1z0-083 practice test

1. Question 1 · 1

   Which three are true about thresholds, metrics, and server-generated alerts? (Choose three.)

   Choose all answers that apply.

   • All metrics are instance related.
   • Cleared stateful alerts are displayed by querying DBA_ALERT_HISTORY.
   • A space usage management alert is automatically cleared after the underlying problem is resolved.
   • They are generated by SMON when a tablespace is 97% full.
   • Metrics are statistical counts for a specific unit.
   • STATISTICS_LEVEL must be set to ALL to generate alerts.

2. Question 2 · 1

   Which three are true about opatchauto? (Choose three.)

   Choose all answers that apply.

   • It performs a shutdown and then a restart of all processes in both Oracle Grid Infrastructure and Oracle Database home during the patching process.
   • It must be invoked by a user with root user privileges.
   • Patches are applied via opatchauto.
   • Users must always input patch plans to opatchauto.
   • It requires the Oracle Grid Infrastructure and Oracle Database instances to be shut down before being invoked.
   • It applies patches in nonrolling mode by default.
   • It is used to apply interim patches to Oracle Grid Infrastructure and Oracle Database home combinations.

3. Question 3 · 1

   Application PDBs, SALES_APP1 and SALES_APP2, must be created and they must access common tables of the SALES_APP application. Examine these steps: 1. Install the SALES_APP application, including the common tables, in the application root. 2. Install the SALES_APP application in the application root and the common tables in both the CDB root and the application root. 3. Create an application seed. 4. Install the SALES_APP application in the application seed. 5. Create the SALES_APP1 and SALES_APP2 application PDBs. 6. Sync the SALES_APP1 and SALES_APP2 application PDBs with the application root. 7. Sync the SALES_APP1 and SALES_APP2 application PDBs with the application seed. 8. Sync the application seed with the application root. Which are the minimum required steps in the correct sequence?

   Choose one answer.

   • 3, 4, 1, 6, 8
   • 2, 5, 6
   • 1, 5, 6
   • 1, 3, 5, 6, 7
   • 1, 3, 5, 7

4. Question 4 · 1

   Which two are prerequisites for using FLASHBACK TABLE? (Choose two.)

   Choose all answers that apply.

   • A table's constraints must be disabled before issuing the flashback.
   • The FLASHBACK ANY TABLE system privilege or the FLASHBACK object privilege must be granted to the user performing the flashback.
   • A table's indexes must be set to unusable before issuing the flashback.
   • Row Movement must be enabled on the table being flashed back.
   • The FLASHBACK ANY TABLE system privilege or the FLASHBACK object privilege must be granted to the table owner.

5. Question 5 · 1

   Which two are true about RMAN Multisection backups when a very large data file is divided into four sections? (Choose two.)

   Choose all answers that apply.

   • Each of the file sections must be processed serially.
   • The four sections can be created serially.
   • The four sections must be image copies.
   • The four sections can be created in parallel.
   • The four sections must be contained in backup sets.

6. Question 6 · 1

   Which three are true about the Oracle Optimizer? (Choose three.)

   Choose all answers that apply.

   • It obeys all hints.
   • It considers the filters in WHERE clauses when generating execution plans for SQL statements.
   • It can re-optimize execution plans after previous executions detect suboptimal plans.
   • It considers object statistics when generating execution plans for SQL statements.
   • It updates stale object statistics in the Data Dictionary.
   • It can only use SQL Plan Directives tied to the SQL statement for which a plan is being generated.

7. Question 7 · 1

   RMAN has just been connected to a target database and the recovery catalog database. In which two cases would an automatic full resynchronization occur between this target database's control file and the RMAN recovery catalog? (Choose two.)

   Choose all answers that apply.

   • when control file metadata for archive log backups or image copies has been overwritten in the target database's control file due to being older than CONTROL_FILE_RECORD_KEEP_TIME
   • when control file metadata for data file backups or image copies has been overwritten in the target database's control file due to being older than CONTROL_FILE_RECORD_KEEP_TIME
   • when a new tablespace is added to a registered target database
   • when a backup of the current control file is created
   • when the target is first registered

8. Question 8 · 1

   You plan to perform cross-platform PDB transport using XTTS. Which two are true? (Choose two.)

   Choose all answers that apply.

   • A backup of the PDB must exist, taken using the BACKUP command with the TO PLATFORM clause.
   • The source PDB must be in MOUNT state.
   • The source PDB must not be an application root.
   • The source PDB can be in MOUNT or OPEN state.
   • The source and target platforms must have the same endianness.
   • Automatic conversion of endianness occurs.

9. Question 9 · 1

   Which three true about recovering tables using RMAN? (Choose three.)

   Choose all answers that apply.

   • RMAN can recover tables in the SYSAUX tablespace.
   • RMAN can recover tables owned by the SYS user.
   • RMAN can recover tables in the SYSTEM tablespace.
   • RMAN always uses an auxiliary instance.
   • RMAN can recover tables in a standby database.
   • RMAN can recover a table after a DDL operation has altered the table structure.
   • RMAN can recover tables owed by the SYSTEM user.

10. Question 10 · 1

    Which operating system group is NOT needed to perform an Oracle Database installation?

    Choose one answer.

    • OSASM
    • OSKMDBA
    • OSDBA
    • OSOPER
    • OSRACDBA

11. Question 11 · 1

    You want to transport the UNIVERSITY tablespace from one database to another. The UNIVERSITY tablespace is currently open read/write. The source and destination platforms have the same endian format. Examine this list of steps: 1. Make the UNIVERSITY tablespace read-only on the source system. 2. Export the UNIVERSITY tablespace metadata using EXPDP. 3. Create a cross-platform backup set from the UNIVERSITY tablespace on the source system, using an RMAN command that includes the DATAPUMP clause. 4. Copy the cross-platform backup sets to the destination system. 5. Copy the Data Pump dump set from the source to the destination system. 6. Restore the cross-platform backup set on the destination system using an RMAN command that includes the DATAPUMP clause. 7. Import the UNIVERSITY tablespace metadata using IMPDP. 8. Make the UNIVERSITY tablespace read/write on the destination system. Which are the minimum number of steps required, in the correct order, to transport the UNIVERSITY tablespace?

    Choose one answer.

    • 1, 3, 4, 6, 8
    • 3, 4, 6
    • 1, 2, 3, 4, 5, 6, 7, 8
    • 2, 3, 4, 5, 6, 7

12. Question 12 · 1

    Which two are true about the character sets used in an Oracle database? (Choose two.)

    Choose all answers that apply.

    • Single-byte character sets provide better performance than multibyte character sets.
    • Unicode enables information from any language to be stored using a single character set.
    • Unicode is the only supported character set for Oracle databases created using Database Configuration Assistant (DBCA).
    • Single-byte character sets always use 7-bit encoding schemes.
    • Multibyte character sets allow more efficient space utilization than single byte character sets.
    • Single-byte character sets always use 8-bit encoding schemes.

13. Question 13 · 1

    Which three are true about a whole database backup? (Choose three.)

    Choose all answers that apply.

    • It can consist of either backup sets or image copies.
    • It is the only possible backup type for a database in NOARCHIVELOG mode.
    • It can be consistent.
    • It can be created only by using RMAN.
    • It can be inconsistent.
    • It always includes all data files, the current control file, the server parameter file, and archived redo logs.

14. Question 14 · 1

    Which three are true about SGA memory management in a multitenant database? (Choose three.)

    Choose all answers that apply.

    • Setting DB_CACHE_SIZE for a PDB guarantees a minimum amount of Database Buffer Cache memory for that PDB.
    • The SHARED_POOL_SIZE setting for a PDB can be up to 80% of the SHARED_POOL_SIZE setting of the root container.
    • Setting SHARED_POOL_SIZE for a PDB guarantees a minimum amount of Shared Pool memory for that PDB.
    • The SGA_TARGET setting for a PDB cannot exceed 50% of the SGA_TARGET value of the root container.
    • Setting SGA_TARGET for a PDB guarantees a minimum amount of SGA memory for that PDB.
    • SGA_MIN_SIZE cannot be set for a PDB.

15. Question 15 · 1

    Which three actions will add a resource to an Oracle Restart configuration? (Choose three.)

    Choose all answers that apply.

    • creating an Oracle Database service by modifying the SERVICE_NAMES parameter
    • creating a disk group using the CREATE DISKGROUP SQL statement
    • creating a database using the CREATE DATABASE SQL statement
    • creating a database service using DBMS_SERVICE.CREATE_SERVICE
    • creating a database service using Oracle Database Configuration Assistant (DBCA)
    • creating an Oracle Automatic Storage Management (ASM) instance with ASM Configuration Assistant (ASMCA)

Paid access to all 156 questions

Each purchase applies to this certification. Prices are one-time payments, not monthly subscriptions.