2022 TrainingDumps Oracle 1Z0-083 Dumps and Exam Test Engine
Oracle 1Z0-083 DUMPS WITH REAL EXAM QUESTIONS
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NEW QUESTION 84
Examine this configuration:
To recover from this critical failure, you execute these commands:
What will be the outcome?
A)
B)
C)
D)
E)
- A. Option C
- B. Option A
- C. Option E
- D. Option B
- E. Option D
Answer: B
NEW QUESTION 85
Examine this output:
Which two are true?
- A. Any PDB not specified in the plan will be unable to execute statements in parallel.
- B. Any PDB not specified in the plan will be able to use a maximum of 16.5% of the available system resources.
- C. PDB2 is guaranteed at least 25% of the available parallel execution processes if there is enough demand.
- D. PDB1 is always limited to 40% of the available system resources regardless of demand.
- E. PDB3 can use all available parallel execution processes at times.
- F. PDB3 is guaranteed to receive at least 20% of the available system resources if there is enough demand.
Answer: A,C
NEW QUESTION 86
Which two are true about the execution of operating system scripts starting from Oracle Database 19c? (Choose two.)
- A. root.sh can be executed automatically by the Database installer only by using sudo credentials.
- B. The sudo password can be specified in a response file.
- C. root.sh can be executed automatically by the Database Installer only if it is provided with root credentials.
- D. The sudo password must be specified in a response file.
- E. orainstRoot.sh can be executed automatically by the Database installer by using sudo or root credentials.
- F. The root password cannot be specified in a response file.
Answer: E,F
NEW QUESTION 87
While backing up to the Oracle Fast Recovery Area (FRA), you determined the backup is taking too long and suspect a performance bottleneck.
Which three are true about diagnosing and tuning these problems? (Choose three.)
- A. If an RMAN BACKUP VALIDATE command takes noticeably less than an actual backup, then write I/O is a likely bottleneck.
- B. If an RMAN BACKUP VALIDATE command takes roughly the same time as an actual backup, then both read and write I/O are likely bottlenecks.
- C. Data files with a high value in V$BACKUP_SYNC_IO.DISCRETE_BYTES_PER_SECOND are a potential performance bottleneck when synchronous I/O is used.
- D. Data files with a high value in V$BACKUP_ASYNC_IO.SHORT_WAITS are a potential performance bottleneck when asynchronous I/O is used.
- E. Setting DBWR_IO_SLAVESto a non zero value can improve backup performance when using asynchronous I/O/
- F. If an RMAN BACKUP VALIDATE command takes roughly the same time as an actual backup, then read I/O is a likely bottleneck.
- G. Setting DBWR_IO_SLAVES to a non zero value can improve backup performance when using synchronous I/O.
Answer: A,C,G
NEW QUESTION 88
Which three are true about Automatic Workload Repository (AWR)? (Choose three.)
- A. AWR data is stored in the SYSTEMtablespace.
- B. The taking of AWR snapshots can be disabled.
- C. By default, AWR snapshots are taken every 60 minutes.
- D. Its collection level is determined by the value of the STATISTICS_LEVELdatabase parameter.
- E. By default, AWR snapshots are retained for 7 days.
Answer: B,C,D
Explanation:
Explanation/Reference: https://docs.oracle.com/cd/B28359_01/server.111/b28320/initparams240.htm#REFRN10214
NEW QUESTION 89
Examine this configuration:
1. CDB1 is a container database.
2. PDB1 and PDB2 are pluggable databases in CDB1.
3. PDB1 and PDB2 are open in read write mode.
You execute these commands successfully:
Which two are true?
- A. Uncommitted transactions in PDB1 have been rolled back.
- B. CDB1 is in mount state
- C. PDB1 is closed.
- D. CDB1 is shut down.
- E. Uncommitted transactions in CDB1 and pdbi have been rolled back.
Answer: B,E
NEW QUESTION 90
Which three are true about requirements for various FLASHBACKoperations? (Choose three.)
- A. FLASHBACKdrop requires that the RECYCLEBIN parameter be set to ON.
- B. FLASHBACKversion query requires undo to retrieve all versions of a row that existed between two points in time.
- C. FLASHBACK DATA ARCHIVErequires undo to store all versions of all rows of a table being tracked.
- D. FLASHBACKversion query requires that the RECYCLEBINparameter be set to ON.
- E. FLASHBACKdrop requires undo to retrieve all versions of a row that existed between two points in time.
- F. FLASHBACKtransaction query requires undo to retrieve all versions of a row that existed between two points in time.
Answer: A,D,F
Explanation:
Explanation/Reference:
https://books.google.com.pk/books?id=0iwrL9P25Z0C&pg=PA35&lpg=PA35&dq=FLASHBACK+transaction
+query+requires+undo+to+retrieve+all+versions+of+a+row+that+existed+between+two+points+in
+time&source=bl&ots=MJnYl5CZ1u&sig=ACfU3U0dWP-NPd-
U8uu3zbaoi3YZzT0FTQ&hl=en&sa=X&ved=2ahUKEwigi5_Jl9joAhXzUBUIHUh4DksQ6AEwAnoECAsQJg#v=o nepage&q=FLASHBACK%20transaction%20query%20requires%20undo%20to%20retrieve%20all%20versions
%20of%20a%20row%20that%20existed%20between%20two%20points%20in%20time&f=false
https://docs.oracle.com/cd/E18283_01/server.112/e17120/tables011.htm
NEW QUESTION 91
Which three actions are performed by the Oracle Preinstallation RPM, oracle-database-server-xxxx- preinstall, for Oracle Grid Infrastructure, where xxxx is the Oracle version and release? (Choose three.)
- A. creating thte oraInventory (oinstall) group
- B. creating the grid OS user
- C. creating the oracleOS user
- D. performing checks to ensure minimum configuration requirements for Oracle Grid Infrastructure are met
- E. creating the OSDBA (dba) group
- F. configuring the OS for Oracle Automatic Storage Management shared storage access
Answer: A,E,F
Explanation:
Explanation/Reference: https://docs.oracle.com/cd/E11882_01/install.112/e41961/prelinux.htm#CWLIN2932
NEW QUESTION 92
Which two are true about common objects? (Choose two.)
- A. They can exist in CDB$ROOTand an application root.
- B. They can exist in user-defined schemas only in application containers.
- C. They can be created only in an application root.
- D. They can be created only in CDB$ROOT.
- E. They can be only metadata-linked in an application container.
- F. They can be extended data-linked in CDB$ROOT.
Answer: C,F
Explanation:
Explanation/Reference: https://blog.toadworld.com/2017/08/01/oracle-multi-tenant-application-containers-part-iii-sharing-of- data-in-application-common-objects
NEW QUESTION 93
Which three are true about upgrading Oracle Grid Infrastructure? (Choose three.)
- A. The newer version is installed in a separate Oracle Grid Infrastructure home on the same server as the existing version.
- B. An existing Oracle base can be used.
- C. The upgrade process will automatically install all mandatory patches for the current version of Oracle Grid Infrastructure.
- D. A direct upgrade can be performed only from the immediately preceding Oracle Grid Infrastructure version.
- E. Only the griduser can perform the upgrade.
- F. Existing Oracle Database instances must be shut down before starting the upgrade.
Answer: C,E,F
Explanation:
Explanation/Reference: https://docs.oracle.com/database/121/CWLIN/procstop.htm#CEGEDCDB
NEW QUESTION 94
Which two are true about common objects? (Choose two.)
- A. They can be created only in an application root.
- B. They can exist in user-defined schemas only in application containers.
- C. They can be extended data-linked in CDB$ROOT.
- D. They can be created only in CDB$ROOT.
- E. They can be only metadata-linked in an application container.
- F. They can exist in CDB$ROOT and an application root.
Answer: A,B
Explanation:
Reference:
https://blog.toadworld.com/2017/08/01/oracle-multi-tenant-application-containers-part-iii-sharing- of-data-in-application-common-objects
NEW QUESTION 95
When backing up to the Oracle Fast Recovery Area (FRA), you determine that the backup takes too long and suspect a performance bottleneck.
Which two are true about diagnosing and tuning these problems?
- A. Data files with a high value in v$backup_sync_io.discrete_bytes_per_second are a potential performance bottleneck when synchronous I/O is used.
- B. If an rman backup validate command takes roughly the same time as an actual backup, then both read and write I/O are likely bottlenecks.
- C. If an rman backup validate command takes noticeably less time than an actual backup, then write I/O is a likely bottleneck.
- D. If an rman backup validate command takes roughly the same time as an actual backup, then read I/O is a likely bottleneck.
- E. Data files with a high value in v$backup_async_io.short_waits are a potential performance bottleneck when asynchronous I/O is used.
Answer: D,E
NEW QUESTION 96
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 cannot be recovered while the CDB is opened.
- B. Data file 24 must be recovered while PDB2 is closed.
19c: PDB SYSTEM or UNDO Tablespace Recovery: The CDB and all other PDBs can be left opened. 1. Connect to PDB 2. Shutdown abort the PDB, if its not automatically done. sqlplus sys@sales_pdb as sysdba sql> SHUTDOWN ABORT; OR ALTER PLUGGABLE DATABASE CLOSE ABORT; rman target sys@slaes_pdb rman> restore database; rman> recover database; rman> alter pluggable database sales_pdb open; - C. Data file 24 can be recovered while PDB2 is opened.
- D. Data file 24 must be recovered while the CDB is opened.
- E. Data file 24 can be recovered while CDB$ROOT and PDB$SEED are opened.
Answer: C,D
NEW QUESTION 97
Examine this command:
$ rhpctl move database -sourcehorae Oracle_horne_path -destinationhome Oracle_home_path For which two purposes can you use this command?
- A. to switch back to the previous Oracle home as part of a rollback operation
- B. to switch to a read-only Oracle home
- C. to switch to a patched Oracle Database home
- D. to switch an existing Oracle Database home to a newer release of Oracle software on the same server
- E. to switch the Oracle Database home when using a centralized Rapid Home Provisioning server
Answer: C
NEW QUESTION 98
A database is configured in archivelog mode.
A full RMAN backup exists but no control file backup to trace has been taken.
A media failure has occurred.
In which two scenarios is incomplete recovery required?
- A. after losing all members of the current online redo log group
- B. after losing an undo tablespace that is in use
- C. after losing a sysaux tablespace data file
- D. after losing all members of an inactive online redo log group
- E. after losing all copies of the control file
Answer: C,E
NEW QUESTION 99
A database is configured in ARCHIVELOGmode.
Full RMAN backups are taken and no backup to trace has been taken of the control file.
A media failure has occurred.
In which two scenarios is complete recovery possible? (Choose two.)
- A. when any archived log from, before, or after the most recent backup is corrupt.
- B. after losing the SYSTEMtablespace
- C. after losing an archived log from after the most recent backup
- D. after losing an archived log from before the most recent backup
- E. after losing all copies of the control file
Answer: A,D
NEW QUESTION 100
Which three are true about Automatic Workload Repository (AWR), Automatic Database Diagnostic Monitor (ADDM), and the Manageability Monitor (MMON) background process? (Choose three.)
- A. ADDM can recommend shrinking the buffer cache.
- B. AWR snapshots must be deleted when no longer required by ADDM.
- C. By default, AWR snapshots are automatically purged after eight days.
- D. ADDM performs its analysis only when a DBA requests it.
- E. ADDM can recommend extending the buffer cache.
- F. By default, MMON creates an AWR snapshot every 30 minutes.
Answer: A,B,C
Explanation:
Explanation/Reference: https://books.google.com.pk/books?id=DeQkU5E75DUC&pg=PA869&lpg=PA869&dq=By+default,
+AWR+snapshots+are+automatically+purged+after+eight
+days&source=bl&ots=DfoGmJfCMy&sig=ACfU3U0Pf2RgIs72LUV4HUzs5UIXI8sXEQ&hl=en&sa=X&ved=2ah UKEwjb8bKhu9noAhUwTxUIHRpYAuMQ6AEwA3oECAsQLA#v=onepage&q=By%20default%2C%20AWR%
20snapshots%20are%20automatically%20purged%20after%20eight%20days&f=false
NEW QUESTION 101
Which two are true about an Oracle gold image-based installation in Oracle 18c and later releases? (Choose two.)
- A. It uses a single RPM that automatically extracts and installs the Oracle Database software.
- B. It can only install and configure Oracle Database software. The database has to be created separately.
- C. It can be used to install and upgrade Oracle Database for single-instance and cluster configurations.
- D. It can be used for both Oracle Database and Oracle Grid Infrastructure installation.
- E. It does not require the setup wizard.
Answer: C,D
NEW QUESTION 102
The USERS tablespace consists of data files 3 and 4 and must always be online in read/write mode.
Which two are true about using RMAN to perform an open database back up of this tablespace? (Choose two.)
- A. Only consistent backups can be created.
- B. Backups can be taken only if the database is in ARCHIVELOG mode.
- C. Backups must be done incrementally.
- D. Backups can be done incrementally.
- E. Backups must be contained in backup sets.
- F. The database must be registered in an RMAN catalog.
Answer: B,D
NEW QUESTION 103
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 version query requires that the RECYCLEBIN parameter be set to ON.
- C. FLASHBACK transaction query requires undo to retrieve all versions of a row that existed between two points in time.
- D. FLASHBACK DATA ARCHIVE requires undo to store all versions of all rows of a table being tracked.
- E. FLASHBACK drop requires undo to retrieve all versions of a row that existed between two points in time.
- F. FLASHBACK drop requires that the RECYCLEBIN parameter be set to ON.
Answer: A,C,F
NEW QUESTION 104
Which two are true about RMAN Multisection backups when a very large data file is divided into four sections?
(Choose two.)
- A. The four sections can be created in parallel.
- B. Each of the file sections must be processed serially.
- C. The four sections must be contained in backup sets.
- D. The four sections must be image copies.
- E. The four sections can be created serially.
Answer: A,C
NEW QUESTION 105
Your SALES_ROOTapplication container has two application PDBs.
The SALES_APPapplication has a common table, FIN.REVENUE, in the two PDBs.
Examine this query and its output:
Which two are true? (Choose two.)
- A. The MAPTABLEtables defines a logical partition key on a commonly used column for the REVENUEtable.
- B. The CONTAINERSclause cannot be used in queries on the REVENUEtable.
- C. A container map exists for the REVENUEtable, but is not enabled.
- D. The MAPTABLE table is a metadata-linked table.
- E. The REVENUEtable must be a list-partitioned table.
- F. The REVENUEtable partitions are not pruned across the PDBs automatically.
Answer: A,C
NEW QUESTION 106
A container database called CDB1is OMF-enabled.
PDB_FILE_NAME_CONVERTis not configured in CDB1.
PDB1was unplugged from CDB1earlier in the week.
Examine this command, which will be executed in CDB1:
CREATE PLUGGABLE DATABASE pdb1
USING '/u01/app/oracle/oradata/pdb1.xml'
SOURCE_FILE_NAME_CONVERT
('/u01/app/oracle/oradata/', '/u02/app/oracle/oradata/');
Which two are true? (Choose two.)
- A. PDB1 must be dropped from CDB1.
- B. PDB_FILE_NAME_CONVERTmust be set before executing the command.
- C. PDB1 data files already exist in the correct location.
- D. /u01/app/oracle/oradata/pdb1.xmldoes not contain the current locations of data files for PDB1.
- E. DBMS_PDB.CHECK_PLUG_COMPATIBILITYmust be run in CDB1before executing the command.
Answer: B,D
Explanation:
Explanation/Reference: http://anjaniappsdba.blogspot.com/2016/09/oracle-database-12102c-hot-cloning-of.html
NEW QUESTION 107
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?
- A. Data file 24 cannot be recovered while the CDB is opened.
- B. Data file 24 can be recovered while CDB$ROOTand PDB$SEED are opened.
- C. Data file 24 must be recovered while PDB2 is closed.
- D. Data file 24 can be recovered while PDB2 is opened.
- E. Data file 24 must be recovered while the CDB is opened.
Answer: D,E
NEW QUESTION 108
......
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