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2021 Apr 1Z0-052 Study Guide Questions:

Q121. View the Exhibit and examine the undo tablespace attributes. Your database instance is experiencing a large volume of transactions from non-DBA users in the last one hour. The undo tablespace NDOTBS1 is full with transactions and no transaction was committed more than one hour ago. The database has two more undo tablespaces.

What happens to the new DML operations in this scenario?


A. The DML commands will fail

B. The undo data generated by the DML is stored in one of the two other undo tablespace

C. The undo data generated by the DML will overwrite the extents that contain committed undo data

D. The undo data generated by the DML is stored in the SYSTEM undo segment of the SYSTEM tablespace

Answer: A

Q122. View the Exhibit and note the files available in the $ORACLE_HOME/dbs folder. The ASM instance is already running. You used the following steps to start the database instance and open the database:

A. init.ora

B. spfile.ora

C. initorcl.ora

D. spfile+ASM.ora

Answer: B

Q123. The HR user creates a stand-alone procedure as follows and grants the EXECUTE privilege on the procedure to many database users:

CREATE OR REPLACE PROCEDURE create_dept ( v_deptno NUMBER, v_dname VARCHAR2,

v_mgr NUMBER, v_loc NUMBER)


INSERT INTO hr.departments VALUES (v_deptno, v_dname, v_mgr, v_loc);


The users having permission to execute the procedure are able to insert records into the

DEPARTMENTS table even though they do not have the INSERT privilege on the table. You want only those users who have privileges on the DEPARTMENTS table to be able to execute the procedure successfully.

What would you suggest to the PL/SQL developers to achieve this?

A. Create the procedure with definer's right.

B. Create the procedure with invoker's right.

C. Grant the EXECUTE privilege with GRANT OPTION on the procedure to selected users.

D. Create the procedure as part of a PL/SQL package and grant the EXECUTE privilege on the package to selected users.

Answer: B

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Q124. The session of user SCOTT receives the following error after executing an UPDATE command on the EMP table:

ERROR at line 1:

ORA-00060: deadlock detected while waiting for resource

On investigation, you find that a session opened by user JIM has a transaction that caused the deadlock.

Which two statements are true regarding the session of SCOTT in this scenario? (Choose two.)

A. The session is terminated after receiving the error and JIM can continue with his transaction.

B. SCOTT should perform a COMMIT or ROLLBACK to allow JIM to continue with his transaction.

C. The session is rolled back after receiving the error and JIM can continue with his transaction.

D. SCOTT has to reexecute the last command in the transaction after he commits the transaction.

Answer: BD

Q125. User A executes the following command to drop a large table in your database:


While the drop table operation is in progress; user B executes the following command on the same table;

SQL> DELETE FROM trans WHERE tr_type='SL'

Which statement is true regarding the DELETE command?

A. It fails to delete the records because the records are locked in the SHARE mode

B. It deletes the rows successfully because the table is locked in the SHARE mod

C. It fails to delete the records because the table is locked in EXCLUSIVE mode

D. It deletes the rows successfully because the table is locked in SHARE ROW EXCLUSIVE mode

Answer: C

Q126. View the Exhibit to examine the output of the DBA_OUTSTANDING_ALERTS view.

After 30 minutes, you executed the following command:

SQL> SELECT reason,metric_value FROM dba_outstanding_alerts; 

REASON                        METRIC_VALUE 

------------------------------                ---------------------- 

Tablespace [TEST] is [28 perce nt] full     28.125 

What could be the reason for the elimination of the other rows in the output?


A. An Automatic Workload Repository snapshot has been taken recently.

B. The non-threshold-based alerts are transferred to DBA_ALERT_HISTORY.

C. The threshold alerts conditions are cleared and the alerts are transferred to BA_ALERT_HISTORY.

D. The threshold alerts related to database metrics are permanently stored in DBA_ALERT_HISTORY but not the threshold alerts related to instance metrics.

Answer: C

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Q127. For which database operation would you need the database to be in the MOUNT state?

A. Renaming the control files

B. Re-creating the control files

C. Dropping a user in your database

D. Dropping a tablespace in your database

E. Configuring the database instance to operate in the ARCHIVELOG or NOARCHIVELOG modes

Answer: E

Q128. In which situations does the Oracle Data Pump use external tables and not the direct path load while exporting a table? (Choose all that apply.)

A. if a table is not in a cluster

B. if a table has an active trigger

C. if a table has an encrypted column

D. if a table has a column of data type LONG defined on it

E. if a table has a referential integrity constraint defined on it

Answer: BCE

Q129. You want to enable archiving on your database. Presently, the database is running in NOARCHIVELOG mode.

Given below are the steps to accomplish the task in random order:

1. Shut down the instance.

2. Execute the ALTER DATABASE ARCHIVELOG command.

3. Start up the instance and mount the database.

4. Set the DB_RECOVERY_FILE_DEST initialization parameter to $ORACLE_HOME/dest_1.

5. Open the database.

Which is the correct sequence of steps for accomplishing the task?

A. 4, 1, 3, 2, 5

B. 1, 3, 4, 5, 2

C. 1, 3, 2, 5; 4 not required

D. 4, 1, 5, 2; 3 not required

E. 1, 3, 4, 5; 2 not required

Answer: C

Q130. You execute this command to drop the ITEM table, which has the primary key referred in the ORDERS table:


Which two statements are true about the effect of the command? (Choose two.)

A. No flashback is possible to bring back the ITEM table.

B. The ORDERS table is dropped along with the ITEM table.

C. The dependent referential integrity constraints in the ORDERS table are disabled.

D. The dependent referential integrity constraints in the ORDERS table are removed.

E. The table definition of the ITEM table and associated indexes are placed in the recycle bin.

Answer: AD