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2016 May 1Z0-052 Study Guide Questions:

Q91. Which two statements are true regarding Oracle Data Pump? (Choose two.)

A. EXPDP and IMPDP are the client components of Oracle Data Pump

B. DBMS_DATAPUMP PL/SQL packages can be used indedendently of the DATA Pump clients

C. Oracle Data Pump export and import operations can be performed only by users with the SYSDBA privilege

D. Oracle Data Pump imports can be done from the export files generated in the Original Export Release 9.x

E. EXPDP and IMPDP use the procedures provided by DBMS_METADATA to execute export and import commands

Answer: AB


Q92. You are working on an instance started using the SPFILE. You want to move the Flash Recovery Area of your database to a new location. You want the Flashback log files to be stored in the new location. Given below are the steps to accomplish the task in random order:

1) Shut down the instance.

2) Change the value of the DB_RECOVERY_FILE_DEST initialization parameter to a new value.

3) Execute the ALTER DATABASE FLASHBACK OFF command.

4) Start up the instance and mount the database.

5) Execute the ALTER DATABASE FLASHBACK ON command.

6) Open the database.

Select the correct order in which these tasks need to be performed.

A. 2, 1, 4, 3, 5, 6

B. 1, 4, 3, 2, 6, 5

C. 1, 4, 2, 6, 3, 5

D. 3, 2, 1, 4, 5, 6

Answer: A


Q93. Examine the following command that is used to create a table:


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

A. A CHECK constraint is created on the OID column

B. A NOT NULL constraint is created on the OID column

C. The ORDERS table is the only object created in the USERS tablespace

D. The ORDERS table and a unique index are created in the USERS tablespace

E. The ORDERS table is created in the USERS tablepsace and a unique index is created on the

OID column in the SYSTEM tablespace

Answer: BD


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Q94. Which statement is true about loading data using the conventional path of SQL*Loader?

A. Redo is not generated while performing conventional path loads

B. Only PRIMARY KEY, UNIQUE KEY and NOT NULL constraints are checked

C. No exclusive locks are acquired when the conventional path loads are performed

D. Instead of performing transactions, SQL*Loader directly writes data blocks to the data files

E. INSERT triggers are disabled before the conventional path load and reenabled at the end of the load

Answer: C


Q95. User SCOTT executes the following command on the EMP table but has not issued COMMIT, ROLLBACK, or any data definition language (DDL) command:

SQL> SELECT ename FROM emp

2 WHERE job='CLERK' FOR UPDATE OF empno;

SCOTT has opened another session to work with the database instance.

Which three operations would wait when issued in SCOTT's second session? (Choose three.)

A. LOCK TABLE emp IN SHARE MODE;

B. LOCK TABLE emp IN EXCLUSIVE MODE;

C. UPDATE emp SET sal=sal*1.2 WHERE job='MANAGER'

D. INSERT INTO emp(empno,ename) VALUES (1289,'Harry');

E. SELECT ename FROM emp WHERE job='CLERK' FOR UPDATE OF empno;

Answer: ABE


Q96. View the Exhibit to examine the output produced by the following query at three different times since the database instance started and has experienced workloads of different capacities:

SQL> SELECT substr(component, 0, 10) COMP, current_size CS, user_specified_size US

FROM v$memory_dynamic_components

WHERE current_size!=0;

What do you infer from this?

Exhibit:


A. The database instance is running with manual PGA management.

B. The database instance is running with manual shared memory management.

C. The database instance has the MEMORY_TARGET value set to a nonzero value.

D. All sessions are connected to the database instance in dedicated mode, and no RMAN or parallel query operations have been performed.

Answer: C


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Q97. Your database instance is currently configured to support 1,500 connections. The Web application that uses the database allows a large number of users to work with the database simultaneously.

Some users of the Web application do not interact with the server all the time. You want to increase the scalability by configuring the database instance to handle more connections. As a DBA, which configuration would you set to support more than 1,500 connections at a time?

A. You would configure more listeners for the database.

B. You would configure the database in shared server mode to use the connection pooling feature.

C. You would increase the value of the PGA_AGGREGATE_TARGET initialization parameter that assigns more session memory to users.

D. You would decrease the value of the PRIVATE_SGA resource limit in the profiles used by the users to accommodate more session information.

Answer: B


Q98. You executed the following command to perform a backup of the USERS tablespace:

SQL> ALTER TABLESPACE users BEGIN BACKUP;

ALTER TABLESPACE users BEGIN BACKUP

*

ERROR at line 1:

ORA-01123: cannot start online backup; media recovery not enabled

What could be the reason for this error?

A. The MTTR Advisor is disabled.

B. The database is in NOARCHIVELOG mode.

C. The tablespace is already in backup mode.

D. The Flash Recovery Area is not configured.

Answer: B


Q99. Examine the command:

SQL>DBMS_STATS.SET_TABLE_PREFS('SH','CUSTOMERS','PUBLISH','false');

Which statement describes the effect of the above command?

A. Automatic statistics collection is stopped for the CUSTOMERS table

B. Statistics for the CUSTOMERS table are locked and cannot be overwritten

C. Existing statistics for the CUSTOMERS table become unusable for the query optimizer

D. Subsequently, statistics gathered on the CUSTOMERS table are stored as pending statistics

Answer: D


Q100. You have set Tablespace Full Metrics Threshold values for the USERS tablespace as follows:

Warning (%): 90

Critical (%): 95

Which background process is responsible for issuing alerts when the threshold is crossed?

A. System monitor (SMON)

B. Process monitor (PMON)

C. Memory manager process (MMAN)

D. Manageability Monitor process (MMON)

Answer: D