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1Z0-083 Exam with Guarantee Updated 283 Questions
Oracle 1Z0-083 (Oracle Database Administration II) Certification Exam is a professional certification exam offered by Oracle Corporation. It is designed for database administrators who have a strong knowledge of Oracle Database 19c and its related technologies. 1Z0-083 exam tests the candidate's ability to perform complex database administration tasks such as database diagnostics, performance tuning, backup and recovery, and high availability. Passing 1Z0-083 exam validates the candidate's expertise in Oracle Database Administration and proves their ability to handle complex database environments.
NEW QUESTION # 123
Which three actions are performed by Database Upgrade Assistant (DBUA)?
- A. It Increases tablespace size, if required, to meet upgrade requirements.
- B. It sets all user tablespaces to "read-only" before starting the upgrade.
- C. It recompiles all stored pl/sql code by using utlrp.sql.
- D. It empties the recycle bin.
- E. It performs prerequisite checks to verify if the Oracle database is ready for upgrade.
- F. It removes the audsys schema and the audit_admin and audit_viewer roles.
Answer: B,D,F
NEW QUESTION # 124
Which two are true about the character sets used in an Oracle database? (Choose two.)
- A. Unicode enables information from any language to be stored using a single character set.
- B. Single-byte character sets provide better performance than multibyte character sets.
- C. Single-byte character sets always use 7-bit encoding schemes.
- D. Multibyte character sets allow more efficient space utilization than single byte character sets.
- E. Unicode is the only supported character set for Oracle databases created using Database Configuration Assistant (DBCA).
- F. Single-byte character sets always use 8-bit encoding schemes.
Answer: A,B
NEW QUESTION # 125
Which three are true about Oracle Restart?
- A. It can manage Oracle Database instances, Oracle Net Listeners, and Oracle Automatic Storage Management instances.
- B. It is used in both clustered and non-clustered environments.
- C. It runs from the Oracle Grid Infrastructure home.
- D. You can add and remove components from an Oracle Restart configuration with Server Control (SRVCTL) commands.
- E. The Server Control (SRVCTL) utility can be used to start and stop Oracle Restart.
- F. If you shut down a database instance with SQL*Plus, Oracle Restart interprets this as a database failure and attempts to restart the instance.
Answer: A,B,D
NEW QUESTION # 126
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 pull method to restore files using image copies
- B. RMAN uses the push method to transfer image copies
- C. RMAN uses the pull method to restore files using backup sets
- D. RMAN uses the push method to transfer backup sets
Answer: C
NEW QUESTION # 127
Which three are true about managing memory components in an Oracle database instance? (Choose three.)
- A. With Automatic Shared Memory Management, the database instance can increase the Large Pool size by reducing the Shared Pool size.
- B. Automatic Memory Management must be used together with locking the System Global Area into physical memory.
- C. On Line Transaction Processing systems often use less Program Global Area than Decision Support Systems.
- D. Automatically tuned and resized System Global Area components will always revert to their initial sizes after an instance restart.
- E. With Automatic Shared Memory Management, the database instance can increase the Program Global Area size by reducing the System Global Area size.
- F. With Automatic Memory Management, the database instance can increase the System Global Area size by reducing the Program Global Area size.
Answer: A,C,E
Explanation:
Explanation/Reference: https://docs.oracle.com/database/121/TGDBA/tune_shared_pool.htm
NEW QUESTION # 128
Choose three. Which three are true about creating container databases (CDBs) and pluggable databases (PDBs) in Oracle 19c and later releases?
- A. A PDB snapshot can be a full copy of a source PDB.
- B. A PDB snapshot depends on an existing storage snapshot of the source PDB.
- C. A CDB can be duplicated using Recovery Manager (RMAN) with no configuration required before starting the duplication.
- D. A CDB can be duplicated using the Database Configuration Assistant (DBCA) in silent mode with no configuration required before starting the duplication.
- E. A snapshot copy PDB can be a full copy of a source PDB.
- F. A snapshot copy PDB does not depend on an existing storage snapshot of the source PDB.
- G. A PDB snapshot can be a sparse copy of a source PDB.
Answer: B,C,E
NEW QUESTION # 129
Which two are true about Oracle Optimizer Statistics, their use, and their collection? (Choose two.)
- A. The Statistics Advisor generates actions for all recommendations.
- B. Index balanced B*Tree height is considered when evaluating the cost of using an index.
- C. Statistics collected using DBMS_STATS always yield the best optimizer result.
- D. The Statistics Advisor can help recommend the best way to gather statistics.
- E. The number of table rows is considered when evaluating the cost of accessing a table using an index.
Answer: B,D
NEW QUESTION # 130
Application PDBs, SALES_APP1 and SALES_APP2, must be created and they must access common tables of the SALES_APP application.
Examine these steps:
1. Install the SALES_APP application, including the common tables, in the application root.
2. Install the SALES_APP application in the application root and the common tables in both the CDB root and the application root.
3. Create an application seed.
4. Install the SALES_APP application in the application seed.
5. Create the SALES_APP1 and SALES_APP2 application PDBs.
6. Sync the SALES_APP1 and SALES_APP2 application PDBs with the application root.
7. Sync the SALES_APP1 and SALES_APP2 application PDBs with the application seed.
8. Sync the application seed with the application root.
Which are the minimum required steps in the correct sequence?
- A. 1,3,5,6,7
- B. 3,4,1,6,8
- C. 1,3,5,7
- D. 2,5,6
- E. 1,5,6
Answer: E
NEW QUESTION # 131
Which two are true about creating pluggable databases (PDBs) using snapshots in Oracle 19c and later releases? (Choose two.)
- A. A PDB snapshot is always a sparse copy of the source PDB.
- B. A PDB snapshot is always a full copy of the source PDB.
- C. A snapshot copy PDB depends on a storage snapshot which can only be stored on specific file systems.
- D. A snapshot copy PDB depends on a storage snapshot which can be stored on any file system.
- E. A snapshot copy PDB can be created from a stand-alone clone PDB.
- F. A PDB snapshot depends on a storage snapshot which can be stored on any file system.
- G. A PDB snapshot depends on a storage snapshot which can only be stored on specific file systems.
Answer: B,G
Explanation:
Explanation/Reference: https://docs.oracle.com/en/database/oracle/oracle-database/18/multi/administering-pdb- snapshots.html#GUID-35B03C37-00BA-4945-BF20-9A7C4C541955
NEW QUESTION # 132
Choose three. You must migrate a non-CDB Oracle 11g Database to a CDB without first performing an upgrade to the non-CDB. User-defined objects are stored in several tablespaces in the non-CDB. Which three methods can you use?
- A. cloning the non-CDB as a PDB
- B. Data Pump full transportable database
- C. replication using GoldenGate
- D. the DBMS_PDB package
- E. Data Pump transportable tablespaces
- F. Data Pump full database export and import
Answer: C,E,F
NEW QUESTION # 133
PDB1and PBD2are pluggable databases in CDB1.
Examine these commands:
CDB1is then restarted.
Which three are true? (Choose three.)
- A. PDB1 will be opened READ WRITE.
- B. PDB2 will be MOUNTED.
- C. PDB$SEED will be opened READ ONLY.
- D. PDB1 will be MOUNTED.
- E. PDB2 will be opened READ WRITE.
- F. PDB$SEED will be MOUNTED.
Answer: A,B,C
Explanation:
https://oracledbwr.com/oracle-pluggable-database-automatic-startup/
NEW QUESTION # 134
Which two are true about SQL Performance Analyzer (SPA)? (Choose two.)
- A. It predicts the impact of system changes on SQL workload response time.
- B. It offers fine-grained analysis of all the SQL statements in the analysis task as a group.
- C. It provides before and after execution statistics for each SQL statement in the analysis task
- D. SQL statements that were originally run concurrently are run concurrently by SPA.
- E. It is integrated with the SQL Access Advisor.
Answer: A,B
Explanation:
Explanation/Reference: https://www.oracle.com/technetwork/database/manageability/spa-ow09-131455.pdf (4)
NEW QUESTION # 135
Which two are true about monitoring waits for sessions and services?
- A. V$SESSION_EVENT displays all waits events for those events that have occurred at least once for sessions that have now terminated.
- B. V$SERVICE_EVENT displays wait counts for every wait event for each service even including counts of zero for waits that never occurred.
- C. V$SESSION_WAIT and V$SESSION both contain details of the event on which a non-waiting session last waited.
- D. V$SESSION_WAIT_CLASS displays waits broken down by wait class only for terminated sessions.
- E. V$SESSION_WAIT and V$SESSION both contain details of the event on which a waiting session is currently waiting.
Answer: B,E
NEW QUESTION # 136
Which three are true about Automatic Workload Repository (AWR) and Automatic Database Diagnostic Monitor (ADDM) in an Oracle multitenant environment? (Choose three.)
- A. ADDM can run in a nonroot container.
- B. AWR reports can be generated while connected to any container.
- C. All AWR data is stored in the CDB$ROOT SYSAUX tablespace.
- D. No AWR data is stored in the CDB$ROOT SYSAUX tablespace.
- E. AWR snapshots can be created in a PDB.
- F. AWR snapshots can be created in CDB$ROOT.
Answer: B,D,E
NEW QUESTION # 137
Which three are true about performing an Oracle Database install on Linux?
- A. The runfixup.sh script can install missing RPMs.
- B. The Oracle database administrator must be granted access to the root operating system account to run root privileged scripts.
- C. It can be done after installing Grid Infrastructure for a Standalone Server.
- D. It allows you to select the languages supported by the Oracle database server.
- E. The Oracle Preinstallation RPM can be used to configure the Oracle database installation owner, the Oracle Inventory group, and an Oracle administrative privileges group.
- F. It can be done before installing Grid Infrastructure for a Standalone Server.
- G. The Oracle Preinstallation RPM must be used to configure the Oracle database installation owner, the Oracle Inventory group, and an Oracle administrative privileges group.
Answer: D,F,G
NEW QUESTION # 138
Which two are true about an RPM-based Oracle Database installation? (Choose two.)
- A. It uses a service configuration script to create a single-instance database as part of the installation.
- B. It includes the Oracle Preinstallation RPM.
- C. From Oracle Database 18c, a single RPM can be used to install only Oracle Database Server for a single instance.
- D. It performs a software-only Oracle Database installation.
- E. It requires an Unbreakable Linux Network (ULN) subscription.
Answer: A,D
Explanation:
https://docs.oracle.com/en/database/oracle/oracle-database/18/ladbi/running-rpm-packages-to- install-oracle-database.html#GUID-BB7C11E3-D385-4A2F-9EAF-75F4F0AACF02
NEW QUESTION # 139
Which two statements are true about indexes and their administration in an Oracle database?
- A. An index can be scanned to satisfy a query without the indexed table being accessed.
- B. A non-unique index can be converted to a unique index using a Data Definition Language (DDL) command.
- C. An index is always created by scanning the key columns from the underlying table.
- D. An invisible index is maintained when a Data Manipulation Language (DML) command is per- formed on its underlying table.
- E. A descending index is a type of bitmapped index.
Answer: A,D
NEW QUESTION # 140
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