Best Preparations of 1Z1-082 Exam 2022 Oracle Database 19c Unlimited 145 Questions
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This course is designed for Database Administrators and Database production Systems Administrators.
NEW QUESTION 10
Which three functions are performed by dispatchers in a shared server configuration? (Choose three.)
- A. sending shared server session responses back to requesters on the appropriate connection
- B. receiving inbound requests from processes using shared server connections
- C. checking for outbound shared server responses on the common outbound response queue
- D. broadcasting shared server session responses back to requesters on all connections
- E. sending each connection input request to the appropriate shared server input queue
- F. writing inbound request to the common request queue from all shared server connections
Answer: A,B,F
Explanation:
https://docs.oracle.com/cd/B28359_01/server.111/b28310/manproc001.htm#ADMIN11168
NEW QUESTION 11
Which three statements are true about dropping and unused columns in an Oracle database? (Choose three.)
- A. A column that is set to UNUSED still counts towards the limit of 1000 columns per table
- B. An UNUSED column's space is reclaimed automatically when the block containing that column is next queried.
- C. A DROP COLUMN command can be rolled back
- D. A primary key column referenced by another column as a foreign key can be dropped if using the CASCADE option.
- E. Partition key columns cannot be dropped.
- F. An UNUSED column's space is reclaimed automatically when the row containing that column is next queried.
Answer: A,B,D
NEW QUESTION 12
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. The value is changed only in the PFILE and takes effect at the next instance startup
- B. Change is applied to the current instance, but does not persist after instance restart
- C. The value is changed for the current instance and in the PFILE
- D. It fails because the SCOPE clause is missing
Answer: B
Explanation:
Explanation/Reference: https://docs.oracle.com/database/121/SQLRF/statements_2017.htm#SQLRF00902
NEW QUESTION 13
Your database instance was shut down normally and then started in NOMOUNT state. You then execute this command:
ALTER DATABASE MOUNT;
Which two actions are performed? (Choose two.)
- A. The initialization parameter file is read
- B. The online data files are opened
- C. The online redo logs are opened
- D. The Oracle background processes are started
- E. The alert log records the execution details
- F. The control file is read
Answer: D,F
NEW QUESTION 14
In which three situations does a new transaction always start? (Choose three.)
- A. when issuing a CREATE TABLE statement after a SELECT statement was issued in the same session
- B. when issuing the first Data Manipulation Language (DML) statement after a COMMIT OR ROLLBACK statement was issued in the same session
- C. when issuing a TRUNCATE statement after a SELECT statement was issued in the same session
- D. when issuing a CREATE INDEX statement after a CREATE TABLE statement completed successfully in the same session
- E. when issuing a SELECT FOR UPDATE statement after a CREATE TABLE AS SELECT statement was issued in the same session
- F. when issuing a DML statement after a DML statement failed in the same session
Answer: B,D,E
Explanation:
https://docs.oracle.com/en/database/oracle/oracle-database/19/cncpt/transactions.html#GUID-7690181F-8293-47B9-ADC1-905BD9C3AF57
NEW QUESTION 15
Examine this command:
SQL> ALTER TABLE ORDERS SHRINK SPACE COMPACT
Which two statements are true?
- A. Dependent indexes become UNUSABLE.
- B. The shrink operation causes rows to be moved to empty space starting from the beginning of the orders segment.
- C. Queries and DML statements are allowed on ORDERS while the shrink is executing.
- D. The shrink operation causes rows to be moved to empty space starting toward the end of the orders segment.
- E. Only queries are allowed on ORDERS while the shrink is executing.
- F. The high-water mark (HWM) of orders is adjusted.
Answer: B,C
NEW QUESTION 16
Which two statements are true about the rules of precedence for operators? (Choose two.)
- A. The concatenation operator | | is always evaluated before addition and subtraction in an expression
- B. Arithmetic operators with equal precedence are evaluated from left to right within an expression
- C. NULLS influence the precedence of operators in an expression
- D. The + binary operator has the highest precedence in an expression in a SQL statement
- E. Multiple parentheses can be used to override the default precedence of operators in an expression
Answer: D,E
NEW QUESTION 17
Examine the description of the CUSTOMERS table:
For customers whose income level has a value, you want to display the first name and due amount as 5% of their credit limit. Customers whose due amount is null should not be displayed.
Which query should be used?
- A. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNTFROM customersWHERE cust_income_level IS NOT NULLAND cust_credit_limit IS NOT NULL;
- B. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNTFROM customersWHERE cust_income_level <> NULLAND due_amount <> NULL;
- C. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNTFROM customersWHERE cust_income_level != NULLAND cust_credit_level !=NULL;
- D. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNTFROM customersWHERE cust_income_level != NULLAND due_amount !=NULL;
- E. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNTFROM customersWHERE cust_incoms_level IS NOT NULLAND due_amount IS NOT NULL;
Answer: A
NEW QUESTION 18
Examine this description of the TRANSACTIONS table:
Which two SQL statements execute successfully? (Choose two.)
- A. SELECT customer_id AS "CUSTOMER-ID", transaction_date AS DATE, amount + 100 "DUES" FROM transactions;
- B. SELECT customer_id AS CUSTOMER-ID, transaction_date AS TRANS_DATE, amount + 100
"DUES AMOUNT" FROM transactions; - C. SELECT customer_id CUSTID, transaction_date TRANS_DATE, amount + 100 DUES FROM transactions;
- D. SELECT customer_id AS `CUSTOMER-ID', transaction_date AS DATE, amount + 100 `DUES AMOUNT' FROM transactions;
- E. SELECT customer_id AS "CUSTOMER-ID", transaction_date AS "DATE", amount + 100 DUES FROM transactions;
Answer: C,E
NEW QUESTION 19
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 login attempts has been reached
- B. the maximum amount of CPU time allowed for a user's sessions before their account is locked
- C. the maximum number of sessions permitted for a user before the account is locked
- D. the ability to prevent a password from ever being reused
- E. the number of days for which an account may be inactive before it is locked
- F. the number of password changes required within a period of time before a password can be reused
- G. the number of days for which an account is locked after the configured number of login attempts has been reached
Answer: A,D,F,G
NEW QUESTION 20
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 fails and returns the error message "ORA-30036: unable to extend segment by 8 in undo tablespace
'UNDOTBS1'". - B. It succeeds and the least recently written undo block of UNDOTBS1 is overwritten by the generated undo.
- C. It succeeds and the least recently read undo block of UNDOTBS1 is overwritten by the generated undo.
- D. It succeeds and the generated undo is stored in SYSTEM.
- E. It succeeds and the generated undo is stored in SYSAUX.
Answer: B
NEW QUESTION 21
Which two statements are true about the rules of precedence for operators? (Choose two.)
- A. The concatenation operator | | is always evaluated before addition and subtraction in an expression
- B. NULLS influence the precedence of operators in an expression
- C. The + binary operator has the highest precedence in an expression in a SQL statement
- D. Multiple parentheses can be used to override the default precedence of operators in an expression
- E. Arithmetic operators with equal precedence are evaluated from left to right within an expression
Answer: D,E
Explanation:
Reference:
https://docs.oracle.com/cd/A87860_01/doc/server.817/a85397/operator.htm Precedence is the order in which Oracle evaluates different operators in the same expression. When evaluating an expression containing multiple operators, Oracle evaluates operators with higher precedence before evaluating those with lower precedence. Oracle evaluates operators with equal precedence from left to right within an expression.
NEW QUESTION 22
Which three statements are true about the tools used to configure Oracle Net Services? (Choose three.)
- A. The lsnrctl utility requires a listener.ora file to exist before it is started
- B. Enterprise Manager Cloud Control can be used to centrally configure listeners on any managed database server
- C. Oracle Net Manager can be used to locally configure naming methods on a database server
- D. Enterprise Manager Cloud Control can be used to centrally configure net service names for any database server target
- E. Oracle Net Manager can be used to centrally configure listeners on any database server target
- F. The Oracle Net Configuration Assistant is only used when running the Oracle installer
Answer: B,C,E
NEW QUESTION 23
You execute this command:
During the export operation, you detach from the job by using CTRL+C and then execute this command:
Export> STOP_JOB=immediate
Are you sure you wish to stop the job ([yes]/no): yes
Which two statements are true about the job? (Choose two.)
- A. You can reattach to it and monitor it
- B. It is paused and can be resumed
- C. You can no longer monitor it
- D. It continues to run in the background
- E. It terminates
Answer: C,E
Explanation:
Explanation/Reference: https://blog.oracle48.nl/killing-and-resuming-datapump-expdp-and-impdp-jobs/
NEW QUESTION 24
Which three statements are true about a self-join? (Choose three.)
- A. The ON clause can be used
- B. The ON clause must be used
- C. It can be an outer join
- D. It must be an inner join
- E. It must be an equi join
- F. The query must use two different aliases for the table
Answer: A,D,F
NEW QUESTION 25
Which three statements are true about table data storage in an Oracle Database? (Choose three.)
- A. Multiple row pieces from the same row may be stored in different database blocks
- B. Data block free space is always contiguous in the middle of the block
- C. Data block headers contain their own Data Block Address (DBA)
- D. Multiple row pieces from the same row may be stored in the same block
- E. A table row piece can be chained across several database blocks
- F. Index block free space is always contiguous in the middle of the block
Answer: A,B,E
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 26
Which two statements are true about the Automatic Diagnostic Repository (ADR)? (Choose two.)
- A. It supports diagnostics for Automatic Storage Management (ASM)
- B. It supports diagnostics for Oracle Clusterware
- C. The ADR base defaults to $ORACLE_HOME/rdbms/admin ifneither DIAGNOSTIC_DEST nor ORACLE_BASE is set
- D. It is held inside an Oracle database schema
- E. The ADR base defaults to $ORACLE_HOME/dbs if the DIAGNOSTIC_DEST parameter and the ORACLE_BASE environment variable are not set
Answer: A,B
Explanation:
The database, Oracle Automatic Storage Management (Oracle ASM), the listener, Oracle Clusterware, and other Oracle products or components store all diagnostic data in the ADR. https://docs.oracle.com/database/121/ADMIN/diag.htm#ADMIN11260
NEW QUESTION 27
Examine the description of the CUSTOMERS table:
For customers whose income level has a value, you want to display the first name and due amount as 5% of their credit limit. Customers whose due amount is null should not be displayed.
Which query should be used?
- A. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNTFROM customersWHERE cust_income_level IS NOT NULLAND cust_credit_limit IS NOT NULL;
- B. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNTFROM customersWHERE cust_income_level <> NULLAND due_amount <> NULL;
- C. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNTFROM customersWHERE cust_income_level IS NOT NULLAND due_amount IS NOT NULL;
- D. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNTFROM customersWHERE cust_income_level != NULLAND cust_credit_level !=NULL;
- E. SELECT cust_first_name, cust_credit_limit * .05 AS DUE_AMOUNTFROM customersWHERE cust_income_level != NULLAND due_amount != NULL;
Answer: A
NEW QUESTION 28
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