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Which two statements are true about scheduling operations in a pluggable database (PDB)?
A. Scheduler jobs for a PDB can be defined only at the container database (CDB) level.
B. A job defined in a PDB runs only if that PDB is open.
C. Scheduler attribute setting is performed only at the CDB level.
D. Scheduler objects created by users can be exported or imported using Data Pump.
E. Scheduler jobs for a PDB can be created only by common users.
Correct Answer: BD
In general, all scheduler objects created by the user can be exported/imported into the PDB using a 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 to 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?
A. Set the backup_tape_io_slaves parameter to true.
B. Set the dbwr_io_slaves parameter to a nonzero value if synchronous I/O is in use.
C. Configure a large pool if not already done.
D. Remove the rate parameter, if specified, in the allocate channel command.
E. Always use RMAN compression for tape backups rather than the compression provided by the media manager.
F. Always use synchronous I/O for the database.
Correct Answer: BCD
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
For which three pieces of information can you use the RMAN list command?
A. stored scripts in the recovery catalog
B. available archived redo log files
C. backup sets and image copies that are obsolete
D. backups of tablespaces
E. backups that are marked obsolete according to the current retention policy
Correct Answer: ABD
Explanation: About the LIST Command: The primary purpose of the LIST command is to list backups 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
Which three statements are true about a job chain?
A. It can contain a nested chain of jobs.
B. It can be used to implement dependency-based scheduling.
C. It cannot invoke the same program or nested chain in multiple steps in the chain.
D. It cannot have more than one dependency.
E. It can be executed using event-based or time-based schedules.
Correct Answer: ABE
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
Because of logical corruption of data in a table, you want to recover the table from an RMAN backup to a
specified point in time.
Examine the steps to recover this table from an RMAN backup:
1. Determine which backup contains the table that needs to be recovered.
2. Issue the recover table RMAN command with an auxiliary destination defined and the point in time
3. Import the Data Pump export dump file into the auxiliary instance.
4. Create a Data Pump export dump file that contains the recovered table on a target database.
Identify the required steps in the correct order.
A. 1, 4, 3
B. 1, 2
C. 1, 4, 3, 2
D. 1, 2, 4
Correct Answer: D
Because according to oracle PDFs if you run the restore table … auxiliary impede and rename can be included. So there is no reason to make the import manually if it can be already included in step 2.
Examine the command:
SQL> RECOVER DATABASE USING BACKUP CONTROL FILE UNTIL CANCEL;
In which two scenarios is this command required?
A. The current online redo log file is missing.
B. A data file belonging to a noncritical tablespace is missing.
C. All the control files are missing.
D. The database backup is older than the control file backup.
E. All the data files are missing.
Correct Answer: AC
Which two are prerequisites for setting up Flashback Data Archive?
A. Fast Recovery Area should be defined.
B. Undo retention guarantee should be enabled.
C. Supplemental logging should be enabled.
D. Automatic Undo Management should be enabled.
E. All users using Flashback Data Archive should have an unlimited quota on the Flashback Data Archive tablespace.
F. The tablespace in which the Flashback Data Archive is created should have Automatic Segment Space Management (ASSM) enabled.
Correct Answer: DF
There are a number of restrictions for flashback archives: The tablespaces used for a flashback archive must use local extent management and automatic segment space management. The database must use automatic undo management. Reference: http://www.dba-oracle.com/t_11g_new_enabling_fdba.htm
The environmental variable oracle_Base is set to /u01/app/oracle and oracle_home is set to /u01/app/ oracle/product/12.1.0/db1.
You want to check the diagnostic files created as part of the Automatic Diagnostic Repository (ADR). Examine the initialization parameters set in your database.
NAME TYPE VALUE
audit_file_deststring/u01/app/oracle/admin/eml2rep/dump background_dump_deststring core_dump_deststring db_create_file_deststring db_recovery_file_deststring/u01/app/oracle/fast_recovery_area diagnostic_deststring
What is the location of the ADR base?
A. It is set to/u01/app/oracle/product:/12.1.0/db_1/log.
B. It is set to /u01/app/oracle/admin/en12.1.0/dump.
C. It is set to /u01/app/oracle.
D. It is set to /u01/app/oracle/flash_recovery_area.
Correct Answer: C
The Automatic Diagnostic Repository (ADR) is a directory structure that is stored outside of the database.
It is therefore available for problem diagnosis when the database is down.
The ADR root directory is known as the ADR base. Its location is set by the DIAGNOSTIC_DEST initialization parameter. If this parameter is omitted or left null, the database sets DIAGNOSTIC_DEST upon startup as follows:
If environment variable ORACLE_BASE is set, DIAGNOSTIC_DEST is set to the directory designated by
If the environment variable ORACLE_BASE is not set, DIAGNOSTIC_DEST is set to ORACLE_HOME/log.
You want to export the pluggable database (PDB) hr pdb1 from the multitenant container database (CDB)
CDB1 and import it into the cdb2 CDB as the emp_pdb1 PDB.
Examine the list of possible steps required to perform the task:
1. Create a PDB named emp_pdb1.
2. Export the hr_pdb1 PDB by using the full clause.
3. Open the emp_pdb1 PDB.
4. Mount the emp_pdb1 PDB.
5. Synchronize the emp_pdb1 PDB in restricted mode.
6. Copy the dump file to the Data Pump directory.
7. Create a Data Pump directory in the emp_pdb1 PDB.
8. Import data into emp_pdb1 with the full and remap clauses.
9. Create the same tablespaces in emp_pdb1 as in hr_pdb1 for new local user objects.
Identify the required steps in the correct order.
A. 2, 1, 3, 7, 6, and 8
B. 2, 1, 4, 5, 3, 7, 6, 9, and 8
C. 2, 1, 3, 7, 6, 9, and 8
D. 2, 1, 3, 5, 7, 6, and 8
Correct Answer: C
Because step 2 says that you perform an expdp with the full clause and you don’t need to create the
tablespaces when you perform the impdp. FULL=yes will export tablespace definitions. So no need for step 9.
You wish to create jobs to satisfy these requirements:
1. Automatically bulk load data from a flat file.
2. Rebuild indexes on the SALES table after completion of the bulk load.
How would you create these jobs?
A. Create both jobs by using Scheduler-raised events.
B. Create both jobs using application-raised events.
C. Create one job to rebuild indexes using application-raised events and another job to perform bulk load using Scheduler raised events.
D. Create one job to rebuild indexes using Scheduler-raised events and another job to perform bulk load by using events raised by the application.
Correct Answer: C
The bulk loader would be started in response to a file watcher scheduler event and the indexes would be rebuilt in response to an application event raised by the bulk loader. Your application can raise an event to notify the Scheduler to start a job. A job started in this way is referred to as an event-based job. The job can optionally retrieve the message content of the event.
References: https://docs.oracle.com/cd/B28359_01/server.111/b28310/scheduse008.htm#CHDIAJEB https://docs.oracle.com/cd/E18283_01/server.112/e17120/scheduse005.htm#CIABIEJA
Your Oracle 12c multitenant container database (CDB) contains multiple pluggable databases (PDBs). In
the PDB hr_pdb, the common user c##admin and the local user b_admin have only the connect privilege.
You create a common role c##role1 with the create table and select any table privileges.
You then execute the commands:
SQL> GRANTc##role1 TO##Madmin CONTAINER=ALL;
SQL>CONNsys/[email protected]_PDB as sysdba
SQL> GRANTc##role1TO b_admin CONTAINER=CURRENT;
Which two statements are true?
A. C##admin can create and select any table, and grant the c##role1 role to users only in the root container.
B. B_admin can create and select any table in both the root container and Hr_pdb.
C. c##admin can create and select any table in the root container and all the PDBs.
D. B_admin can create and select any table only in hr_pdb.
E. The grant c##role1 to b_admin command returns an error because the container should be set to ALL.
Correct Answer: CD
Examine the commands executed in the root container of your multitenant container database (CDB) that
has multiple pluggable databases (PDBs):
SQL> CREATE USER c##a_admin IDENTIFIED BY orcl123;
SQL> CREATE ROLE c##role1 CONTAINER=ALL;
SQL> GRANT CREATE VIEW TO C##roleI CONTAINER=ALL;
SQL> GRANT c##role1 TO c##a_admin CONTAINER=ALL;
SQL> REVOKE c##role1 FROM c##a_admin;
What is the result of the revoke command?
A. It executes successfully and the c##role1 role is revoked from the c##a_admin user only in the root container.
B. It fails and reports an error because the container=all clause is not used.
C. It executes successfully and the c##rocl1 role is revoked from the c##a_admin user in the root database and all the PDBs.
D. It fails and reports an error because the comtainer=current clause is not used.
Correct Answer: B
SQL> REVOKE c##role1 FROM c##a_admin; REVOKE c##role1 FROM c##a_admin * ERROR at line 1: ORA – 01951: ROLE `C##ROLE1\’ not granted to `C##A_ADMIN\’ SQL> REVOKE c##role1 FROM c##a_admin CONTAINER=ALL; Revoke succeeded. SQL> This CREATE USER c##a_admin IDENTIFIED BY orcl123; will create a common user event container that is not specified.
Examine the RMAN command:
RMAN> CONFIGURE ENCRYPTION FOR DATABASE ON; RMAN> BACKUP DATABASE PLUS ARCHIVE LOG;
Which prerequisite must be met before accomplishing the backup?
A. The password for the encryption must be set up.
B. Oracle wallet for the encryption must be set up.
C. All the tablespaces in the database must be encrypted.
D. Oracle Database Vault must be enabled.
Correct Answer: B
Configuration encryption will be used by Transparent encryption. For transparent encryption, you will need to create a wallet, and it must be open. Transparent encryption will then occur automatically after you have issued the CONFIGURE ENCRYPTION FOR DATABASE ON or CONFIGURE ENCRYPTION FOR TABLESPACE ON command.
CONFIGURE ENCRYPTION: You can use this command to persistently configure transparent encryption. You cannot persistently configure dual mode or password mode encryption.
SET ENCRYPTION: You can use this command to configure dual mode or password mode encryption at the RMAN session-level.
A database is running in archive log mode. The database contains locally managed tablespaces. Examine the RMAN command:
RMAN> BACKUP AS COMPRESSED BACKUP SET SECTION SIZE 1024M DATABASE;
Which statement is true about the execution of the command?
A. The backup succeeds only if all the tablespaces are locally managed.
B. The backup succeeds only if the RMAN default device for backup is set to disk.
C. The backup fails because you cannot specify the section size for a compressed backup.
D. The backup succeeds and only the used blocks are backed up with a maximum backup piece size of 1024 MB.
Correct Answer: D
COMPRESSED enables binary compression.
RMAN compresses the data written into the backup set to reduce the overall size of the backup set. All backups that create backup sets can create compressed backup sets. Restoring compressed backup sets is no different from restoring uncompressed backup sets.
RMAN applies a binary compression algorithm as it writes data to backup sets. This compression is similar to the compression provided by many media manager vendors. When backing up to a locally attached tape device, compression provided by the media management vendor is usually preferable to the binary compression provided by BACKUP AS COMPRESSED BACKUPSET.
Therefore, use uncompressed backup sets and turn on the compression provided by the media management vendor when backing up to locally attached tape devices. You should not use RMAN binary compression and media manager compression together. Some CPU overhead is associated with compressing backup sets. If the target database is running at or near its maximum load, then you may find the overhead unacceptable.
In most other circumstances, compressing backup sets saves enough disk space to be worth the CPU overhead. SECTION SIZE sizeSpec Specifies the size of each backup section produced during a data file backup.
By setting this parameter, RMAN can create a multisection backup. In a multisection backup, RMAN creates a backup piece that contains one file section, which is a contiguous range of blocks in a file. All sections of a multisection backup are the same size.
You can create a multisection backup for a data file, but not a data file copy. File sections enable RMAN to create multiple steps for the backup of a single large data file. RMAN channels can process each step independently and in parallel, with each channel producing one section of a multisection backup set.
If you specify a section size that is larger than the size of the file, then RMAN does not use a multisection backup for the file. If you specify a small section size that would produce more than 256 sections, then RMAN increases the section size to a value that results in exactly 256 sections.
Depending on where you specify this parameter in the RMAN syntax, you can specify different section sizes for different files in the same backup job. Note: You cannot use SECTION SIZE with MAXPIECESIZE or with INCREMENTAL LEVEL 1.
In your database, the tbs percent used parameter is set to 60 and the tbs percent free parameter is set to
Which two storage-tiering actions might be automated when using Information Lifecycle Management (ILM) to automate data movement?
A. The movement of all segments to a target tablespace with a higher degree of compression, on a different storage tier, when the source tablespace exceeds tbs percent used
B. Setting the target tablespace to read-only after the segments are moved
C. The movement of some segments to a target tablespace with a higher degree of compression, on a different storage tier, when the source tablespace exceeds the TBS percent used
D. Taking the target tablespace offline after the segments are moved
E. The movement of some blocks to a target tablespace with a lower degree of compression, on a different storage tier, when the source tablespace exceeds tbs percent used
Correct Answer: BC
The threshold for activating tiering policies is based on two parameters: TBS PERCENT USED and TBS PERCENT FREE Both values can be controlled by the DBMS_ILM_ADMIN package. TBS PERCENT USED and TBS PERCENT FREE default to 85 and 25, respectively.
Hence, whenever the source tablespace\’s usage percentage goes beyond 85 percent, any tiering policy specified on its objects will be executed and objects will be moved to the target tablespace until the source tablespace becomes at least 25 percent free.
Note that it is possible to add a custom condition to tiering policies to enable the movement of data based on conditions other than how full the tablespace is. In addition, the READ ONLY option must be explicitly specified for the target tablespace.
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