Oracle Oracle Certifications 1Z0-062 Questions & Answers

• Question 271:

  You are connected to a pluggable database (PDB) as a common user with DBA privileges.

  The STATISTICS_LEVEL parameter is PDB_MODIFIABLE. You execute the following:

  SQL > ALTER SYSTEM SET STATISTICS_LEVEL = ALL SID = `*' SCOPE = SPFILE;

  Which is true about the result of this command?

  A. The STATISTICS_LEVEL parameter is set to all whenever this PDB is re-opened.

  B. The STATISTICS_LEVEL parameter is set to ALL whenever any PDB is reopened.

  C. The STATISTICS_LEVEL parameter is set to all whenever the multitenant container database (CDB) is restarted.

  D. Nothing happens; because there is no SPFILE for each PDB, the statement is ignored.

  Correct Answer: A

• Question 272:

  Which two are prerequisites for performing a flashback transaction? (Choose two.)

  A. Flashback Database must be enabled.

  B. Undo retention guarantee for the database must be configured.

  C. EXECUTE privilege on the DBMS_FLASHBACK package must be granted to the user flashing back transaction.

  D. Supplemental logging must be enabled.

  E. Recycle bin must be enabled for the database.

  F. Block change tracking must be enabled tor the database.

  Correct Answer: BD

  References: http://searchoracle.techtarget.com/tip/How-to-perform-Oracle-Flashback-Transaction-Queries https://docs.oracle.com/cd/E11882_01/appdev.112/e41502/adfns_flashback.htm#ADFNS610

• Question 273:

  Examine the query and its output executed In an RDBMS Instance:

  

  Which three statements are true about the users (other than sys) in the output? (Choose three.)

  A. The C # # B_ADMIN user can perform all backup and recovery operations using RMAN only.

  B. The C # # C_ADMIN user can perform the data guard operation with Data Guard Broker.

  C. The C # # A_ADMIN user can perform wallet operations.

  D. The C # # D_ADMIN user can perform backup and recovery operations for Automatic Storage Management (ASM).

  E. The C # # B_ADMIN user can perform all backup and recovery operations using RMAN or SQL* Plus.

  Correct Answer: BDE

  B: SYSDG administrative privilege has ability to perform Data Guard operations (including startup and shutdown) using Data Guard Broker or dgmgrl.

  D: SYSASM The new (introduced in 11g) SYSASM role to manage the ASM instance, variable extent sizes to reduce shared pool usage, and the ability of an instance to read from a specific disk of a diskgroup

  E (Not A): SYSDBA is like a role in the sense that it is granted, but SYSDBA is a special built-in privilege to

  allow the DBA full control over the database

  Incorrect:

  Not C: SYSKM. SYSKM administrative privilege has ability to perform transparent data encryption wallet

  operations.

  Note:

  Use the V$PWFILE_USERS view to see the users who have been granted administrative privileges.

• Question 274:

  In your Database, the TBS PERCENT USED parameter is set to 60 and the TBS PERCENT FREE parameter is set to 20.

  Which two storage-tiering actions might be automated when using information Lifecycle Management (ILM) to automate data movement? (Choose two.)

  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

  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 TBS PERCENT USED

  D. Setting the target tablespace offline

  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 value for TBS_PERCENT_USED specifies the percentage of the tablespace quota when a tablespace is considered full. The value for TBS_PERCENT_FREE specifies the targeted free percentage for the tablespace. When the percentage of the tablespace quota reaches the value of TBS_PERCENT_USED, ADO begins to move data so that percent free of the tablespace quota approaches the value of TBS_PERCENT_FREE. This action by ADO is a best effort and not a guarantee.

• Question 275:

  Which two statements are true about Oracle Data Pump export and import operations? (Choose two.)

  A. You can detach from a data pump export job and reattach later.

  B. Data pump uses parallel execution server processes to implement parallel import.

  C. Data pump import requires the import file to be in a directory owned by the oracle owner.

  D. The master table is the last object to be exported by the data pump.

  E. You can detach from a data pump import job and reattach later.

  Correct Answer: AB

  B: Data Pump can employ multiple worker processes, running in parallel, to increase job performance.

  D: For export jobs, the master table records the location of database objects within a dump file set. / Export builds and maintains the master table for the duration of the job. At the end of an export job, the content of the master table is written to a file in the dump file set. / For import jobs, the master table is loaded from the dump file set and is used to control the sequence of operations for locating objects that need to be imported into the target database.

• Question 276:

  Examine these two statements:

  

  Which three are true about the MRKT tablespace? (Choose three.)

  A. The MRKT tablespace is created as a small file tablespace, because the file size is less than the minimum required for big file files.

  B. The MRKT tablespace may be dropped if it has no contents.

  C. Users who were using the old default tablespace will have their default tablespaces changed to the MRKT tablespace.

  D. No more data files can be added to the tablespace.

  E. The relative file number of the tablespace is not stored in rowids for the table rows that are stored in the MRKT tablespace.

  Correct Answer: CDE

• Question 277:

  In your database, you want to ensure that idle sessions that are blocking active are automatically terminated after a specified period of time.

  How would you accomplish this?

  A. Setting a metric threshold

  B. Implementing Database Resource Manager

  C. Enabling resumable timeout for user sessions

  D. Decreasing the value of the IDLE_TIME resource limit in the default profile

  Correct Answer: B

• Question 278:

  You Execute the Following command to create a password file in the database server: $ orapwd file = `+DATA/PROD/orapwprod entries = 5 ignorecase = N format = 12' Which two statements are true about the password file? (Choose two.)

  A. It records the usernames and passwords of users when granted the DBA role.

  B. It contains the usernames and passwords of users for whom auditing is enabled.

  C. Is used by Oracle to authenticate users for remote database administration.

  D. It records the usernames and passwords of all users when they are added to the OSDBA or OSOPER operating system groups.

  E. It supports the SYSBACKUP, SYSDG, and SYSKM system privileges.

  Correct Answer: CE

• Question 279:

  Identify two situations in which the alert log file is updated.

  A. Running a query on a table returns ORA-600: Internal Error.

  B. Inserting a value into a table returns ORA-01722: invalid number.

  C. Creating a table returns ORA-00955: name us already in used by an existing object.

  D. Inserting a value into a table returns ORA-00001: unique constraint (SYS.OK_TECHP) violated.

  E. Rebuilding an index using ALTER INDEX . . . REBUILD fails with an ORA-01578: ORACLE data block corrupted (file # 14, block # 50) error.

  Correct Answer: AE

  The alert log is a chronological log of messages and errors, and includes the following items:

  *All internal errors (ORA-600), block corruption errors (ORA-1578), and deadlock errors (ORA-60) that occur

  *

  Administrative operations, such as CREATE, ALTER, and DROP statements and STARTUP, SHUTDOWN, and ARCHIVELOG statements

  *

  Messages and errors relating to the functions of shared server and dispatcher processes

  *

  Errors occurring during the automatic refresh of a materialized view

  *

  The values of all initialization parameters that had nondefault values at the time the database and instance start

  Note:

  *

  The alert log file (also referred to as the ALERT.LOG) is a chronological log of messages and errors written out by an Oracle Database. Typical messages found in this file is: database startup, shutdown, log switches, space errors, etc. This file should constantly be monitored to detect unexpected messages and corruptions.

• Question 280:

  Your multitenant container database (CDB) contains pluggable databases (PDBs), you are connected to

  the HR_PDB. You execute the following command:

  SQL > CREATE UNDO TABLESPACE undotb01

  DATAFILE `u01/oracle/rddb1/undotbs01.dbf' SIZE 60M AUTOEXTEND ON;

  What is the result?

  A. It executes successfully and creates an UNDO tablespace in HR_PDB.

  B. It falls and reports an error because there can be only one undo tablespace in a CDB.

  C. It fails and reports an error because the CONTAINER=ALL clause is not specified in the command.

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

  E. It executes successfully but neither tablespace nor the data file is created.

  Correct Answer: E

  Interesting behavior in 12.1.0.1 DB of creating an undo tablespace in a PDB. With the new Multitenant architecture the undo tablespace resides at the CDB level and PDBs all share the same UNDO tablespace.

  When the current container is a PDB, an attempt to create an undo tablespace fails without returning an error.