMIN12
