Valid 1Z0-082 Exam Q&A PDF 1Z0-082 Dump is Ready (Updated 118 Questions)
Exam Questions and Answers for 1Z0-082 Study Guide
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NEW QUESTION 32
You need to calculate the number of days from 1st January 2019 until today.
Dates are stored in the default format of DD-MON-RR.
Which two queries give the required output? (Choose two.)
- A. SELECT ROUND(SYSDATE - TO_DATE('01/JANUARY/2019')) FROM DUAL;
- B. SELECT TO_CHAR(SYSDATE, 'DD-MON-YYYY') - '01-JAN-2019' FROM DUAL;
- C. SELECT TO_DATE(SYSDATE, 'DD/MONTH/YYYY') - '01/JANUARY/2019' FROM DUAL;
- D. SELECT ROUND(SYSDATE - '01-JAN-2019') FROM DUAL;
- E. SELECT SYSDATE - TO_DATE('01-JANUARY-2019') FROM DUAL;
Answer: B,D
NEW QUESTION 33
What two are benefits of Data Pump? (Choose two.)
- A. It makes use of client system resources.
- B. It can restart failed export jobs.
- C. It can export data into sequential media, such as tapes.
- D. It represents database metadata information as DDL statements in the dump file.
- E. It can execute in parallel.
Answer: B,E
NEW QUESTION 34
The INVOICE table has a QTY_SOLD column of data type NUMBER and an INVOICE_DATE column of data type DATE.
NLS_DATE_FORMAT is set to DD-MON-RR.
Which two are true about data type conversions involving these columns in query expressions?
(Choose two.)
- A. qty_sold = `0554982' uses implicit conversion
- B. invoie_date > '01-02-2019' : uses implicit conversion
- C. invoice_date = '15-march-2019' : uses implicit conversion
- D. CONCAT (qty_sold, invoice_date) : requires explicit conversion
- E. qty_sold BETWEEN `101' AND '110' : uses implicit conversion
Answer: C,E
NEW QUESTION 35
Which three statements are true about inner and outer joins? (Choose three.)
- A. Outer joins can be used when there are multiple join conditions on two tables
- B. A full outer join returns matched and unmatched rows
- C. A left or right outer join returns only unmatched rows
- D. A full outer join must use Oracle syntax
- E. An inner join returns matched rows
- F. Outer joins can only be used between two tables per query
Answer: B,C,E
Explanation:
https://www.studytonight.com/dbms/joining-in-sql.php
NEW QUESTION 36
Which two statements are true about views used for viewing tablespace and datafile information? (Choose two.)
- A. A datafile can be renamed when the database is in MOUNT state and the new file name is displayed when querying DBA_DATA_FILES after the database is opened
- B. V$TABLESPACE displays information that is contained in the controlfile about tablespaces
- C. Tablespace free space can be viewed in V$TABLESPACE
- D. Tablespace free space can be viewed in DBA_TABLESPACES
- E. V$TABLESPACE displays information about tablespaces contained in the data dictionary
Answer: A,B
NEW QUESTION 37
Which two statements are true about the DUAL table? (Choose two.)
- A. It can be accessed only by the SYS user
- B. It can be used to display only constants or pseudo columns
- C. It can display multiple rows and columns
- D. It can be accessed by any user who has the SELECT privilege in any schema
- E. It consists of a single row and single column of VARCHAR2 data type
- F. It can display multiple rows but only a single column
Answer: A,E
Explanation:
https://en.wikipedia.org/wiki/DUAL_table
NEW QUESTION 38
Which three statements are true about table data storage in an Oracle Database? (Choose three.)
- A. Index block free space is always contiguous in the middle of the block
- B. Data block free space is always contiguous in the middle of the block
- C. Multiple row pieces from the same row may be stored in the same block
- D. Multiple row pieces from the same row may be stored in different database blocks
- E. A table row piece can be chained across several database blocks
- F. Data block headers contain their own Data Block Address (DBA)
Answer: D,E,F
Explanation:
Reference:
https://antognini.ch/2016/10/whats-the-difference-between-row-migration-and-row-chaining/
NEW QUESTION 39
You want to use table compression suitable for OLTP that will:
* Compress rows for all DML statements on that table
* Minimize the overheads associated with compression
Which compression option is best suited for this?
- A. COLUMN STORE COMPRESS FOR ARCHIVE HIGH
- B. COLUMN STORE COMPRESS FOR ARCHIVE LOW
- C. COLUMN STORE COMPRESS FOR QUERY LOW
- D. ROW STORE COMPRESS ADVANCED
- E. ROW STORE COMPRESS BASIC
Answer: D
NEW QUESTION 40
Which two statements are true about trace files produced by the Oracle Database server?
(Choose two.)
- A. They can be written by background processes
- B. They can be written by server processes
- C. Trace files are written to the Fast Recovery Area (FRA)
- 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
Answer: A,B
Explanation:
https://gerardnico.com/db/oracle/trace_file
NEW QUESTION 41
Which is true about security rules on a compute node?
- A. New security rules can be defined to use only the TCP protocol but multiple port numbers.
- B. A new database deployment on a compute node automatically enables a set of predefined security rules.
- C. A security rule can restrict IP addresses that can connect to a database instance on a compute node.
- D. The port used for HTTPS connections is enabled by default based on a predefined security rule.
- E. A compute node port can be enabled only if it is associated with an existing security rule.
Answer: B
NEW QUESTION 42
Which three statements are true about time zones, date data types, and timestamp data types in an Oracle database? (Choose three.)
- A. The DBTIMEZONE function can return an offset from Universal Coordinated Time (UTC)
- B. A TIMESTAMP WITH LOCAL TIMEZONE data type column is stored in the database using the time zone of the session that inserted the row
- C. A TIMESTAMP data type column contains information about year, month, and day
- D. The CURRENT_TIMESTAMP function returns data without time zone information
- E. The SESSIONTIMEZONE function can return an offset from Universal Coordinated Time (UTC)
Answer: A,D,E
NEW QUESTION 43
Which two are true about shrinking a segment online? (Choose two.)
- A. To shrink a table it must have a PRIMARY KEY constraint
- B. To shrink a table it must have a UNIQUE KEY constraint
- C. It must be in a tablespace that uses Automatic Segment Space Management (ASSM)
- D. To shrink a table it must have row movement enabled
- E. It is not possible to shrink either indexes or Index Organized Tables (IOTs)
- F. It always eliminates all migrated rows if any exist in the table
Answer: C,D
Explanation:
Reference:
https://docs.oracle.com/cd/B19306_01/server.102/b14200/statements_3001.htm
NEW QUESTION 44
Which three statements are true about GLOBAL TEMPORARY TABLES? (Choose three.)
- A. GLOBAL TEMPORARY TABLE rows inserted by a session are available to any other session whose user has been granted select on the table.
- B. A DELETE command on a GLOBAL TEMPORARY TABLE cannot be rolled back.
- C. A GLOBAL TEMPORARY TABLE'S definition is available to multiple sessions.
- D. Any GLOBAL TEMPORARY TABLE rows existing at session termination will be deleted.
- E. GLOBAL TEMPORARY TABLE space allocation occurs at session start.
- F. A TRUNCATE command issued in a session causes all rows in a GLOBAL TEMPORARY TABLE for the issuing session to be deleted.
Answer: A,B,E
NEW QUESTION 45
Which statement is true about the INTERSECT operator used in compound queries?
- A. It ignores NULLs
- B. Multiple INTERSECT operators are not possible in the same SQL statement
- C. INTERSECT is of lower precedence than UNION or UNION ALL
- D. It processes NULLs in the selected columns
Answer: D
NEW QUESTION 46
In the spfile of a single instance database, LOCAL_LISTENER is set to LISTENER_1.
The TNSNAMES.ORA file in $ORACLE_HOME/network/admin in the database home contains:
Which statement is true?
- A. The definition for LISTENER_1 requires a CONNECT_DATA section to enable dynamic service registration
- B. There are two listeners named LISTENER and LISTENER_1 running simultaneously using port 1521 on the same host as the database instances
- C. Dynamic service registration cannot be used for this database instance
- D. The LREG process registers services dynamically with the LISTENER_1 listener
- E. LISTENER_1 must also be defined in the LISTENER.ORA file to enable dynamic service registration
Answer: E
NEW QUESTION 47
Which three statements are true about table data storage in an Oracle Database? (Choose three.)
- A. Index block free space is always contiguous in the middle of the block
- B. Data block headers contain their own Data Block Address (DBA)
- C. Multiple row pieces from the same row may be stored in the same block
- D. Multiple row pieces from the same row may be stored in different database blocks
- E. A table row piece can be chained across several database blocks
- F. Data block free space is always contiguous in the middle of the block
Answer: D,E,F
Explanation:
Explanation/Reference: https://books.google.com.pk/books?id=lNtVjrmbzckC&pg=PA267&lpg=PA267&dq=Multiple+row
+pieces+from+the+same+row+may+be+stored+in+different+database
+blocks&source=bl&ots=lEIhFe2Q52&sig=ACfU3U1TETJPy194pARxfIJ5ROaQdySCMQ&hl=en&sa=X&ved=2 ahUKEwivveLa97_mAhWOzaQKHahYAVEQ6AEwAnoECAoQAQ#v=onepage&q=Multiple%20row%20pieces
%20from%20the%20same%20row%20may%20be%20stored%20in%20different%20database%
20blocks&f=false
NEW QUESTION 48
Which two are true about shrinking a segment online? (Choose two.)
- A. To shrink a table it must have a PRIMARY KEY constraint
- B. It must be in a tablespace that uses Automatic Segment Space Management (ASSM)
- C. To shrink a table it must have a UNIQUE KEY constraint
- D. To shrink a table it must have row movement enabled
- E. It is not possible to shrink either indexes or Index Organized Tables (IOTs)
- F. It always eliminates all migrated rows if any exist in the table
Answer: A,D
Explanation:
Explanation/Reference: https://docs.oracle.com/cd/B19306_01/server.102/b14200/statements_3001.htm
NEW QUESTION 49
Which three statements are true regarding indexes? (Choose three.)
- A. A UNIQUE index can be altered to be non-unique
- B. A SELECT statement can access one or more indices without accessing any tables
- C. When a table is dropped and is moved to the RECYCLE BIN, all indexes built on that table are permanently dropped
- D. A table belonging to one user can have an index that belongs to a different user
- E. An update to a table can result in no updates to any of the table's indexes
- F. An update to a table can result in updates to any or all of the table's indexes
Answer: A,C,F
NEW QUESTION 50
Which three failures require intervention for recovery? (Choose three.)
- A. a user error such as dropping the wrong table
- B. statement failure
- C. user process failure
- D. network interface card (NIC) failure
- E. media failure
Answer: A,C,E
NEW QUESTION 51
Which two statements are true about the ORDER BY clause when used with a SQL statement containing a SET operator such as UNION? (Choose two.)
- A. The first column in the first SELECT of the compound query with the UNION operator is used by default to sort output in the absence of an ORDER BY clause
- B. Only column names from the first SELECT statement in the compound query are recognized
- C. Each SELECT statement in the compound query must have its own ORDER BY clause
- D. Column positions must be used in the ORDER BY clause
- E. Each SELECT statement in the compound query can have its own ORDER BY clause
Answer: B,E
NEW QUESTION 52
Which two statements are true about the results of using the INTERSECT operator in compound queries? (Choose two.)
- A. INTERSECT ignores NULLs
- B. Reversing the order of the intersected tables can sometimes affect the output
- C. Column names in each SELECT in the compound query can be different
- D. The number of columns in each SELECT in the compound query can be different
- E. INTERSECT returns rows common to both sides of the compound query
Answer: C,E
Explanation:
https://www.oracletutorial.com/oracle-basics/oracle-intersect/
NEW QUESTION 53
Examine this command and some partial output:
Why does the DB01.abc.comservice show unknown status?
- A. The service DB01.abc.com is dynamically registered
- B. The listener is not listening on the default port 1521
- C. The service DB01.abc.com is statically registered
- D. The LOCAL_LISTENER database parameter is not set to a service name that refers to LISTENER_1
- E. The SID_LIST_LISTENER section is not contained in the LISTENER.ORA file
Answer: D
NEW QUESTION 54
The SALES_Q1 and USERS tablespaces exist in one of your databases and TEMP is a temporary tablespace.
Segment creation is not deferred.
You execute this command:
Which three statements must be true so that the SALES user can create tables in SALES_Q1?
(Choose three.)
- A. The sales user must have a quota on the SALES_Q1 tablespace to hold all the rows to be inserted into any table in their schema
- B. The sales user must have been granted the CREATE SESSION privilege
- C. The sales user must have a quota on the TEMP tablespace
- D. The sales user must have been granted the CREATE TABLE privilege
- E. The sales user must have a quota on the SALES_Q1 tablespace to hold the initial extends of all tables they plan to create in their schema
- F. The sales user must have their quota on the users tablespace removed
Answer: D,E,F
NEW QUESTION 55
Your database instance is started with a PFILE.
Examine these parameters:
You want to increase the size of the buffer cache.
Free memory is available to increase the size of the buffer cache.
You execute the command:
SQL> ALTER SYSTEM SET DB_CACHE_SIZE=1024M;
What is the outcome?
- A. Change is applied to the current instance, but does not persist after instance restart
- B. It fails because the SCOPE clause is missing
- C. The value is changed for the current instance and in the PFILE
- D. The value is changed only in the PFILE and takes effect at the next instance startup
Answer: A
Explanation:
Reference:
https://docs.oracle.com/database/121/SQLRF/statements_2017.htm#SQLRF00902
NEW QUESTION 56
Which two statements are true about the configuration and use of UNDO_RETENTION with GURANTEED ? (Choose two.) RETENTION
- A. Unexpired UNDO is always retained.
- B. UNDO_RETENTION specifies for how long Oracle attempts to keep unexpired UNDO.
- C. UNDO_RETENTION specifies how long all types of UNDO are retained.
- D. UNDO_RETENTION specifies for how long Oracle attempts to keep expired and unexpired UNDO.
- E. Active UNDO is always retained.
Answer: A,C
NEW QUESTION 57
......
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