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To prepare for the Oracle 1Z1-083 exam, you need a thorough understanding of Oracle Database Administration concepts and hands-on experience working with Oracle databases. 1Z0-083 exam requires a significant amount of preparation and study, and you should plan to spend several months preparing for it. You can find a wealth of resources online, including study guides, practice exams, and training courses, that can help you prepare effectively for 1Z0-083 Exam.

The Oracle 1Z0-083 exam covers a range of topics related to administering and managing Oracle databases, including database architecture, security, backup and recovery, performance tuning, and high availability. Candidates are expected to have a strong understanding of these topics and be able to apply them in real-world scenarios.

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Certification Path for Oracle Database Administration II Exam Number: 1Z0-083

Oracle Database Administration II Exam Number: 1Z0-083 is an advanced exam. Successful completion by candidates of Data Administrator I and II will allow them to achieve Oracle Certified Database Administrator status.

Oracle Database Administration II Sample Questions (Q145-Q150):

NEW QUESTION # 145
Choose two. Which two are true about gathering optimizer statistics?

A. Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to CDB$ROOT gathers object statistics only in CDB$ROOT.
B. Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to CDB$ROOT gathers object statistics in all open pluggable databases (PDBs).
C. Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to a PDB opened in read/ write mode gathers object statistics for that PDB.
D. System statistics can be gathered only while the CDB is in MOUNT state.
E. Executing DBMS_STATS.GATHER_DATABASE_STATS while connected to CDB$ROOT gathers object statistics only in PDB$SEED.

Answer: A,C

NEW QUESTION # 146
Which two are true about changing the LOCAL_UNDO_ENABLED property to false in a CDB? (Choose two.)

A. After the change, any user with the required privilege can create an undo tablespace in the PDBs.
B. Any new PDB and existing PDBs are automatically configured to use the default undo tablespace in CDB$ROOT.
C. After the change, only a common user with the required privilege can create an undo tablespace in CDB&ROOT.
D. After the change, only one undo tablespace can exist in CDB$ROOT.
E. After the change, each existing PDB has to be reopened for the new undo mode to take effect.
F. Undo tablespaces existing in PDBs must be dropped before the change.

Answer: B,D

Explanation:
Explanation
You can set a CDB in local UNDO mode either at CDB creation or by altering the CDB property. When the database property LOCAL_UNDO_ENABLE is FALSE, which is the default, there is only one UNDO tablespace that is created in the CDB root, and that is shared by all containers. When LOCAL_UNDO_ENABLE is TRUE, every container in the CDB uses local undo and each PDB must have its own local UNDO tablespace. To maintain ease of management and provisioning, UNDO tablespace creation happens automatically and does not require any action from the user. When a PDB is opened and an UNDO tablespace is not available, its automatically created.

NEW QUESTION # 147
Which two statements are true when row archival management is enabled?

A. The ORA_ARCHIVE_STATE column is visible if referenced in the select list of a query.
B. The ORA_ARCHIVE_STATE column visibility is controlled by the ROW ARCHIVAL VISIBILITY session parameter.
C. The ORA_ARCHIVE_STATE column is updated automatically by the Oracle Server based on activity tracking columns, to Indicate that a row is no longer considered active. Correct
D. The ROW ARCHIVAL VISIBILITY session parameter defaults to active rows only.
E. The ORA_ARCHIVE_STATE column is updated manually or by a program that could reference activity tracking columns, to indicate that a row is no longer considered active.

Answer: A,E

NEW QUESTION # 148
Which two are true about server-generated alerts? (Choose two.)

A. Stateless alerts can be cleared manually.
B. Stateful alerts are purged automatically from the alert history.
C. Stateless alerts can be purged manually from the alert history.
D. Stateful alerts must be created by a DBA after resolving the problem.
E. Stateless alerts are automatically cleared.

Answer: A,C

Explanation:
Except for the tablespace space usage metric, which is database related, the other metrics are instance related. Threshold alerts are also referred to as stateful alerts which are automatically cleared when an alert condition clears. Stateful alert appears in DBA_OUTSTANDING_ALERTS and when cleared go to DBA_ALERT_HISTORY. Other server-generated alerts correspond to specific database events such as ORA-* errors, "Snapshot too old" errors, Recovery Area Low on Free Space, Resumable Session Suspended. These are non threshold based alerts, also referred to as stateless alerts. Stateless alerts go directly to the History table. +++ Most alerts (such as "Out of Space") are cleared automatically when the cause of the problem disappears. However, other alerts (such as generic alert log errors) are sent to you for notification and must be acknowledged by you. After taking the corrective measures, you acknowledge an alert by clearing or purging it. Clearing an alert sends the alert to the Alert History which is accessible from Monitoring sub menu. Purging an alert removes it from the Alert History.
Reference:
https://jameshuangsj.wordpress.com/2019/12/01/clears-stateless-alerts-in-oem-by-using-emcli/

NEW QUESTION # 149
RMAN is connected to a target database instance and an auxilary instance.
You execute 3625the command:
RMAN> DUPLICATE TARGET DATABASE TO dupdb
FROM ACTIVE DATABASE SECTION SIZE 1G;
What is the outcome?

A. RMAN uses the push method to transfer image copies
B. RMAN uses the pull method to restore files using image copies
C. RMAN uses the push method to transfer backup sets
D. RMAN uses the pull method to restore files using backup sets

Answer: D

NEW QUESTION # 150
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