1Z0-052 | 10 Tips For Updated 1Z0-052 exam
Q1. You configured the Flash Recovery Area (FRA) for your database. The database instance is running in ARCHIVELOG mode. The default location for the archived redo log files is the Flash Recovery Area. Which two files are removed automatically if the space is required in the FRA as per the retention policy? (Choose two.)
A. Flashback log files
B. Backups that have become obsolete
C. User managed backups of the data files and control files
D. Archived redo log files that have multiple copies in a different archive location and not backed up
Answer: AB
Q2. A database user SMITH tries to query the V$SESSION view and fails to access it as follows:
Which are the two possible solutions to enable SMITH to query the data in V$SESSION? (Choose two.)
A. granting SELECT privilege to SMITH on V$SESSION
B. granting SELECT privilege to SMITH on V_$SESSION
C. asking the user SMITH to run the catalog.sql script
D. granting SELECT privilege to SMITH on V$FIXED_TABLES
E. setting the O7_DICTIONARY_ACCESSIBILITY parameter to TRUE
F. creating a view based on V$SESSION and granting SELECT privilege to SMITH on the view that was created
Answer: BF
Q3. Identify two situations in which the block header grows in a data block. (Choose two.)
A. When row directories need more row entries
B. When there is row migration in the data block
C. When there is an increase in the PCTFREE value for the data block
D. When more transaction slots are required than are initially configured
Answer: AD
Q4. You have recently collected statistics on certain objects of a schema in your database. But you observe suboptimal execution plans for the queries on these objects after two days of statistics collection. The optimizer statistics retention period is set to its default value.
Which action would help to use the previous set of statistics on the objects?
A. Restore statistics from statistics history.
B. Reduce the optimizer statistics retention period by 2 days.
C. Set the OPTIMIZER_PENDING_STATISTICS parameter to TRUE.
D. Reduce the Automatic Workload Repository (AWR) retention period by 2 days.
Answer: A
Q5. Identify two situations in which you can use Data Recovery Advisor for recovery. (Choose two.)
A. The database files are corrupted when the database is open
B. The user has dropped an important table that needs to be recovered
C. The archived redo log files are missing for which the backup is not available
D. The database is not opening because the required database files are missing
Answer: AD
Q6. You want to configure and schedule offline database backups to run automatically.
Which tool or utility would you use to achieve this?
A. The XML script
B. The PL/SQL script
C. The DBMS_SCHEDULER package
D. Enterprise Manager to schedule the backup
Answer: D
Q7. You are working on a database that must be functioning 24 hours a day, 7 days a week. The database is configured in ARCHIVELOG mode.
Which two options do you have for performing user-managed backups? (Choose two.)
A. You can perform consistent backups only.
B. You can perform a complete database backup without shutting down the database instance.
C. You can back up data files only when all data files have the same SCN recorded in the control file.
D. You can back up only those data files whose headers are frozen by using ALTER TABLESPACE BEGIN BACKUP or ALTER DATABASE BEGIN BACKUP commands.
Answer: BD
Q8. View the Exhibit to examine the error that occurred during the database startup.
You opened an RMAN session for the database. To repair the failure, you executed the following command as the first RMAN command:
RMAN> REPAIR FAILURE;
Which statement describes the consequence of this command?
A. The command performs the recovery and closes the failure
B. The command only displays the advice and the RMAN script required for recovery
C. The command executes the RMAN script to repair the failure and remove the entry from the Automatic Diagnostic Repository (ADR)
D. The command produces an error because the ADVISE FAILURE command was not executed before the REPAIR FAILURE command
Answer: D
Q9. Which two activities are NOT supported by the Data Recovery Advisor (DRA)? (Choose two.)
A. Recover from failures in the RAC environment.
B. Diagnose and repair a data file corruption online.
C. Diagnose and repair a data file corruption offline.
D. Diagnose and repair failures on a standby database.
Answer: AD
Q10. Which two statements are true regarding B-tree index? (Choose two.)
A. The leaf blocks in the index are doubly linked.
B. The leaf node stores a bitmap for each key value.
C. The rows with NULL value in key columns also have entries in the index.
D. The deletion of a row from the table causes a logical deletion in index leaf block and the space becomes available for the new leaf entry.
Answer: AD