Free Access Oracle.1Z0-082.v2023-08-24.q111 Practice Test (Page 5)

Question 16

Which two statements are true about the DUAL table? (Choose two.)

A.It can be accessed only by the SYS user

B.It consists of a single row and single column of VARCHAR2 data type

C.It can display multiple rows but only a single column

D.It can be used to display only constants or pseudo columns

E.It can be accessed by any user who has the SELECT privilege in any schema

F.It can display multiple rows and columns

Question 17

Which two statements are true about the PMON background process? (Choose two.)

A.It registers database services with all local and remote listeners known to the database instance

B.It frees resources held by abnormally terminated processes

C.It records checkpoint information in the control file

D.It frees unused temporary segments

E.It kills sessions that exceed idle time

Question 18

Which two statements are true about trace files produced by the Oracle Database server? (Choose two.)

A.They can be written by server processes

B.Trace files are written to the Fast Recovery Area (FRA)

C.They can be written by background processes

D.All trace files contain error information that require contacting Oracle Support

E.Trace file names are based on the database name concatenated with a sequential number

Question 19

In the ORCL database, UNDOTBS1 is the active undo tablespace with these properties:
1. A size of 100 MB
2. AUTOEXTEND is off
3. UNDO_RETENTION is set to 15 minutes
4. It has RETENTION GUARANTEE
UNDOTBS1 fills with uncommitted undo 10 minutes after the database opens.
What will happen when the next update is attempted by any transaction?

A.It succeeds and the generated undo is stored in SYSTEM.

B.It fails and returns the error message "ORA-30036: unable to extend segment by 8 in undo tablespace
'UNDOTBS1' ".

C.It succeeds and the least recently written undo block of UNDOTBS1 is overwritten by the generated undo.

D.It succeeds and the generated undo is stored in SYSAUX.

E.It succeeds and the least recently read undo block of UNDOTBS1 is overwritten by the generated undo.

Question 20

Which three statements are true about inner and outer joins? (Choose three.)

A.A full outer join returns matched and unmatched rows

B.An inner join returns matched rows

C.A full outer join must use Oracle syntax

D.Outer joins can only be used between two tables per query

E.A left or right outer join returns only unmatched rows

F.Outer joins can be used when there are multiple join conditions on two tables

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Question 16

Question 17

Question 18

Question 19

Question 20

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