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2021 Feb 1z0-053 exam:

Q11. Examine the output of the query that you executed to list the objects in the recycle bin:

You verified that no table named SALES_TAB exists in the schema. Then you executed the following command to purge the objects in the recycle bin:

SQL> PURGE TABLE sales_tab;

What would be the outcome of this command?

A. All three tables in the recycle bin are purged

B. Only the table with the oldest DROPSCN is purged

C. The command returns an error because multiple entries with the same name exist in the recycle bin

D. Only the table with the latest DROPSCN is purged

Answer: B

Q12. Identify the persistent configuration setting for the target database that can be set for the backup by using RMAN. (Choose all that apply.)

A. Backup retention policy

B. Default backup device type

C. Default destinations for backups

D. Multiple backup device types for single backup

E. Default section size for backups

Answer: ABC

Q13. Which files will you need to perform a full recovery of a database backed up in NOARCHIVELOG mode? (Choose all that apply.)

A. Database datafiles

B. Control files

C. Archived redo logs

D. Online redo logs

E. Flashback logs

Answer: ABD

Q14. Which of the following would be affected by setting NLS_LENGTH_SEMANTICS=CHAR?

A. All objects in the database

B. Tables owned by SYS and SYSTEM

C. Data dictionary tables

D. NCHAR columns

E. CHAR columns

Answer: E

Q15. The database Is configured in ARCHIVELOG mode. The database needs to be up 24 X 7. You want to perform user managed backup for the data files of the HR_DATA tablespace.

To accomplish the task, you issued the following command:


Which two statements are true in this scenario? (Choose two.)

A. No transaction on the tablespace is allowed but you can perform queries.

B. The tablespace will automatically come out of backup mode when the file copy is complete.

C. The checkpoint change number is frozen in headers of the data files until the file is removed from backup mode.

D. The database writes the before image of an entire block to the redo stream before modifying.block tor the first time.

Answer: AC

Updated ocp exam 1z0-053:

Q16. View the Exhibit and examine the output of the query in different times when the following command runs in an RMAN sessions: RMAN> BACKUP DATABASE FILESPERSET 2;

The database has seven data files. Why is the %_COMPLETE refreshed to 13.59 in the third output after reaching 88.77?


A. Because the progress is reported for each data file

B. Because the progress is reported for each backup set

C. Because other RMAN sessions have issued the same BACKUP command

D. Because new data files have been added to the database while the RMAN backup is in progress

Answer: B

Q17. You are managing the APPPROD database as a DBA which is not using the Oracle-managed files. You plan to duplicate this database in the same system with the name DUPDB.You want to create the same directory structure for duplicate database files as of the target database.

You executed the following RMAN commands:




TO dupdb





What are the implications of this command?

A. It creates database files for the duplicate database under the Oracle base with a different directory for the duplicate database.

B. It overwrites data files of the target database because a different location for data files is not mentioned for the duplicate database.

C. It creates database files for the duplicate database under the same Oracle home as that of the target database with the same directory structure.

D. It creates database files for the duplicate database under the same Oracle home as that of the target but with a different directory for the duplicate database.

Answer: B

Q18. You have discovered that one of three control files has been lost. What steps would you follow to recover that control file?

a. Shut down the database.

b. Restore a control-file copy from backup media.

c. Use the create control file command to create a new control file.

d. Copy the backup control file into place.

e. Create a new copy of the control file from one of the surviving control files.

f. Recover the database using the recover database using backup controlfile command.

g. Start up the database.

A. a, b, f, g

B. c, f, g

C. a, d, f, g

D. a, f, g

E. a, e, g

Answer: E

Q19. You have backed up your database using image copies. You have lost the SYSTEM tablespace and need to restart your database as quickly as possible. What is the correct solution? 

A. Restore the SYSTEM tablespace from the last backup set and then recover the database.

B. Restore the SYSTEM tablespace image copy using the restore command and then restore the database.

C. Use the switch datafile command to instantly switch to the datafile copy, recover the tablespace, and open the database.

D. The database is not recoverable in this situation with image copies.

E. Manually copy the datafile image copy to the correct location and then manually restore the database from SQL*Plus.

Answer: C

Q20. Which of the following can be used in conjunction with a Flashback Versions Query to filter the results? (Choose all that apply.)

A. A range of SCN values

B. A list of SCN values

C. A starting and ending timestamp

D. Minimum and maximum sequence values

E. A list of sequence values

Answer: AC