Try 1Z1-083 Free Now! Real Exam Question Answers Updated [Dec 14, 2023]
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The Oracle 1Z1-083 exam consists of 80 multiple-choice questions and has a time limit of 105 minutes. To pass the test, candidates must score at least 63% or higher. 1Z1-083 exam covers a wide range of topics, including Oracle database architecture, backup and recovery strategies, database security, and performance tuning techniques. Oracle Database Administration II certification is ideal for professionals who want to demonstrate their expertise in Oracle database administration and advance their careers.
NEW QUESTION # 30
Choose two. Which two are true about an Oracle gold image-based installation in Oracle 18c and later releases?
- A. It uses a single RPM that automatically extracts and installs the Oracle Database software.
- B. It does not require the setup wizard.
- C. It can only install and configure Oracle Database software. The database has to be created separately.
- D. It can be used to install and upgrade Oracle Database for single-instance and cluster configurations.
- E. It can be used for both Oracle Database and Oracle Grid Infrastructure installation.
Answer: C,E
NEW QUESTION # 31
Choose two. RMAN has just been connected to a target database and the recovery catalog database. In which two cases would an automatic full resynchronization occur between this target database's control file and the RMAN recovery catalog?
- A. when a new tablespace is added to a registered target database
- B. when the target is first registered
- C. when control file metadata for data file backups or image copies has been overwritten in the target database's control file due to being older than CONTROL_FILE_RECORD_KEEP_TIME
- D. when a backup of the current control file is created
- E. when control file metadata for archive log backups or image copies has been overwritten in the target database's control file due to being older than CONTROL_FILE_RECORD_KEEP_TIME
Answer: A,B
NEW QUESTION # 32
Choose two. Which two are true about the execution of operating system scripts starting from Oracle Database 19c?
- A. root.sh can be executed automatically by the Database installer only by using sudo credentials.
- B. orainstRoot.sh can be executed automatically by the Database installer by using sudo or root credentials.
- C. The root password cannot be specified in a response file.
- D. root.sh can be executed automatically by the Database installer only if it is provided with root credentials.
- E. The sudo password must be specified in a response file.
Answer: C,D
NEW QUESTION # 33
Choose three. Which three are true about block media recovery?
- A. A block being recovered is not accessible.
- B. The target database for which one or more blocks are to be recovered must be in the OPEN state.
- C. The data file containing the block being recovered remains online.
- D. It can be performed on noncorrupt blocks.
- E. It cannot repair logical corruption.
- F. To use it, Flashback Database must be enabled.
Answer: A,C,F
NEW QUESTION # 34
You have configured RMAN SBT channels to write backups to media.
You then take an RMAN backup by using this command:
Which three are true? (Choose three.)
- A. The control file is included in the self-contained archival backup.
- B. All archive logs created after this backup are kept for two years.
- C. The restore point is a label for the system change number (SCN) before the archival backup was taken.
- D. The data file backups in the self-contained archive backup are not considered obsolete for two years regardless of the retention policy.
- E. The restore point is a label for the system change number (SCN) that will be saved two years after the archival backup was taken.
- F. The SPFILE is included in the self-contaied archival backup.
Answer: A,D,F
Explanation:
Explanation
https://docs.oracle.com/cd/E18283_01/server.112/e17118/statements_6011.htm
http://devel.hotpilot.cz/ora11gR2u2-full/backup.112/e10643/rcmsubcl011.htm An example:
http://www.online-database.eu/recovery-manager-rman/143-rman-backupsets-with-restore-point
NEW QUESTION # 35
choose two You configured the Fast Recovery Area (FRA) for your database. The database instance is in ARCHIVELOG mode. The default location for the archived redo log files is the FRA. Which two files are removed automatically if space is required in the FRA as per the retention policy?
- A. RMAN backups that are obsolete
- B. archived redo log files that have multiple copies in a different archive location
- C. user-managed backups of data files and control files
- D. flashback logs
Answer: A,D
NEW QUESTION # 36
Examine this command:
$ rhpctl move database -sourcehome Oracle_home_path -destinationhome
Oracle_home_path
For which two purposes can you use this command? (Choose two.)
- A. to switch to a read-only Oracle home
- B. to switch the Oracle Database home when using a centralized Rapid Home Provisioning server
- C. to switch back to the previous Oracle home as part of a rollback operation
- D. to switch to a patched Oracle Database home
- E. to switch an existing Oracle Database home to a newer release of Oracle software on the same server
Answer: D,E
Explanation:
Explanation/Reference: https://docs.oracle.com/en/database/oracle/oracle-database/18/cwadd/rapid-home- provisioning.html#GUID-856C7378-2510-4B3E-8BE1-B4D79DF4FE8B
NEW QUESTION # 37
Choose the best answer. Examine this configuration: 1. CDB1 is a container database. 2.
COMMON_USER_PREFIX is set to an empty string. 3. PDB1 is a pluggable database in CDB1. 4. APP1_ROOT is an application container in CDB1. 5. APP1_PDB1 is an application PDB in APP1_ROOT. You execute these commands: S sqlplus sys/oracle@localhost:1521/cdb1 as sysdba SQL> CREATE ROLE role1 CONTAINER=CURRENT; Which is true?
- A. ROLE1 will be created in CDB$ROOT, PDB1, APP1_ROOT, and APP1_PDB1.
- B. It will return an error because common roles must start with C##.
- C. It will return an error because creation of a local role is not allowed in CDB$ROOT.
- D. ROLE1 will be created only in CDB$ROOT.
- E. ROLE1 will be created only in CDB$ROOT and APP1_ROOT.
Answer: C
NEW QUESTION # 38
Which two are true about changing the LOCAL_UNDO_ENABLED property to false in a CDB? (Choose two.)
- A. Undo tablespaces existing in PDBs must be dropped before the change.
- B. After the change, each existing PDB has to be reopened for the new undo mode to take effect.
- C. Any new PDB and existing PDBs are automatically configured to use the default undo tablespace in CDB$ROOT.
- D. After the change, any user with the required privilege can create an undo tablespace in the PDBs.
- E. After the change, only one undo tablespace can exist in CDB$ROOT.
- F. After the change, only a common user with the required privilege can create an undo tablespace in CDB&ROOT.
Answer: B,F
NEW QUESTION # 39
Choose two. You are managing this configuration: 1. CDB1 is a container database. 2. PDB1 and PDB2 are two pluggable databases in CDB1. 3. USER1.EMP is a table in PDB1 and USER2.DEPT is a table in PDB2 . CDB1 user SYS executes these commands after connecting successfully to PDB2: SQL> ALTER SESSION SET CONTAINER=pdb1; Session altered. SQL> INSERT INTO user1.emp VALUES (100, 'Alan' ,1) ; 1 row created. SQL> INSERT INTO user1.emp VALUES (101, 'Ben' ,1) ; 1 row created. SQL> ALTER SESSION SET CONTAINER=pdb2; Session altered. SQL> INSERT INTO user2.dept VALUES(1, 'IT'); Which two are true? Which two are true? (Choose two.)
- A. The insert on USER2.DEPT fails because of the active transaction in the parent container.
- B. The insert on USER2.DEPT is a recursive autonomous transaction by the child session and is committed.
- C. The inserts on USER1.EMP were committed when the session connected to PDB2.
- D. The inserts on USER1.EMP were rolled back when the session connected to PDB2
- E. The inserts on USER1.EMP remain uncommitted when the session connected to PDB2.
- F. The inserts on USER1.EMP were committed when the session inserted a row into USER2. DEPT.
- G. The insert on USER2.DEPT is uncommitted.
Answer: A,E
NEW QUESTION # 40
Examine these queries and their output:
After a system crash, an instance restart and an attempted opening of the PDBs result in:
Which two are true? (Choose two.)
- A. Data file 24 must be recovered while the CDB is opened.
- B. Data file 24 can be recovered while CDB$ROOTand PDB$SEEDare opened.
- C. Data file 24 cannot be recovered while the CDB is opened.
- D. Data file 24 can be recovered while PDB2 is opened.
- E. Data file 24 must be recovered while PDB2 is closed.
Answer: A,C
NEW QUESTION # 41
In which two situations can you use Database Upgrade Assistant? (Choose two.)
- A. when a character set conversion is required during the upgrade
- B. when the hardware platform needs to be changed as part of the upgrade
- C. when multiple pluggable databases in a container database have to be upgraded in a specific sequence
- D. when the target and source database are on the same platform
- E. when the operating system (OS) needs to be changed as part of the upgrade
Answer: C,D
NEW QUESTION # 42
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 are automatically cleared.
- D. Stateless alerts can be purged manually from the alert history.
- E. Stateful alerts must be created by a DBA after resolving the problem.
Answer: A,D
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 # 43
Which two are true about diagnosing Oracle Database failure situations using Data Recovery Advisor? (Choose two.)
- A. Data Recovery Advisor can be used if a database is closed.
- B. A failure can be closed only when it has been repaired.
- C. Using the Data Recovery Advisor LIST FAILURE command always requires that the database for which failures are to be listed is in MOUNT state.
- D. The Data Recovery Advisor CHANGE FAILURE command can be used only to change failure priorities.
- E. Data Recovery Advisor can proactively check for failures.
Answer: D,E
NEW QUESTION # 44
Which three are performed by Oracle Automatic Storage Management (ASM) instances? (Choose three.)
- A. managing Allocation Units (AUs) for disk group content
- B. managing extent allocation for Oracle database segments
- C. acting as an I/O server to write data file blocks to ASM disks on behalf of Database Writer processes (DBWn)
- D. mounting disk groups
- E. managing space allocation for Oracle ASM files
- F. acting as an I/O server to read data file blocks from ASM disks on behalf of database server processes
Answer: A,D,E
NEW QUESTION # 45
Which two are true about duplicating pluggable databases (PDBs) with RMAN? (Choose two.)
- A. Two or more PDBs can be duplicated with the same RMAN DUPLICATE command.
- B. All tablespaces belonging to a PDB must be duplicated when duplicating the PDB.
- C. A user with SYSDBA or SYSBACKUP must be logged in with RMAN to the PDB to duplicate it.
- D. CDB$ROOT and PDB$SEED are automatically duplicated.
- E. The auxiliary instance is automatically created with ENABLE_PLUGGABLE_DATABASE = TRUE.
Answer: A,D
NEW QUESTION # 46
Choose two. Which two are true in Oracle 19c and later releases?
- A. Schema Only accounts can be granted administrator privileges.
- B. All the Oracle-supplied accounts are Schema Only accounts.
- C. If the password file location changes, then the instance must be restarted.
- D. Unified Auditing can be configured to audit only events that are issued directly by an audited user.
- E. Unified Auditing can be configured to audit only events that are issued indirectly by all users
Answer: A,D
NEW QUESTION # 47
Choose three. Which three actions will add a resource to an Oracle Restart configuration?
- A. creating a database service using Oracle Database Configuration Assistant (DBCA)
- B. creating a database service using DBMS_SERVICE.CREATE_SERVICE
- C. creating an Oracle Automatic Storage Management (ASM) instance with ASM Configuration Assistant (ASMCA)
- D. creating a database using the CREATE DATABASE SQL statement
- E. creating an Oracle Database service by modifying the SERVICE_NAMES parameter
- F. creating a disk group using the CREATE DISKGROUP SQL statement
Answer: A,C,D
NEW QUESTION # 48
Which three are true about Optimizer Statistics Advisor? (Choose three.)
- A. It is part of the DBMS_ADVISORpackage.
- B. It always analyzes all schemas in the database.
- C. It can be run only manually.
- D. It is part of the DBMS_STATSpackage.
- E. It runs automatically every night by default.
- F. It can recommend changes to improve the statistics gathering process.
Answer: B,D,F
Explanation:
Explanation/Reference: https://oracle-base.com/articles/12c/optimizer-statistics-advisor-12cr2
NEW QUESTION # 49
Which two are true about SQL Performance Analyzer (SPA)? (Choose two.)
- A. It provides before and after execution statistics for each SQL statement in the analysis task
- B. It is integrated with the SQL Access Advisor.
- C. It predicts the impact of system changes on SQL workload response time.
- D. It offers fine-grained analysis of all the SQL statements in the analysis task as a group.
- E. SQL statements that were originally run concurrently are run concurrently by SPA.
Answer: C,D
NEW QUESTION # 50
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The 1Z0-083 exam covers a wide range of topics, including database architecture, backup and recovery, performance tuning, security, and high availability. Candidates are expected to have a strong working knowledge of Oracle database management, including the ability to install, configure, and manage Oracle databases, as well as troubleshoot common issues that may arise. They should also be familiar with advanced features like Oracle Real Application Clusters (RAC) and Oracle Data Guard.
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