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Understanding functional and technical aspects of Oracle Database Administration II Exam Number: 1Z0-083
The following will be discussed in the ORACLE 1Z0-083 exam dumps:
- Backup and Duplicate - Oracle Database: Managing Multitenant Architecture Ed 1
- Manage PDB service names and connections
- Duplicate an active PDB
- Configure and create a CDB
- Change the different modes and settings of PDBs
- Create a new PDB from the CDB seed
- Explore the structure of PDBs
- Manage startup, shutdown and availability of CDBs and PDBs
- Perform Backup and Recover CDBs and PDBs
- Duplicate a Database
- Upgrade an Oracle Database
- Evaluate the impact of parameter value changes
- Tuning SQL Statements
- Control CDB and PDB resource usage with the Oracle Resource Manager
Oracle 1Z0-083 certification exam is ideal for database administrators, database architects, and IT professionals who work with Oracle databases. It is a challenging exam that requires in-depth knowledge and hands-on experience with databases. Oracle Database Administration II certification not only validates the candidate's skills but also enhances their career prospects by increasing their marketability and earning potential. With the Oracle 1Z0-083 certification, professionals can demonstrate their expertise and commitment to excellence in database administration.
NEW QUESTION # 35
You accidentally drop the CUSTOMERS table, and then recover it by using the FLASHBACK TABLE command. Which two statements are true about the dependent objects of the CUSTOMERS table?
- A. LOB segments associated with the CUSTOMERS table are flashed back.
- B. Only the primary key constraint created for the table is flashed back, whereas all other indexes must be retrieved separately.
- C. All the triggers associated with the table are flashed back but are disabled.
- D. Materialized views that use the CUSTOMERS table are flashed back.
- E. All the constraints defined on the table, except the referential integrity constraints, are flashed back.
Answer: A,E
NEW QUESTION # 36
Which three are true about thresholds, metrics, and server-generated alerts? (Choose three.)
- A. Metrics are statistical counts for a specific unit.
- B. A space usage management alert is automatically cleared after the underlying problem is resolved.
- C. All metrics are instance related.
- D. STATISTICS_LEVEL must be set to ALL to generate alerts.
- E. They are generated by SMON when a tablespace is 97% full.
- F. Cleared stateful alerts are displayed by querying DBA_ALERT_HISTORY.
Answer: A,B,F
NEW QUESTION # 37
Which two are true about an Oracle gold image-based installation in Oracle 18c and later releases? (Choose two.)
- A. It does not require the setup wizard.
- B. It can only install and configure Oracle Database software. The database has to be created separately.
- C. It can be used for both Oracle Database and Oracle Grid Infrastructure installation.
- D. It uses a single RPM that automatically extracts and installs the Oracle Database software.
- E. It can be used to install and upgrade Oracle Database for single-instance and cluster configurations.
Answer: C,E
NEW QUESTION # 38
You accidentally drop the CUSTOMERS table, and then recover it by using the FLASHBACK TABLE command.
Which two statements are true about the dependent objects of the CUSTOMERS table?
- A. LOB segments associated with the CUSTOMERS table are flashed back.
- B. Only the primary key constraint created for the table is flashed back, whereas all other indexes must be retrieved separately.
- C. All the triggers associated with the table are flashed back but are disabled.
- D. Materialized views that use the CUSTOMERS table are flashed back.
- E. All the constraints defined on the table, except the referential integrity constraints, are flashed back.
Answer: A,E
NEW QUESTION # 39
A container database (CDB) contains two pluggable databases PDB1 and PDB2.
The LOCAL_UNDO_ENABLEDdatabase property is set to FALSEin the CDB.
Data file 24 of PDB2was deleted and you need to restore and recover it.
The only RMAN backup that exists was created with the BACKUP DATABASEcommand while connected to CDB$ROOT.
Which three are true? (Choose three.)
- A. Data file 24 can be recovered while connected to CDB$ROOT.
- B. Data file 24 can be restored only while connected to PDB2.
- C. Data file 24 can be restored only while connected to CDB$ROOT.
- D. Data file 24 can be recovered only while connected to PDB2.
- E. Data file 24 can be recovered while connected to PDB2.
- F. Data file 24 can be restored and recovered while connected to CDB$ROOT.
Answer: A,E,F
Explanation:
Restoration AND recovery can be done by CDB$ROOT. Recovery can be done by CDB$ROOT or the PDB in question.
https://oracle-base.com/articles/12c/multitenant-rman-backup-recovery-cdb-and-pdb-
12cr1#tablespace-and-datafile-backups
NEW QUESTION # 40
Choose the best answer. Examine this configuration: 1. CDB1 is an Oracle Database 12c Release 2 container database (CDB). 2. PDB1 and PDB2 are two pluggable databases (PDBs) in CDB1. After successfully performing all the preupgrade tasks, you execute these commands from the Oracle Database 18c environment: $ export ORACLE_SID=cdb1 $ sqlplus / as sysdba SQL> STARTUP UPGRADE; SQL> SHOW pdbs CON_ID CON_NAME OPEN MODE RESTRICTED ---------------------------------------------------------------2 PDB$SEED 3 PDB1 4 PDB2 MIGRATE YES MOUNTED YES MOUNTED YES SQL> ALTER PLUGGABLE DATABASE pdb1 OPEN UPGRADE; Pluggable database altered. SQL> exit $ $ORACLE_HOME/perl/bin/perl catctl.pl -C 'PDB2' What is the outcome?
- A. Only CDB$ROOT and PDB$SEED are upgraded.
- B. CDB$ROOT, PDB$SEED, PDB1, and PDB2 are upgraded.
- C. Only CDB$ROOT, PDB$SEED, and PDB2 are upgraded.
- D. It fails because PDB$SEED is in MIGRATE state.
- E. It fails because PDB2 is not in UPGRADE state.
- F. Only CDB$ROOT, PDB$SEED, and PDB1 are upgraded.
Answer: B
NEW QUESTION # 41
Which three are true about requirements for various FLASHBACK operations? (Choose three.)
- A. FLASHBACK version query requires undo to retrieve all versions of a row that existed between two points in time.
- B. FLASHBACK DATA ARCHIVE requires undo to store all versions of all rows of a table being tracked.
- C. FLASHBACK transaction query requires undo to retrieve all versions of a row that existed between two points in time.
- D. FLASHBACK version query requires that the RECYCLEBIN parameter be set to ON.
- E. FLASHBACK drop requires undo to retrieve all versions of a row that existed two points in time.
- F. FLASHBACK drop requires that the RECYCLEBIN parameter be set to ON.
Answer: A,C,F
NEW QUESTION # 42
Examine this configuration:
23.CDB1and CDB2are two container databases.
24.PDB1is a pluggable database in CDB1.
25.PDB1_C1_SRVis a service for PDB1.
26.CDB1_LINKis a database link in CDB2referring to PDB1.
27.CDB2is also an entry in tnsnames.orapointing to the CDB2database default service.
You execute these commands successfully:
$ sqlplus sys/oracle_4U@cdb2 as sysdba
SQL> CREATE PLUGGABLE DATABASE PDB1
FROM PDB1@CDB1_LINK
SERVICE_NAME_CONVERT=('PDB1_C1_SRV','PDB1_C2_SRV');
Which two are true? (Choose two.)
- A. PDB1_C1_SRV in CDB1 will be renamed PDB1_C2_SRV.
- B. PDB1 will be created in CDB2 and automatically opened.
- C. PDB1 will be created in CDB2 and left in MOUNT state.
- D. PDB1_C2_SRV will be created and started automatically.
- E. PDB1_C2_SRV will be created but not started.
Answer: C,E
Explanation:
After you create the PDB, it is in mounted mode, and its status is NEW.
NEW QUESTION # 43
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 full copy of the source PDB.
- B. A PDB snapshot is always a sparse 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 can be created from a stand-alone clone PDB.
- E. A PDB snapshot depends on a storage snapshot which can only be stored on specific file systems.
- F. A PDB snapshot depends on a storage snapshot which can be stored on any file system.
- G. A snapshot copy PDB depends on a storage snapshot which can be stored on any file system.
Answer: C,D
Explanation:
G:
https://docs.oracle.com/en/database/oracle/oracle-database/18/multi/cloning-a-pdb.html#GUID- F26C8A55-2465-475A-905A-83BD2E68AE6E and then create a SNAPSHOT COPY PDB from the standalone PDB.
C:
Storage requirements depend on the setting of the CLONEDB initialization parameter:
CLONEDB=FALSE
The underlying file system for the source PDB files must support storage snapshots. Such file systems include Oracle Automatic Storage Management Cluster File System (Oracle ACFS) and Direct NFS Client storage. Oracle Exadata supports snapshot copy functionality on ASM configured with sparse ASM grid disks.
CLONEDB=TRUE
The underlying file system for the source PDB files can be any local file system, network file system (NFS), or clustered file system that has Direct NFS enabled and supports sparse files.
Most UNIX systems meet these requirements, including Oracle ACFS and ZFS. However, when CLONEDB=TRUE, the source PDB must remain in open read-only mode when clones exist.
NEW QUESTION # 44
A container database (CDB) contains two pluggable databases PDB1 and PDB2.
The LOCAL_UNDO_ENABLEDdatabase property is set to FALSEin the CDB.
Data file 24 of PDB2was deleted and you need to restore and recover it.
The only RMAN backup that exists was created with the BACKUP DATABASEcommand while connected to CDB$ROOT.
Which three are true? (Choose three.)
- A. Data file 24 can be recovered while connected to CDB$ROOT.
- B. Data file 24 can be recovered while connected to PDB2.
- C. Data file 24 can be restored only while connected to CDB$ROOT.
- D. Data file 24 can be restored only while connected to PDB2.
- E. Data file 24 can be recovered only while connected to PDB2.
- F. Data file 24 can be restored and recovered while connected to CDB$ROOT.
Answer: A,D,F
NEW QUESTION # 45
Choose two. Which two are true about backup set compression using RMAN default compression?
- A. Unused blocks below the high water mark are backed up.
- B. Compression can be done only for locally managed tablespaces.
- C. Binary compression adds CPU overhead to backup operations.
- D. Compressed backups can be written only to media.
- E. Compressed backups cannot have a section size defined.
Answer: C,E
NEW QUESTION # 46
Which three are true about backup, restore, and recovery operations done without using Recovery Manager (RMAN)? (Choose three.)
- A. An Oracle database can be restored from backup files copied using O/S utilities.
- B. Backing up a database in ARCHIVELOG mode using O/S utilities requires that the database instance be started and the database be in OPEN state.
- C. Oracle archive log backups, copied using an O/S utility, can be added to the RMAN catalog as a backup set.
- D. Backing up a database in NOARCHIVELOGmode using O/S utilities requires that the database instance be started and the dataabse be in the MOUNT state.
- E. Backing up a database in ARCHIVELOG mode using O/S utilities requires that the database instance be started and the database be in MOUNT state.
- F. Oracle data file backups, copied using an O/S utility, can be added to the RMAN catalog as IMAGE COPIES.
- G. Backing up a database in NOARCHIVELOG mode using O/S utilities requires that the database instance be shut down.
Answer: A,F,G
Explanation:
A,B,G are not right because the question is telling us 'without RMAN'. To put it in mount/open or so, are necessary only in case of using RMAN. Otherwise, using OS Utils, DB must be closed or maximum in NOMOUNT state.
F is incorrect as according to the following note only archivelog, backuppiece, controlfilecopy or datafilecopy can be cataloged
https://docs.oracle.com/cd/B19306_01/backup.102/b14194/rcmsynta011.htm
NEW QUESTION # 47
The CATDB12c database contains an Oracle Database version 12c catalog schema owned by the RC12C user. The RCAT11 database contains an Oracle Database version 11g catalog schema owned by the RC11 user in which several databases are registered. Both the databases are open. You execute the RMAN commands: RMAN> CONNECT CATALOG rcl2c/passl2c@catdbl2c RMAN> IMPORT CATALOG rcll/pwdcatll@ractll Which two tasks are performed as part of the import?
- A. Local and global stored scripts that have the same name as existing scripts in the RC12C catalog are automatically renamed.
- B. Imported databases are unregistered from the RC11 catalog.
- C. All databases registered in the RC11 catalog are registered in the RC12C catalog.
- D. Databases from the RC12C catalog are implicitly unregistered if the RC11 catalog has registered databases with same name.
- E. Recovery catalog is resynchronized with the control files of the registered databases.
Answer: A,C
NEW QUESTION # 48
Oracle Managed Files (OMF) is enabled in a CDB and this command is successfully executed:
Which three are true?
- A. Application PDBs that are subsequently created in the APP1 application container will be cloned from APP1$SEED.
- B. An application root PDB is created for APP1.
- C. Application PDBs that are subsequently created in the APP1 application container will be cloned from PDB$SEED.
- D. A default service Is created for the application root APP1.
- E. An application seed PDB Is created for APP1.
- F. APP1 can never be unplugged.
Answer: A,B,D
NEW QUESTION # 49
Which three are true about SGA memory management in a multitenant database? (Choose three.)
- A. SGA_MIN_SIZE cannot be set for a PDB.
- B. Setting DB_CACHE_SIZE for a PDB guarantees a minimum amount of Database Buffer Cache memory for that PDB.
- C. Setting SGA_TARGET for a PDB guarantees a minimum amount of SGA memory for that PDB.
- D. The SHARED_POOL_SIZE setting for a PDB can be up to 80%of the SHARED_POOL_SIZE setting of the root container.
- E. Setting SHARED_POOL_SIZE for a PDB guarantees a minimum amount of Shared Pool memory for that PDB.
- F. The SGA_TARGET setting for a PDB cannot exceed 50%of the SGA_TARGET value of the root container.
Answer: B,E,F
NEW QUESTION # 50
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To prepare for the Oracle 1Z1-083 exam, candidates need to have a thorough understanding of Oracle database administration concepts and practical experience in managing Oracle databases. They can use a variety of resources such as Oracle documentation, online training courses, and practice exams to supplement their knowledge and skills.
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