Tag: technology

Quizzes (307) Questions (36705)

Questions Related to technology

Multiple choice technology databases

The ORDERS table has a constant transaction load 24 hours a day, so down time is not allowed. The index become fragmented. Whic statment is true ?

  1. The index need to be dropped, and then re-created.

  2. The resolution of index fragmentation depends on the type of index.

  3. The index can be rebuilt while users continue working on the table.

  4. The fragmented can be ignored because Oracle resolve index fragmentation by means of a freelist.

  5. The index can be rebuilt, but users will not have access to the index during this time.
Reveal answer Fill a bubble to check yourself
C Correct answer
Full explanation
Multiple choice technology databases

You omit the UNDO tablespace clause in your CREATE DATABASE statment. The UNDO_MANAGEMENT parameter is set to AUTO. What is the result of your CREATE DATABASE statement ?

  1. The oracle server creates no undo tablespace.

  2. The oracle server creates an undo segment in the system tablespace.

  3. The oracle server cerates one undo tablespace with the name SYS_UNDOTBS.

  4. Database creation fails because you did not specify an undo tablespace on the create database statment.
Reveal answer Fill a bubble to check yourself
C Correct answer
Full explanation
Multiple choice technology databases

John has created a procedure named SALARY_CALC. Which SQL query allow him to view text of procedure?

  1. SELECT text FROM user_source WHERE name = 'SALARY_CALC';

  2. SELECT * FROM user_source WHERE name='SALARY_CALC';

  3. SELECT * FROM user_objects WHERE object_name='SALARY_CALC';

  4. SELECT * FROM user_procedures WHERE object_name='SALARY_CALC';

  5. SELECT text FROM user_source WHERE name='SALARY_CALC' and owner='JOHN'
Reveal answer Fill a bubble to check yourself
A Correct answer
Full explanation
Multiple choice technology databases

The employees table is stored in the SAMPLE tablespace. The corresponding IPK_EMP index for the EMPLOYEES table's primary key is stored in INDX tablespace. Out of 12 partitions, only partition P1 of the SALES table is stored in the SAMPLE tablespace. Which object will be exported by this command ? exp system/manager tablespace=SAMPLE

  1. Only the EMPLOYEES table.

  2. Only the EMPLOYEES table and its corresponding primary key index.

  3. The EMPLOYEES table and partition P1.

  4. The EMPLOYEES table, IPK_EMP index, and the SALES table.
Reveal answer Fill a bubble to check yourself
D Correct answer
Full explanation
Multiple choice technology databases

You want to drop the TBSI tablespace from your database. You also want to delete corresponding data files automatically, and not have to do it manually. What should you do ?

  1. User the DROP DATAFILE command.

  2. Use the DROP TABLESPACE command.

  3. Ensure that all database files are Oracle Managed Files(OMF) before using the DROP TABLESPACE command.

  4. Ensure that the DB_FILE_CREATE_DEST initialization parameter is set before using the DROP TABLESPACE command.
Reveal answer Fill a bubble to check yourself
B Correct answer
Full explanation
Multiple choice technology databases

Consider this syntax MERGE INTO t1 USING t2 ON (join predicate) .... What does the MERGE syntax do ?

  1. It performs a merge join of the row from T2 only if it does'nt exist in the T1 table.

  2. It creates a natural join of table T1 and T2 for all columns that have the same name.

  3. It creates a Cartesian prodcut of table T1 and table T2 for all columns that have the same name.

  4. For each row from T2, it updates the row if it exists witin table T1, otherwise it inserts the row into T1.
Reveal answer Fill a bubble to check yourself
D Correct answer
Full explanation
Multiple choice technology databases

Examine the statement : DROP TABLESPACE IND2 INCLUDING CONTENTS AND DATAFILES; What is the result of the statement?

  1. The contents and data files belonging to the IND2 tablespace are dropped.

  2. The statement will only succeed if the IND2 tablespace was built using Oracle-Managed Files (OMF) data files.

  3. The statement will only succeed if the data files belonging to the IND2 tablespace are Oracle Managed Files (OMF) or of the database was created using OMF.

  4. The contents of the tablespace are dropped along with all its data files except those identical with Oracle-Managed Files (OMF) naming convention.
Reveal answer Fill a bubble to check yourself
A Correct answer
Full explanation
Multiple choice technology databases

A user is running a long update batch file. Many tables are updated and all the statements are in one transaction. Before the process is finished, the user machine lost power. When the user calls you, what should you do as DBA?

  1. Do nothing, the PMON process handles everything.

  2. Shut down the database and restore all the tables the user was updating.

  3. Log in as DBA, clean up the partial updates in those tables, and do another manual backup.

  4. Use LogMiner to find out which records are changed based on the user’s ID, then roll back all those changes.
Reveal answer Fill a bubble to check yourself
A Correct answer
Full explanation
Multiple choice technology databases

Your database is running in NOARCHIVELOG mode. Every night there is a backup taken using RMAN. During your startup this morning you received an error regarding DISK 3 on your server.This is the location of your data file for the SYSTEM tablespace. Which option is open to you?

  1. The data file needs to be restored by using operating system commands, because a data file movement must take place, and then the database can be recovered from RMAN.

  2. The data file needs to be restored by using operating system commands, since a data file movement must take place, and then the database must be recovered manually.

  3. From RMAN you can issue the commands RESTORE and RECOVER. RMAN automatically restores the data file on DISK 3 to another disk, based upon utilization statistics.

  4. From RMAN you can issue a SET NEWNAME command to update the data file location information in the control file, and then issue the RESTORE and RECOVER commands to recover the database.
Reveal answer Fill a bubble to check yourself
D Correct answer
Full explanation