Oracle OCP 1z0-053 2018年9月最新考过的题库分享-2

3.One of your databases has resumable space allocation enabled.

Which two conditions will suspend a session performing DML in that database instance?

A) A deadlock is detected.

B) A transaction reaches a tablespace space quota.

C) The DML affects objects in a tablespace that is going offline.

D) A transaction cannot allocate extents in a temporary segment.

E) Total undo space for a session exceeds the amount available.

BE#

 

5.Which two are true about automatic PGA memory management?

□     A) PGA_AGGREGATE_TARGET cannot be configured if SGA_TARGET is configured.

□     B) The PGA is auto-tuned whether or not PGA_AGGREGATE^TAKGET is explicitly set.

□     C) PGA_AGGREGATE_TARGET cannot be configured if MEMORY_TARGET is configured.

□     D) Memory is allocated separately for FGA_AGGREGATE_TARGET and SGA_TARGET.

□     E) PGA_AGGREGATE_TARGET always defaults to zero.

BD

 

6 .Examine these RMAN commands:

RMAN> CONFIGURE DEFAULT DEVICE TYPE TO disk;

RMAN> CONFIGURE DEVICE TYPE DISK BACKUP TYPE TO COPY;

RMAN> CONFIGURE CONTROLFILE AUTOBACKUP ON;

 

Your database uses an SPFILE.

You issued this command:

RMAN> BACKUP DATABASE PLUS ARCHIVELOG DELETE INPUT;

Which three actions will occur?

□     A) backup of the entire SPFILE

□     B) backup only of SPFILE content that has changed since the last backup

□     C) backup of online logs

□     D) backup of all used and unused blocks in all data files

□     E) backup of archived logs

□     H backup of all used blocks only, in all data files

ADE

 

7 .In which two situations must you open a database with RESETLOGS

□     A) after bringing a recovered user tablespace online

□     B)    after performing a database point-in-time recovery

□     C)   after recovering from the loss of a server parameter file

□     D)   after recovering from the loss of a CURRENT redo log group

□     E)    after recovering from the loss of an ACTIVE redo log group

BD

 

9.One of your database's is In ARCHIVE LOG mode.

You execute these commands:

CONFIGURE DEVICE TYPE DISK BACKUP TYPE TO COPY;

CONFIGURE CONTROLFILE AUTOBACKUP ON;

CONFIGURE BACKUP OPTIMIZATION ON;

BACKUP DATABASE;

What will the backup contain?

A) used blocks only from data files and the control file  

B) used and compressed blocks only from data files

C) all blocks from data files, the control file, the server parameter file (SPFILE), and archived redo log files

D) all blocks only from data files, the control file, and the server parameter file (SPFILE)

E) all blocks only from data files and the control file

D#

 

10.You have configured archive log destinations lot one of your databases.

Which two ensure log switching will only occui if archiving Is successful to at least two destinations?

A) Set the OPTIONAL attribute for LOG_ARCHIVE_DEST_n for the four destinations and set LOG_ARCHIVE_MIN_SUCCEED_DEST to 4

B) Set the MANDATORY attribute for LOG ARCHIVE DEST_n for any two destinations and set LOG_ARCHIVE_MIN_SUCCEED_DEST to 1.

C) Configure the flash recovery area and set the LOG_ARCHIVE_MIN_SUCCEED_DEST parameter to 2.

D) Set LOG_ARCHIVE_DEST and LOG_ARCHIVE_DUELEX_DEST to two chosen destinations and set LOGAKCHIVE MIN SUCCEED DEST to IXJ

E) Set the OPTIONAL attribute for LOG ARCHIVE DEST n for the four destinations and set LOG ARCHIVE MIN SUCCEED_DEST to 2.

BE

 

11. The BOOKINGS table contains online booking information. When a booking is confirmed, the details are transferred to an archival table BOOKINGS_HIST and deleted from the BOOKINGS table. Is no fixed time interval between each online booking and its confirmation. Because sufficient space is not always available from the delete operations, the high-water mark(HWM) is moved up and many rows are inserted below the HWM of the table.

 The BOOKINGS table has Automatic segments space management(ASSM) and row movement enabled. The table is accessible in 24x7 mode.

What is the most efficient method to reclaim the space released by the delete operations in the BOOKINGS table?

1. Move the BOOKINGS table to a different location by using the ALTER table … move command.
2. Shrink the bookings table by using the alter table … shrink space command.
3. Perform export,drop,and import operations on the bookings table sequentially.
4. Deallocate the space in the booking table by using the alter table... deallocate unused command.

  B

 

13 .In a database instance, the NLS_DATE_LANGUAGE parameter is set to AMERICAN.

On a client, the NLSLANG environmental variable is set to FRENCH_CANADA.WE8ISO8859P1.

A user starts a session on the client and issues these commands:

SQL> ALTER SESSION SET NLS LANGUAGE = GERMAN;

SQL> SELECT TO_CHAR(hire_date,’DD/MON/YYYY ' ,' nls_date_lanquage = ITALIAN’)

FROM employees;

What is the result?

A) The query displays    abbreviated  month    names   in    Canadian      English.

  B) The query displays    abbreviated  month    names   in    Canadian      French.

C) The query displays    abbreviated  month    names   in    German.

  D) The query displays    abbreviated  month    names   in    Italian.

E) The query displays abbreviated month names in US English,

D

 

15   .You plan to use the Flashback Drop feature to recover a dropped table SALES_EMP. NO other table with the same name exists in the schema.

You query RECYCLEBIN and find multiple entries for the SALFS EMP table as follows:

SQL> SELECT object_name, original name, droptime FROM recyclebin;

QBJECTNAME                    ORIGINAL_NAME          DROPTIME

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

BINS/m0DrBV9RFGOAA53dC+FPw=$0  SALES EMP           2007-12-07:11:08:55

BINS2DeIssLeQTqgH/nSQRm2JO=50    SALES_EMP        2007-12-07:11:11:38

BIN$OuqroHodQy6ouDtaAr-XOVw=$0  SALES EMP            2007-12-07:11: 08 :18

You then issue this statement to recover the table:

SQL> FLASHBACK TABLE sales_emp TO BEFORE DROP;

What would be the outcome of the preceding statement?

A) It retrieves the latest version of the table from the recycle bin.

B) It returns an error because the table name is not specified as per the names in the OBJECT_NAME column

C) It retrieves the version of the table for which undo information is available.

D) It retrieves the oldest version of the table from the recycle bin.

A

17.A database is running In ARCHIVELOG mode.

You took a binary backup of the control file.

Which two statements are true about recovery using the backup control file?

A) You must always RECOVER the database after restoring a backup control file, even if no data files have been restored

B) You can only restore the control file to its original location.

C) You can perform only an incomplete recovery with a backup control file even If all the online redo logs and archived logs are available.

D) You must open the database RESETLOGS after recovery using a backup control file.

E) You can only restore the control file to the default location.

AD

 

20.Examine this recovery manager(RMAN) command:

RUN{

SET UNTIL TIME '2008-01-14:21:59:0’;

RESTORE DATABASE;

RECOVER DATABASE;

}

The time specified Is earlier than the most recent backup taken before the recovery, but older backups also exist.

Which two actions will occur?

A) All data files and the control file from the most recent backup prior to the recovery will be restored.

B) All data files from the most recent backup prior to SET TIME will be restored.

C) All data files from the most recent backup will be restored.

D) Only the SYSTEM data file from the most recent backup will be restored.

E) All redo log data up to the set time will be applied.

F) All (data flies, redo logs, and control files from the most recent backup prior to the recovery will be restored.

BE

21.View the Exhibit and examine the results of two queries executed In two user sessions from the same client. What accounts for the formatting differences?

A) The NLS LANG environment variable was changed on the database host before starting the second session.

B) The second session connected via the listener but the first session used a local connection.

C) The database character set was changed before executing the second query.

D) The NLS_LANG environment variable was changed on the client before starting the second session.

E) The database national character set was changed before executing the second query.

 D

 

27.Which two are true about a fast incremental backup?

1. It requires the fast recovery area to be configured.
2. It uses a block change tracking file when the incremental level is greater than 0.
3. It can be enabled only for the whole database.
4. It can be performed for both cumulative and differential incremental backups.
5. It can be performed for both level 0 and level 1 incremental backups.

 BD

30 . Note these parameter settings in your database:

   SGA_MAX_SIZE=1024M

   SGA_TARGET=700M

   DB_8K_CACHE_SIZE=12M

   LOG_BUFFER=200M

You issued this command to increase the value of DB_8K_CACHE_SIZE:

SQL> ALTER SYSTEM SET DB_8K_CACHE_SIZE=140M;

What will happen?

1. It will be successful only if the memory is available from the autotuned components of the SGA.
2. It will fail because an increase in DB_8K_cache_size cannot be accommodated within SGA_TARGET.
3. It will fail because an increase in DB_8K_CACHE_SIZE cannot be accommodated within SGA_MAX_SIZE.
4. It will fail because the DB_8K_CACHE_SIZE parameter cannot be changed dynamically.

A

35.How can a DBA control a job's resource utilization using Oracle Job Scheduler?

A) by using a file watcher to associate the job with a resource plan

B) by using a job class to associate the job with a resource consumer group that is managed by the current resource manager plan

C) by using a job chain to associate the Job with a resource plan

D) by using a job anay to associate the job with a resource plan

E) by using a window to associate the job with a resource consumer group that is managed by the current resource manager plan

B#

36.A database is configured in ARCHIVELOG mode.

You issued this RMAN command to take backup to media:

BACKUP DATABASE

PLUS ARCHIVELOG

TAG TESTDB

KEEP UNTIL ’SYSDATE+1'

RESTORE POINT TESTDB06;

Which two statements are true?

□     A) Online logs are backed up.

□     B) Archived logs are backed up if they have not yet been backed up.

□     C) The backup is always automatically deleted after one day.

□     D) The backup is categorized as OBSOLETE after one day.

□     E) The backup is categorized as EXPIRED after one day.

DB