1Z1-083 Training & Certification Get Latest Oracle Database 19c Updated on Jul 09, 2021
Certification Training for 1Z1-083 Exam Dumps Test Engine
NEW QUESTION 61
Which two are facets of performance planning that should always be considered or implemented for an Oracle Database environment? (Choose two.)
- A. defining primary keys for all tables to speed up all queries
- B. the configuration of storage arrays
- C. using check constraints to speed up updates
- D. defining foreign keys for all tables to speed up joins
- E. the physical data model
Answer: B,E
NEW QUESTION 62
Examine this output:
Which two are true?
- A. PDB3 is guaranteed to receive at least 20% of the available system resources if there is enough demand.
- B. PDB3 can use all available parallel execution processes at times.
- 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. Any PDB not specified in the plan will be unable to execute statements in parallel.
- F. Any PDB not specified in the plan will be able to use a maximum of 16.5% of the available system resources.
Answer: C,E
NEW QUESTION 63
While backing up to an SBT channel, you determine that the read phase of your compressed Recovery Manager (RMAN) incremental level 0 backup is a bottleneck.
FORCE LOGGING is enabled for the database.
Which two could improve read performance?
- A. Increase the size of the database buffer cache.
- B. Enable asynchronous disk I/O.
- C. Increase the size of tape I/O buffers.
- D. Disable FORCE LOGGING for the database.
- E. Increase the level of RMAN multiplexing.
Answer: D,E
NEW QUESTION 64
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 an undo tablespace that is in use
- B. after losing all members of an inactive online redo log group
- C. after losing all members of the current online redo log group
- D. after losing all copies of the control file
- E. after losing a sysaux tablespace data file
Answer: B,C
NEW QUESTION 65
Which two are true about Oracle Database Configuration Assistant (DBCA) templates?
- A. Oracle DBCA templates can be used to create new databases and duplicate existing databases.
- B. The Data Warehouse template is most suitable when transaction response time is the key criterion.
- C. Oracle DBCA templates can store only logical structure and not database files.
- D. New templates can only be created by modifying an existing user-created template.
- E. The General Purpose or Transaction Processing templates are most suitable when concurrency and recoverability are key criteria.
Answer: A,C
NEW QUESTION 66
For which two requirements can you use the USER_TABLESPACE clause with the CREATE PLUGGABLE DATABASE command? (Choose two.)
- A. to specify the list of user tablespaces to include when moving a non-CDB to a PDB
- B. to include specific user tablespaces only when relocating a PDB
- C. to exclude a temp tablespace when plugging in a PDB
- D. to exclude all tablespaces except SYSTEM, SYSAUX, and TEMP when plugging in a PDB
- E. to specify the list of tablespaces to include when creating a PDB from the CDB seed
- F. to specify a default tablespace in a PDB cloned from another PDB in the same CDB.
Answer: C,E
NEW QUESTION 67
Examine this configuration:
* CDB1 is a container database.
* PDB1 and PDB2 are pluggable databases in CDB1.
* PDB1 and PDB2 are OPEN in READ WRITE mode.
You execute these commands successfully:
Which two are true? (Choose two.)
- A. Uncommitted transactions in PDB1 have been rolled back.
- B. Uncommitted transactions in CDB1 and PDB1 have been rolled back.
- C. CDB1 is in MOUNT state
- D. CDB1 is shut down.
- E. PDB1 is closed.
Answer: C,E
NEW QUESTION 68
Which three are true about Optimizer Statistics Advisor? (Choose three.)
- A. It can recommend changes to improve the statistics gathering process.
- B. It runs automatically every night by default.
- C. It is part of the DBMS_STATS package.
- D. It is part of the DBMS_ADVISOR package.
- E. It always analyzes all schemas in the database.
- F. It can be run only manually.
Answer: A,C,F
Explanation:
Explanation
https://mikedietrichde.com/2017/08/22/oracle-optimizer-statistics-advisor-in-oracle-database-12-2-0-1/
https://www.oracle.com/technetwork/database/bi-datawarehousing/twp-bp-for-stats-gather-19c-5324205.pdf
NEW QUESTION 69
Which two are true about Recovery Manager (RMAN) diagnostic message output? (Choose two.)
- A. Media Management messages for SBT devices are written to an Oracle trace file.
- B. The RMAN LOG command line clause causes output issued during RMAN command compilation to be written to a log file only.
- C. The RMAN LOG command line clause causes output issued during RMAN command compilation to be written to a log file and to standard output.
- D. RMAN error stacks should be read from the top down as that is the order in which errors are generated.
- E. RMAN error stacks should be read from the bottom up as that is the order in which errors are generated.
- F. Media Management messages for SBT devices are always written to sbtio.log.
Answer: A,B
NEW QUESTION 70
You issued this command:
RMAN> BACKUP RECOVERY AREA FORCE;
Which three are true? (Choose three.)
- A. All files in any previous FRA that have been backed up already, are backed up.
- B. All Oracle recovery files normally written to the FRA and which have been backed up already to in any previous FRA, are backed up.
- C. All files in the current FRA that have been backed up already, are backed up.
- D. All files in any previous FRA that have not yet been backed up, are backed up.
- E. All files in the current fast recovery area (FRA) that have not yet been backed up, are backed up.
- F. All Oracle recovery files normally written to the FRA and which have been backed up already to the current FRA, are backed up.
- G. All Oracle recovery files normally written to the FRA and which have not yet been backed up, are backed up.
Answer: A,E,G
NEW QUESTION 71
Which three are true about Automatic Workload Repository (AWR)? (Choose three.)
- A. By default, AWR snapshots are retained for 7 days.
- B. The taking of AWR snapshots can be disabled.
- C. By default, AWR snapshots are taken every 60 minutes.
- D. AWR data is stored in the SYSTEM tablespace.
- E. Its collection level is determined by the value of the STATISTICS_LEVEL database parameter.
Answer: B,C,E
NEW QUESTION 72
Which two are true about OS groups and users for Oracle Grid Infrastructure and the Oracle Relational Database Management System (RDBMS)? (Choose two.)
- A. By default, members of the OSASM group can access Automatic Storage Management and RDBMS instances.
- B. The Oracle Grid Infrastructure owner owns Oracle Restart and Oracle Automatic Storage Management binaries.
- C. The Oracle Grid Infrastructure installation must be owned by the grid user.
- D. The Oracle Grid Infrastructure owner must have OSOPER, OSBACKUPDBA, and OSKMDBA as secondary groups.
- E. The primary group for the Oracle Grid Infrastructure and Oracle Database owners must be the Oracle Inventory group.
- F. The same OSDBA group must be used for Automatic Storage Management and the Oracle Database.
Answer: D,F
NEW QUESTION 73
Which two are true about Oracle Optimizer Statistics, their use, and their collection? (Choose two.)
- A. The Statistics Advisor can help recommend the best way to gather statistics.
- B. The Statistics Advisor generates actions for all recommendations.
- C. Index balanced B*Tree height is considered when evaluating the cost of using an index.
- D. Statistics collected using DBMS_STATS always yield the best optimizer result.
- E. The number of table rows is considered when evaluating the cost of accessing a table using an index.
Answer: A,D
NEW QUESTION 74
Which three are true about RMAN persistent configuration settings, administration, and their effects? (Choose three.)
- A. Backup older than the recovery window retention policy are always deleted automatically if the backup location has insufficient space.
- B. The V$RMAN_CONFIGURATION view displays only settings with values that have been modified.
- C. The RMAN SHOW ALL command displays only settings with nondefault values.
- D. Backups written to the fast recovery area (FRA) that are oboslete based on the redundancy retention policy can be deleted automatically to free space.
- E. A DBA must specify either a redundancy retention policy or a recovery window retention policy.
- F. A target database's persistent RMAN configuration settings are always stored in the target's control file
- G. A target database's persistent RMAN configuration settings are always synchronized automatically with the RMAN catalog.
Answer: B,D,F
NEW QUESTION 75
A container database called CDB1 is OMF-enabled.
PDB_FILE_NAME_CONVERT is not configured in CDB1. PDB1 was unplugged from CDB1 earlier 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. DBMS_PDB.CHECK_PLUG_COMPATIBILITY must be run in CDB1 before executing the command.
- B. PDB1 data files already exist in the correct location.
- C. PDB1 must be dropped from CDB1.
- D. PDB_FILE_NAME_CONVERT must be set before executing the command.
- E. /u01/app/oracle/oradata/pdb1.xml does not contain the current locations of data files for PDB1.
Answer: D,E
NEW QUESTION 76
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 restore point is a label for the system change number (SCN) that will be saved two years after the archival backup was taken.
- B. The data file backups in the self-contained archive backup are not considered obsolete for two years regardless of the retention policy.
- C. All archive logs created after this backup are kept for two years.
- D. The restore point is a label for the system change number (SCN) before the archival backup was taken.
- E. The control file is included in the self-contained archival backup.
- F. The SPFILE is included in the self-contaied archival backup.
Answer: C,E,F
NEW QUESTION 77
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Oracle Database 19c 1Z1-083 Real Exam Questions and Answers FREE Updated: https://drive.google.com/open?id=1h80CfmVKeMign_DxftEEIKM_8a2egVRJ
