Oracle 1z0-082 Exam Dumps

Oracle Database Administration I

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Exam Code	1z0-082
Exam Name	Oracle Database Administration I
Questions	142 Questions Answers With Explanation
Update Date	August 03, 2026
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Demo Questions

Question # 1

Which three statements are true about data block storage in an Oracle Database?

A. A block header contains a row directory pointing to all rows in the block. 
B. An index block can contain row data. 
C. Row data is stored starting at the end of the block. 
D. A data block header is of a fixed length. 
E. A table block must always contain row data. 

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Question # 2

Table ORDER_ITEMS contains columns ORDER_ID, UNIT_PRICE and QUANTITY, of data type NUMBER. Examine these SQL statements: Statement 1: SELECT MAX(unit_price * quantity) “Maximum Order” FROM order_items; Statement 2: SELECT MAX(unit_price * quantity) “Maximum Order” FROM order_items GROUP BY order_id; Which two statements are true?

A. Statement 1 returns only one row of output. 
B. Statement 2 returns only one row of output.
C. Both statements will return NULL if either UNIT_PRICE or QUANTITY contains NULL. 
D. Both the statements give the same output. 
E. Statement 2 may return multiple rows of output. 

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Question # 3

The stores table has a column START_DATE of data type DATE, containing the date the row was inserted. You only want to display details of rows where START_DATE is within the last 25 months. Which where clause can be used? 

A. WHERE MON'THS_BETWEEN (SYSDATE, start_date) <= 25
B. WHERE ADD_MONTHS<start_date, 25) <= SYSDATE
C. WHERE TO_XUMBER(start_date - SYSDATE) <= 25
D. WHERE MON'THS_BETWEEN (start_date, SYSDATE) <= 25

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Question # 4

Which two statements are true about the configuration and use of UNDO_RETENTION with GURANTEED RETENTION? (Choose two.)

A. UNDO_RETENTION specifies for how long Oracle attempts to keep expired and unexpired UNDO. 
B. UNDO_RETENTION specifies how long all types of UNDO are retained. 
C. Unexpired UNDO is always retained. 
D. Active UNDO is always retained. 
E. UNDO_RETENTION specifies for how long Oracle attempts to keep unexpired UNDO. 

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Question # 5

Which two statements are true about substitution variables? 

A. A substitution variable prefixed with & always prompts only once for a value in a session. 
B. A substitution variable prefixed with to prompts only once for a value in a session unless it is set to undefined in the session 
C. A substitution variable can be used only in a select statement. 
D. A substitution variable used to prompt for a column name must be enclosed in single quotation marks. 
E. A substitution variable can be used with any clause in a select statement. 
F. A substitution variable used to prompt for a column name must be enclosed in double quotation marks. 

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Question # 6

Which three statements are true about the naming methods and their features supported by Oracle database used to resolve connection information? 

A. Local naming can be used if Connect-Time Failover Is required. 
B. A client can connect to an Oracle database instance even If no client side network admin has been configured. 
C. Directory Naming requires setting the TNS_ADMIN environment variable on the client side. 
D. Local Naming requires setting the TNS_ADMIN environment variable on the client side. 
E. Directory Naming can be used if Connect-Time Failover is required. 
F. Easy Connect supports TCP/IP and SSL. 

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Question # 7

Which three instance situations are possible with the Oracle Database server without multi-tenant? (Choose three.)    

A. two or more instances on separate servers all associated with one database
B. one instance on one server associated with one database
C. one instance on one server associated with two or more databases on the same server
D. one instance on one server not associated with any database
E. one instance on one server associated with two or more databases on separate servers

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Question # 8

Your database instance is started with an SPFILE. A PFILE is also available. You execute this command: ALTER SYSTEM SET DB_CACHE_SIZE=100K; Where Is the value changed?

A. in the SPFILE, SPFILE, and memory
B. in the SPFILE and in memory
C. only In the SPFILE
D. in the SPFILE and SPFILEc
E. only in memory

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Question # 9

Which three statements are true about the tools used to configure Oracle Net Services? (Choose three.)  

A. The Oracle Net Configuration Assistant is only used when running the Oracle installer
B. Oracle Net Manager can be used to centrally configure listeners on any database servertarget
C. The lsnrctl utility requires a listener.ora file to exist before it is started
D. Oracle Net Manager can be used to locally configure naming methods on a databaseserver
E. Enterprise Manager Cloud Control can be used to centrally configure listeners on anymanaged database server
F. Enterprise Manager Cloud Control can be used to centrally configure net service namesfor any database server target 

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Question # 10

In your data center, Oracle Managed Files (OMF) is used for all databases.All tablespaces are smallfile tablespaces.SALES_Q1 is a permanent user-defined tablespace in the SALES database.Examine this command which is about to be issued by a DBA logged in to the SALESdatabase:ALTER TABLESPACE sales_q1 ADD DATAFILE;Which are two actions, either one of which you could take to ensure that the commandexecutes successfully? (Choose two.)

A. Ensure that DB_RECOVERY_FILE_DEST and DB_CREATE_FILE_DEST each specifywith at least 50 Mb of available space.
B. Specify a path in the DATAFILE clause of the command specifying a location with atleast 100M of available space.
C. Ensure that DB_CREATE_FILE_DEST specifies a location with at least 100 Mb ofavailable space.
D. Add the AUTOEXTEND ON clause with NEXT set to 100M.
E. Ensure that DB_RECOVERY_FILE_DEST and DB_CREATE_FILE_DEST each specifylocations with at least 50 Mb of available space. 

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Question # 11

In which three situations does a new transaction always start? (Choose three.) 

A. when issuing a SELECT FOR UPDATE statement after a CREATE TABLE AS SELECTstatement was issued in the same session
B. when issuing a TRUNCATE statement after a SELECT statement was issued in thesame session
C. when issuing a CREATE TABLE statement after a SELECT statement was issued in thesame session
D. when issuing the first Data Manipulation Language (DML) statement after a COMMITOR ROLLBACK statement was issued in the same session
E. when issuing a CREATE INDEX statement after a CREATE TABLE statementcompleted successfully in the same session
F. when issuing a DML statement after a DML statement failed in the same session

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Question # 12

Which three are types of segments in an Oracle Database? (Choose three.) 

A. undo
B. index
C. stored procedures
D. sequences
E. tables
F. clusters

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Question # 13

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 databaseinstance
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

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Question # 14

Which three statements are true about table data storage in an Oracle Database? (Choose three.)  

A. Data block headers contain their own Data Block Address (DBA)
B. A table row piece can be chained across several database blocks
C. Multiple row pieces from the same row may be stored in different database blocks
D. Multiple row pieces from the same row may be stored in the same block 
E. Data block free space is always contiguous in the middle of the block 
F. Index block free space is always contiguous in the middle of the block 

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Question # 15

Which three statements are true about single-row functions? (Choose three.) 

A. They can be used only in the WHERE clause of a SELECT statement
B. The argument can be a column name, variable, literal or an expression
C. The data type returned can be different from the data type of the argument
D. They can be nested to any level
E. They can accept only one argument
F. They return a single result row per table 

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Question # 16

Examine this command:CREATE UNDO TABLESPACE undotbs01DATAFILE ‘undotbs_01.dbf’SIZE 100MAUTOEXTEND ON;Which two actions must you take to ensure UNDOTBS01 is used as the default UNDO tablespace? (Choose two.)  

A. Add the SEGMENT SPACE MANAGEMENT AUTO clause
B. Set UNDO_TABLESPACE to UNDOTBS01
C. Add the NOLOGGING clause
D. Make certain that the database operates in automatic undo management mode
E. Add the ONLINE clause

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Question # 17

Which three statements are true about advanced connection options supported by Oracle Net for connection to Oracle Database instances? (Choose three.) 

A. Connect Time Failover requires the use of Transparent Application Failover (TAF)
B. Source Routing requires the use of a name server
C. Source Routing enables the use of Connection Manager (CMAN) which enablesnetwork traffic to be routed through a firewall
D. Load Balancing can balance the number of connections to dispatchers when using aShared Server configuration
E. Load Balancing requires the use of a name server
F. Connect Time Failover requires the connect string to have two or more listeneraddresses configured 

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Question # 18

Which two statements are true about UNDO and REDO? (Choose two.) 

A. The generation of UNDO generates REDO
B. DML modifies Oracle database objects and only generates UNDO
C. The generation of REDO generates UNDO
D. DML modifies Oracle database objects and only generates REDO

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Question # 19

The CUSTOMERS table has a CUST_CREDIT_LIMIT column of data type NUMBER. Which two queries execute successfully? (Choose two.) 

A. SELECT NVL(cust_credit_linit * .15, ‘Not Available’) FROM customers;
B. SELECT NVL2(cust_credit_linit * .15, ‘Not Available’) FROM customers;
C. SELECT NVL(TO_CHAR(cust_credit_limit * .15), ‘Not Available’) FROM customers;
D. SELECT TO_CHAR(NVL(cust_credit_limit * .15, ‘Not Available’)) FROM customers;
E. SELECT NVL2(cust_credit_limit, TO_CHAR(cust_credit_limit * .15), ‘Not Available’)FROM customeAnswer: B,C rs;

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Question # 20

Which two are true about shrinking a segment online? (Choose two.) 

A. It is not possible to shrink either indexes or Index Organized Tables (IOTs)
B. It always eliminates all migrated rows if any exist in the table
C. To shrink a table it must have a PRIMARY KEY constraint
D. To shrink a table it must have a UNIQUE KEY constraint
E. To shrink a table it must have row movement enabled
F. It must be in a tablespace that uses Automatic Segment Space Management (ASSM)

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Question # 21

You execute this command:CREATE SMALLFILE TABLESPACE salesDATAFILE ‘/u01/app/oracle/sales01.dbfSIZE 5GSEGMENT SPACE MANAGEMENT AUTO;Which two actions must you take to ensure UNDOTBS01 is used as the default UNDOtablespace? (Choose two.)

A. It must be smaller than the smallest BIGFILE tablespace
B. Free space is managed using freelists
C. Any data files added to the tablespace must have a size of 5 gigabytes
D. It uses the database default blocksize
E. It is a locally managed tablespace 

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Question # 22

A database is configured to use automatic undo management with temporary undoenabled.An UPDATE is executed on a temporary table.Where is the UNDO stored?

A. in the undo tablespace
B. in the SYSAUX tablespace
C. in the SGA
D. in the PGA
E. in the temporary tablespace

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Question # 23

Which four account management capabilities can be configured using Oracle profiles? (Choose four.) 

A. the number of hours for which an account is locked after the configured number of loginattempts has been reached
B. the number of days for which an account may be inactive before it is locked
C. the maximum amount of CPU time allowed for a user’s sessions before their account islocked
D. the ability to prevent a password from ever being reused
E. the number of password changes required within a period of time before a password canbe reused
F. the number of days for which an account is locked after the configured number of loginattempts has been reached
G. the maximum number of sessions permitted for a user before the account is locked 

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Question # 24

Which two statements are true about views used for viewing tablespace and datafile information? (Choose two.) 

A. Tablespace free space can be viewed in VSTABLESPACE
B. VSTABLESPACE displays information that is contained in the controlfile abouttablespaces
C. VSTABLESPACE displays information about tablespaces contained in the datadictionary
D. Tablespace free space can be viewed in DBA_TABLESPACES
E. A datafile can be renamed when the database is in MOUNT state and the new file nameis displayed when querying DBA_DATA_FILES after the database is opened 

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Question # 25

Which three statements are true about undo segments and the use of undo by transactions in an Oracle database instance? (Choose three.)

A. An undo segment may be used by multiple transactions simultaneously
B. Undo segments can wrap around to the first extent when a transaction fills the lastextend of the undo segment
C. Undo segments have a minimum of three extents
D. Undo segments can extend when a transaction fills the last extent of the undo segment
E. A single transaction may use multiple undo segments simultaneously
F. Undo segments must be stored in a BIGFILE tablespace
G. Undo segments must be stored in a SMALLFILE tablespace 

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