[Mar-2023] Oracle Database 19c 1Z1-082 Exam Practice Dumps [Q25-Q41]

[Mar-2023] Oracle Database 19c 1Z1-082 Exam Practice Dumps

2023 1Z1-082 Premium Files Test pdf - Free Dumps Collection

NEW QUESTION 25
In one of your databases, user KING is:
1. Not a DBA user
2. An operating system (OS) user
Examine this command and its output:

What must you do so that KING is authenticated by the OS when connecting to the database instance?

• A. Alter user KING to be IDENTIFIED EXTERNALLY
• B. Grant DBA to KING
• C. Set OS_AUTHENT_PREFIX to OPS$
• D. Have the OS administrator add KING to the OSDBA group
• E. Unset REMOTE_LOGIN_PASSWORDFILE

Answer: C

Explanation:
https://oracle-base.com/articles/misc/os-authentication

 

NEW QUESTION 26
Which three object types support deferred segment creation? (Choose three.)

• A. temporary tables
• B. external tables
• C. clustered tables
• D. index organized tables
• E. heap organized tables
• F. partitioned tables

Answer: D,E,F

 

NEW QUESTION 27
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. Data block headers contain their own Data Block Address (DBA)
• D. A table row piece can be chained across several database blocks
• E. Multiple row pieces from the same row may be stored in different database blocks
• F. Multiple row pieces from the same row may be stored in the same block

Answer: C,D,E

Explanation:
Reference:
https://antognini.ch/2016/10/whats-the-difference-between-row-migration-and-row-chaining/

 

NEW QUESTION 28
Which three failures do not require intervention for recovery? (Choose three.)

• A. media failure
• B. transaction failure
• C. statement failure
• D. user process failure
• E. network interface card (NIC) failure

Answer: B,C,D

 

NEW QUESTION 29
Examine the description of the EMPLOYEES table:

Which query is valid?

• A. SELECT dept_id, MAX(AVG(salary)) FROM employees GROUP BY dept_id;
• B. SELECT dept_id, join_date, SUM(salary) FROM employees GROUP BY dept_id, join_date;
• C. SELECT dept_id, AVG(MAX(salary)) FROM employees GROUP BY dept_id;
• D. SELECT dept_id, join_date, SUM(salary) FROM employees GROUP BY dept_id;

Answer: B

 

NEW QUESTION 30
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. Trace files are written to the Fast Recovery Area (FRA)
• C. They can be written by server processes
• D. Trace file names are based on the database name concatenated with a sequential number
• E. All trace files contain error information that require contacting Oracle Support

Answer: A,C

Explanation:
Reference:
https://gerardnico.com/db/oracle/trace_file
https://docs.oracle.com/html/E25494_01/monitoring001.htm
Each server and background process can write to an associated trace file. When an internal error is detected by a process, it dumps information about the error to its trace file. Some of the information written to a trace file is intended for the database administrator, and other information is for Oracle Support Services. Trace file information is also used to tune applications and instances.

 

NEW QUESTION 31
Which two statements are true about the rules of precedence for operators? (Choose two.)

• A. The + binary operator has the highest precedence in an expression in a SQL statement
• B. NULLS influence the precedence of operators in an expression
• C. Multiple parentheses can be used to override the default precedence of operators in an expression
• D. The concatenation operator | | is always evaluated before addition and subtraction in an expression
• E. Arithmetic operators with equal precedence are evaluated from left to right within an expression

Answer: C,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 32
Which two statements are true about single row functions? (Choose two.)

• A. FLOOR : returns the smallest integer greater than or equal to a specified number
• B. CONCAT : can be used to combine any number of values
• C. CEIL : can be used for positive and negative numbers
• D. MOD : returns the quotient of a division operation
• E. TRUNC : can be used with NUMBER and DATE values

Answer: C,E

Explanation:
Reference:
https://docs.oracle.com/en/database/oracle/oracle-database/18/sqlrf/Single-Row-Functions.html#GUID-B93F789D-B486-49FF-B0CD-0C6181C5D85C

 

NEW QUESTION 33
In one of your databases, you create a user, HR, and then execute this command:
GRANT CREATE SESSION TO hr WITH ADMIN OPTION;
Which four actions can HR perform? (Choose four.)

• A. Execute DML statements in the HR schema
• B. Grant the CREATE SESSION privilege with ADMIN OPTION to other users
• C. Execute DDL statements in the HR schema
• D. Log in to the database instance
• E. Revoke the CREATE SESSION privilege from user HR
• F. Revoke the CREATE SESSION privilege from other users

Answer: B,D,E,F

Explanation:
Explanation

 

NEW QUESTION 34
A user complains about poor database performance. You suspect that the user's session is waiting for an event to complete.
You want to verify this.
Which two views may reveal for what the user's session is currently waiting? (Choose two.)

• A. V$SYSTEM_EVENT
• B. V$SESSION_WAIT
• C. V$SESSION
• D. V$SESSION_EVENT
• E. V$SESSION_WAIT_CLASS

Answer: B,D

 

NEW QUESTION 35
In one of your databases, you create a user, HR, and then execute this command:
GRANT CREATE SESSION TO hr WITH ADMIN OPTION;
Which three actions can HR perform? (Choose three.)

• A. Revoke the CREATE SESSION privilege from user HR
• B. Execute DML statements in the HR schema
• C. Grant the CREATE SESSION privilege with ADMIN OPTION to other users
• D. Execute DDL statements in the HR schema
• E. Log in to the database instance
• F. Revoke the CREATE SESSION privilege from other users

Answer: C,D,F

Explanation:
Explanation/Reference: https://docs.oracle.com/cd/B28359_01/network.111/b28531/authorization.htm#DBSEG224

 

NEW QUESTION 36
Which three statements are true about roles?

• A. All roles granted to a user are set on by default when the user logs in,
• B. The SET ROLE statement can disable one or more roles for a session.
• C. Roles may be granted to roles.
• D. Object privileges may not be granted to roles.
• E. The SET ROLE statement can enable one or more roles for a session.
• F. Roles must be password protected.

Answer: B,C,D

 

NEW QUESTION 37
An Oracle database session has an uncommitted transaction in progress which updated 5000 rows in a table.
Which three situations does the transaction complete thereby committing the updates?

• A. when a DBA issues a successful SHUTDOWN TRANSACTIONAL statement and the user then issues a COMMIT
• B. when a CREATE TABLE AS SELECT statement is executed unsuccessfully in the same session
• C. when a COMMIT statement is issued by the same user from another session in the same database instance
• D. when a CREATE INDEX statement is executed successfully in the same session
• E. when a DBA issues a successful SHUTDOWN IMMEDIATE statement and the user then issues a COMMIT
• F. when the session logs out successfully

Answer: A,D,F

 

NEW QUESTION 38
Which three statements are true about connection strings and service names used to connect to an Oracle database instance?

• A. A connection string must include the SID of a database Instance.
• B. A connection string including a service name must be defined in the cnsnames.ora file.
• C. A single database instance can support connections for multiple service names.
• D. A service name is created by a listener.
• E. Different connection strings in the same tnsnames.ora file can contain the same service name, host and port parameters.
• F. A single connection string can refer to multiple database instances.

Answer: C,E,F

 

NEW QUESTION 39
Which three are types of segments in an Oracle Database? (Choose three.)

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

Answer: B,C,E

 

NEW QUESTION 40
Evaluate these commands which execute successfully:

Which two statements are true about the ORD_ITEMS table and the ORD_SEQ sequence? (Choose two.)

• A. Sequence ORD_SEQ cycles back to 1 after every 5000 numbers and can cycle 20 times
• B. If sequence ORD_SEQ is dropped then the default value for column ORD_NO will be NULL for rows inserted into ORD_ITEMS
• C. Sequence ORD_SEQ is guaranteed not to generate duplicate numbers
• D. Column ORD_NO gets the next number from sequence ORD_SEQ whenever a row is inserted into ORD_ITEMS and no explicit value is given for ORD_NO
• E. Any user inserting rows into table ORD_ITEMS must have been granted access to sequence ORD_SEQ

Answer: D,E

 

NEW QUESTION 41
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