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To prepare for the Oracle 1Z0-082 Certification Exam, candidates can take advantage of a range of study materials, including official Oracle training courses, study guides, and practice exams. It is important for candidates to have hands-on experience with Oracle databases before taking the exam, as this will help them understand the practical aspects of database administration.

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Oracle 1Z0-082 Exam consists of 75 multiple-choice questions that must be completed within 120 minutes. 1Z0-082 exam covers a wide range of topics, including database architecture, data management, backup and recovery, security, performance tuning, and monitoring. Candidates must score at least 63% to pass the exam and earn the OCA certification.

Oracle Database Administration I Sample Questions (Q49-Q54):

NEW QUESTION # 49
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. LISTENER_1 must also be defined in the LISTENER.ORA file to enable dynamic service registration
B. Dynamic service registration cannot be used for this database instance
C. There are two listeners named LISTENER and LISTENER_1 running simultaneously using port 1521 on the same host as the database instances
D. The definition for LISTENER_1 requires a CONNECT_DATA section to enable dynamic service registration
E. The LREG process registers services dynamically with the LISTENER_1 listener

Answer: E

Explanation:
The listener forwards client requests to supported services. These services are dynamically registered with the listener. This dynamic registration feature is called service registration. The registration is performed by the Listener Registration (LREG) process. Dynamic service registration does not require any manual configuration in the listener.ora file.
Reference:
https://docs.oracle.com/database/121/NETAG/listenercfg.htm#NETAG292
https://docs.oracle.com/database/121/NETAG/listenercfg.htm#NETAG292

NEW QUESTION # 50
Which three statements are true about time zones, date data types, and timestamp data types in an Oracle database? (Choose three.)

A. A TIMESTAMP data type column contains information about year, month, and day
B. The CURRENT_TIMESTAMP function returns data without time zone information
C. The SESSIONTIMEZONE function can return an offset from Universal Coordinated Time (UTC)
D. The DBTIMEZONE function can return an offset from Universal Coordinated Time (UTC)
E. A TIMESTAMP WITH LOCAL TIMEZONE data type column is stored in the database using the time zone of the session that inserted the row

Answer: B,C,D

NEW QUESTION # 51
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 ADD_MONTHS<start_date, 25) <= SYSDATE
B. WHERE TO_XUMBER(start_date - SYSDATE) <= 25
C. WHERE MON'THS_BETWEEN (start_date, SYSDATE) <= 25
D. WHERE MON'THS_BETWEEN (SYSDATE, start_date) <= 25

Answer: C

NEW QUESTION # 52
Which three statements are true about the Oracle join and ANSI join syntax? (Choose three.)

A. The SQL:1999 compliant ANSI join syntax supports natural joins
B. The Oracle join syntax performs better than the SQL:1999 compliant ANSI join syntax
C. The Oracle join syntax supports natural joins
D. The Oracle join syntax supports creation of a Cartesian product of two tables
E. The SQL:1999 compliant ANSI join syntax supports creation of a Cartesian product of two tables
F. The Oracle join syntax only supports right outer joins
G. The Oracle join syntax performs less well than the SQL:1999 compliant ANSI join syntax

Answer: A,D,E

Explanation:
https://oracle-base.com/articles/9i/ansi-iso-sql-support

NEW QUESTION # 53
Which statement is true about the INTERSECT operator used in compound queries?

A. It processes NULLs in the selected columns
B. INTERSECT is of lower precedence than UNION or UNION ALL
C. Multiple INTERSECT operators are not possible in the same SQL statement
D. It ignores NULLs

Answer: A

NEW QUESTION # 54
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