Oracle Oracle Certifications 1Z0-060 Questions & Answers

• Question 141:

  You run a script that completes successfully using SQL*Plus that performs these actions:

  1.

  Creates a multitenant container database (CDB)

  2.

  Plugs in three pluggable databases (PDBs)

  3.

  Shuts down the CDB instance

  4.

  Starts up the CDB instance using STARTUP OPEN READ WRITE

  Which two statements are true about the outcome after running the script? (Choose two.)

  A. The seed will be in MOUNT state.

  B. The seed will be opened read-only.

  C. The seed will be opened read/write.

  D. The other PDBs will be in mount state.

  E. The other PDBs will be opened read-only.

  F. The PDBs will be opened read/write.

  Correct Answer: BD

  B: The seed is always read-only.

  D: Pluggable databases can be started and stopped using SQL*Plus commands or the ALTER PLUGGABLE DATABASE command.

• Question 142:

  You execute the following piece of code with appropriate privileges: User SCOTT has been granted the CREATE SESSION privilege and the MGR role.

  

  Which two statements are true when a session logged in as SCOTT queries the SAL column in the view and the table?

  A. Data is redacted for the EMP.SAL column only if the SCOTT session does not have the MGR role set.

  B. Data is redacted for EMP.SAL column only if the SCOTT session has the MGR role set.

  C. Data is never redacted for the EMP_V.SAL column.

  D. Data is redacted for the EMP_V.SAL column only if the SCOTT session has the MGR role set.

  E. Data is redacted for the EMP_V.SAL column only if the SCOTT session does not have the MGR role set.

  Correct Answer: AC

  Note:

  *

  DBMS_REDACT.FULL completely redacts the column data.

  *

  DBMS_REDACT.NONE applies no redaction on the column data. Use this function for development testing purposes. LOB columns are not supported.

  *

  The DBMS_REDACT package provides an interface to Oracle Data Redaction, which enables you to mask (redact) data that is returned from queries issued by low-privileged users or an application.

  *

  If you create a view chain (that is, a view based on another view), then the Data Redaction policy also applies throughout this view chain. The policies remain in effect all of the way up through this view chain, but if another policy is created for one of these views, then for the columns affected in the subsequent views, this new policy takes precedence.

• Question 143:

  Which three statements are true concerning the multitenant architecture? (Choose three.)

  A. Each pluggable database (PDB) has its own set of background processes.

  B. A PDB can have a private TEMP tablespace.

  C. PDBs can share the SYSAUX tablespace.

  D. Log switches occur only at the multitenant container database (CDB) level.

  E. Different PDBs can have different default block sizes.

  F. PDBs share a common system tablespace.

  G. Instance recovery is always performed at the CDB level.

  Correct Answer: BDG

  B:

  *

  A PDB would have its SYSTEM, SYSAUX, TEMP tablespaces. It can also contains other user created

  tablespaces in it.

  *

  There is one default temporary tablespace for the entire CDB. However, you can create additional

  temporary tablespaces in individual PDBs.

  D:

  *

  There is a single redo log and a single control file for an entire CDB

  *

  A log switch is the point at which the database stops writing to one redo log file and begins writing to

  another. Normally, a log switch occurs when the current redo log file is completely filled and writing must

  continue to the next redo log file.

  G: instance recovery

  The automatic application of redo log records to uncommitted data blocks when an database instance is

  restarted after a failure.

  Incorrect Answers:

  A:

  *

  There is one set of background processes shared by the root and all PDBs. ?

  *

  High consolidation density. The many pluggable databases in a single container database share its

  memory and background processes, letting you operate many more pluggable databases on a particular

  platform than you can single databases that use the old architecture.

  C: There is a separate SYSAUX tablespace for the root and for each PDB.

  F: There is a separate SYSTEM tablespace for the root and for each PDB.

• Question 144:

  You notice that the elapsed time for an important database scheduler Job is unacceptably long.

  The job belongs to a scheduler job class and runs in a scheduler window.

  Which two actions could reduce the job's elapsed time?

  A. increasing the priority of the job class to which the job belongs

  B. increasing the job's relative priority within the job class to which it belongs

  C. increasing resource allocation for the consumer group mapped to the job class in the resource manager plan associated with the scheduler window

  D. moving the job to an existing higher priority scheduler window with the same schedule and duration

  E. increasing the value of the JOB_QUEUE_PROCESSES parameter

  F. increasing the priority of the scheduler window to which the job belongs

  Correct Answer: BC

  http://www.dba-oracle.com/job_scheduling/job_classes.htmhttp://docs.oracle.com/database/121/ADMIN/ schedover.htm#i1106396

• Question 145:

  You plan to migrate your database from a File system to Automatic Storage Management (ASM) on same platform.

  Which two methods or commands would you use to accomplish this task? (Choose two.)

  A. RMAN CONVERT command

  B. Data Pump Export and import

  C. Conventional Export and Import

  D. The BACKUP AS COPY DATABASE ... command of RMAN

  E. DBMS_FILE_TRANSFER with transportable tablespace

  Correct Answer: AD

  A:

  1. Get the list of all datafiles.

  Note: RMAN Backup of ASM Storage

  There is often a need to move the files from the file system to the ASM storage and vice versa. This may come in handy when one of the file systems is corrupted by some means and then the file may need to be moved to the other file system.

  D: Migrating a Database into ASM

  *

  To take advantage of Automatic Storage Management with an existing database you must migrate that

  database into ASM. This migration is performed using Recovery Manager (RMAN) even if you are not

  using RMAN for your primary backup and recovery strategy.

  *

  Example:

  Back up your database files as copies to the ASM disk group.

  BACKUP AS COPY INCREMENTAL LEVEL 0 DATABASE FORMAT '+DISK' TAG 'ORA_ASM_MIGRATION';

• Question 146:

  In your multitenant container database (CDB) containing pluggable database (PDBs), you granted the CREATE TABLE privilege to the common user C # # A_ADMIN in root and all PDBs. You execute the following command from the root container:

  SQL > REVOKE create table FROM C # # A_ADMIN;

  What is the result?

  A. It executes successfully and the CREATE TABLE privilege is revoked from C # # A_ADMIN in root only.

  B. It fails and reports an error because the CONTAINER=ALL clause is not used.

  C. It excludes successfully and the CREATE TABLE privilege is revoked from C # # A_ADMIN in root and all PDBs.

  D. It fails and reports an error because the CONTAINER=CURRENT clause is not used.

  E. It executes successfully and the CREATE TABLE privilege is revoked from C # # A_ADMIN in all PDBs.

  Correct Answer: B

  SQL> create user c##admin identified by stipsi container=all;

  User created.

  SQL> grant create table to c##admin container=all;

  Grant succeeded.

  SQL> revoke create table from c##admin;

  revoke create table from c##admin

  *

  ERROR at line 1:

  ORA-65092: system privilege granted with a different scope to 'C##ADMIN'

• Question 147:

  Which two statements are true concerning the Resource Manager plans for individual pluggable databases (PDB plans) in a multitenant container database (CDB)? (Choose two.)

  A. If no PDB plan is enabled for a pluggable database, then all sessions for that PDB are treated to an equal degree of the resource share of that PDB.

  B. In a PDB plan, subplans may be used with up to eight consumer groups.

  C. If a PDB plan is enabled for a pluggable database, then resources are allocated to consumer groups across all PDBs in the CDB.

  D. If no PDB plan is enabled for a pluggable database, then the PDB share in the CDB plan is dynamically calculated.

  E. If a PDB plan is enabled for a pluggable database, then resources are allocated to consumer groups based on the shares provided to the PDB in the CDB plan and the shares provided to the consumer groups in the PDB plan.

  Correct Answer: AE

  A: Setting a PDB resource plan is optional. If not specified, all sessions within the PDB are treated equally.

  *

  In a non-CDB database, workloads within a database are managed with resource plans.

  In a PDB, workloads are also managed with resource plans, also called PDB resource plans.

  The functionality is similar except for the following differences:

  / Non-CDB Database

  Multi-level resource plans

  Up to 32 consumer groups Subplans / PDB Database Single-level resource plans only Up to 8 consumer groups (not B) No subplans

• Question 148:

  You use a recovery catalog for maintaining your database backups.

  You execute the following command:

  

  Which two statements are true? (Choose two.)

  A. Corrupted blocks, if any, are repaired.

  B. Checks are performed for physical corruptions.

  C. Checks are performed for logical corruptions.

  D. Checks are performed to confirm whether all database files exist in correct locations

  E. Backup sets containing both data files and archive logs are created.

  Correct Answer: BD

  B (not C): You can validate that all database files and archived redo logs can be backed up by running a

  command as follows:

  RMAN> BACKUP VALIDATE DATABASE ARCHIVELOG ALL;

  This form of the command would check for physical corruption. To check for logical corruption,

  RMAN> BACKUP VALIDATE CHECK LOGICAL DATABASE ARCHIVELOG ALL;

  D: You can use the VALIDATE keyword of the BACKUP command to do the following:

  Check datafiles for physical and logical corruption

  Confirm that all database files exist and are in the correct locations.

  Note: You can use the VALIDATE option of the BACKUP command to verify that database files exist and are in the correct locations (D), and have no physical or logical corruptions that would prevent RMAN from creating backups of them. When performing a BACKUP...VALIDATE, RMAN reads the files to be backed up in their entirety, as it would during a real backup. It does not, however, actually produce any backup sets or image copies (Not A, not E).

• Question 149:

  You have installed two 64G flash devices to support the Database Smart Flash Cache feature on your

  database server that is running on Oracle Linux.

  You have set the parameter:

  DB_FLASH_CACHE_FILE= '/dev/flash_device_1' ,'/dev/flash_device_2'

  How should the DB_FLASH_CACHE_SIZE be configured to use both devices?

  A. Set DB_FLASH_CACHE_SIZE = 64G.

  B. Set DB_FLASH_CACHE_SIZE = 64G, 64G

  C. Set DB_FLASH_CACHE_SIZE = 128G.

  D. DB_FLASH_CACHE_SIZE is automatically configured by the instance at startup.

  Correct Answer: B

  * Smart Flash Cache concept is not new in Oracle 12C - DB Smart Flash Cache in Oracle 11g.

  In this release Oracle has made changes related to both initialization parameters used by DB Smart Flash

  cache. Now you can define many files|devices and its sizes for "Database Smart Flash Cache" area. In

  previous releases only one file| device could be defined.

  DB_FLASH_CACHE_FILE = /dev/sda, /dev/sdb, /dev/sdc

  DB_FLASH_CACHE_SIZE = 32G, 32G, 64G

  So above settings defines 3 devices which will be in use by "DB Smart Flash Cache"

  /dev/sda ?size 32G

  /dev/sdb ?size 32G

  /dev/sdc ?size 64G

  New view V$FLASHFILESTAT ?it's used to determine the cumulative latency and read counts of each file|

  device and compute the average latency

• Question 150:

  Examine the following parameters for a database instance: Which three initialization parameters are not controlled by Automatic Shared Memory Management (ASMM)? (Choose three.)

  

  A. LOG_BUFFER

  B. SORT_AREA_SIZE

  C. JAVA_POOL_SIZE

  D. STREAMS_POOL_SIZE

  E. DB_16K_CACHE_SIZE

  F. DB_KEEP_CACHE_SIZE

  Correct Answer: AEF

  Manually Sized SGA Components that Use SGA_TARGET Space SGA Component, Initialization Parameter / The log buffer LOG_BUFFER / The keep and recycle buffer caches DB_KEEP_CACHE_SIZE DB_RECYCLE_CACHE_SIZE / Nonstandard block size buffer caches DB_nK_CACHE_SIZE

  Note:

  *

  In addition to setting SGA_TARGET to a nonzero value, you must set to zero all initialization parameters listed in the table below to enable full automatic tuning of the automatically sized SGA components.

  *

  Table, Automatically Sized SGA Components and Corresponding Parameters