1Z0-083 Free Certification Exam Easy to Download PDF Format 2024
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Oracle 1Z1-083 is an exam designed for professionals who wish to demonstrate their knowledge and expertise in database administration. 1Z0-083 exam is a part of the Oracle Certified Database Administrator (OCDA) certification program and is considered an important step towards becoming an Oracle Certified Master. 1Z0-083 exam aims to test the candidate's ability to manage and administer an Oracle database, including installation, configuration, backup and recovery, and performance tuning.
NEW QUESTION # 149
You want to transport the UNIVERSITY tablespace from one database to another.
The UNIVERSITY tablespace is currently open read/write.
The source and destination platforms have the same endian format.
Examine this list of steps:
1. Make the UNIVERSITY tablespace read-only on the source system.
2. Export the UNIVERSITY tablespace metadata using EXPDP.
3. Create a cross-platform backup set from the UNIVERSITY tablespace on the source system, using an RMAN command that includes the DATAPUMP clause.
4. Copy the cross-platform backup sets to the destination system.
5. Copy the Data Pump dump set from the source to the destination system.
6. Restore the cross-platform backup set on the destination system using an RMAN command that includes the DATAPUMP clause.
7. Import the UNIVERSITY tablespace metadata using IMPDP.
8. Make the UNIVERSITY tablespace read/write on the destination system.
Which are the minimum number of steps required, in the correct order, to transport the UNIVERSITY tablespace?
- A. 1, 3, 4, 6, 8
- B. 1, 2, 3, 4, 5, 6, 7, 8
- C. 2, 3, 4, 5, 6, 7
- D. 3, 4, 6
Answer: A
NEW QUESTION # 150
Examine this configuration:
* CDB1 is a container database.
* COMMON_USER_PREFIX is C##.
* PDB1 is a pluggable database contained in CDB1.
* APP1_ROOT is an application container contained in CDB1.
* APP1_PDB1 is an application PDB contained in APP1_ROOT.
You execute these commands successfully:
Which two are true? (Choose two.)
- A. C##_APP_USER1 can be created in CDB1.
- B. C##_USER1 will have the same privileges and roles granted in all PDBs in CDB1.
- C. APP1_USER1 can be created in CDB1.
- D. P1_USER1 can be created in CDB1.
- E. APP1_USER1 can be created in PDB1.
- F. APP1_USER1 can have different privileges in each Application PDB contained in APP1_ROOT.
Answer: B,F
NEW QUESTION # 151
Which two are true about RMAN backups when using a media manager? (Choose two.)
- A. A media manager is required to create RMAN image copies.
- B. The media manager layer (MML) routines provided by Oracle support any vendors' media management products.
- C. A media manager is required to create RMAN proxy copies.
- D. By default, a request for a proxy copy may result in a backup set being created.
- E. A media manager always writes RMAN requested backups to tape.
Answer: A,E
NEW QUESTION # 152
How do you configure a CDB for local undo mode?
- A. Open the CDB in read-only mode.
In cdb$root, ex cute alter database local undo on, and then change the CDB to read/write mode. - B. Open the CDB instance in restricted mode.
In cdb$root, execute alter database local undo on.
create an undo tablespace in each PDB, and hen restart the CDB instance - C. Open the CDB instance in restricted mode.
In cdb$root, drop the undo tablespace.
Execute alter database local undo on in each PDB and then restart the CDB instance. - D. Open the CDB instance in upgrade mode.
In cdb$root, execute alter database local undo on, and then restart the CDB instance. - E. Open the CDB instance in upgrade mode.
In each PDB, execute alter database local undo on, create an undo tablespace, and hen restart the CDB instance.
Answer: D
Explanation:
https://docs.oracle.com/en/database/oracle/oracle-database/12.2/admin/administering-a-cdb-with-sql-plus.html#GUID-1AAB032F-D13A-4E06-A062-59E0487C2FC5
NEW QUESTION # 153
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 $ $ORACLE_HOME/perl/bin/perl catctl.pl -C 'PDB2' What is the outcome?
- A. It fails because PDB$SEED is in MIGRATE state.
- B. Only CDB$ROOT, PDB$SEED, and PDB1 are upgraded.
- C. It fails because PDB2 is not in UPGRADE state.
- D. Only CDB$ROOT, PDB$SEED, and PDB2 are upgraded.
- E. Only CDB$ROOT and PDB$SEED are upgraded.
- F. CDB$ROOT, PDB$SEED, PDB1, and PDB2 are upgraded.
Answer: F
NEW QUESTION # 154
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? (Choose two.)
- A. 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
- B. when a new tablespace is added to a registered target database
- C. when the target is first registered
- 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,D
NEW QUESTION # 155
Choose three. Which three are true about backing up the control file?
- A. It can get backed up automatically as a binary copy.
- B. It gets backed up automatically by RMAN as a trace file containing SQL statements for control file re-creation when a database backup occurs.
- C. It can be backed up manually as a trace file containing SQL statements for control file recreation.
- D. It gets backed up automatically by RMAN when the BACKUP SPFILE command is used.
- E. It cannot be backed up manually as a binary copy.
- F. It can be backed up manually as a binary copy.
Answer: A,C,F
NEW QUESTION # 156
Choose two. Which two are true about various Oracle security and auditing capabilities?
- A. Application-common TSDP policies are always container specific.
- B. Application-common OLS policies can be created only if all the PDBs in the application container are closed.
- C. Unified auditing can be automatically synchronized to all application PDBs in an application container.
- D. Fine-grained auditing (FGA) policies in an application root are automatically synchronized to all application PDBs contained in the application container when they are updated.
- E. Application-common Transparent Security Data Protection (TSDP) policies can be created only if all the PDBs in the application container are closed.
Answer: C,D
NEW QUESTION # 157
Which two are true about changing the LOCAL_UNDO_ENABLEDproperty to false in a CDB? (Choose two.)
- A. After the change, only a common user with the required privilege can create an undo tablespace in CDB&ROOT.
- B. Any new PDB and existing PDBs are automatically configured to use the default undo tablespace in CDB$ROOT.
- C. After the change, each existing PDB has to be reopened for the new undo mode to take effect.
- D. After the change, any user with the required privilege can create an undo tablespace in the PDBs.
- E. Undo tablespaces existing in PDBs must be dropped before the change.
- F. After the change, only one undo tablespace can exist in CDB$ROOT.
Answer: A,D
Explanation:
Explanation/Reference: https://docs.oracle.com/en/database/oracle/oracle-database/18/multi/creating-and-configuring-a- cdb.html#GUID-12ADA04D-F81D-4579-A68C-0958CC7D6C2F
NEW QUESTION # 158
Which two are true about flashback features in Oracle Database 19c and later releases? (Choose two.)
- A. Flashback logs areautomatically purged when DB_FLASHBACK_RETENTION_TARGET is set lower than the time they have already been retained.
- B. Flashback logs are monitored for being older than the retentionperiod defined in DB_FLASHBACK_RETENTION_TARGET and can be deleted by an administrator written event trigger.
- C. Flashback logs are monitored and proactively deleted when beyond the retention period defined in DB_FLASHBACK_RETENTION_TARGET before there is space pressure.
- D. Flashback logs are monitored and proactively deleted when beyond the retention period defined in DB_FLASHBACK_RETENTION_TARGET only after there is space pressure.
- E. Flashback logs are automatically purged whenever the value of
DB_FLASHBACK_RETENTION_TARGET is changed.
Answer: D,E
NEW QUESTION # 159
Which three are true about the FLASHBACK DATABASE feature? (Choose three.)
- A. It requires that the target database be in ARCHIVELOG mode.
- B. FLASHBACK LOGS are archived after a log switch.
- C. FLASHBACK DATABASE only uses FLASHBACK LOGS to get the database to the desired flashback time.
- D. It always generates REDO and UNDO.
- E. Queries and DML have the same FLASHBACK LOG overhead when flashback is enabled for a database.
- F. A database can be flashed back using SQL*PLUS.
Answer: A,E,F
NEW QUESTION # 160
Automatic Shared Memory Management is disabled for one of your database instances.
Some SQL statements perform poorly due to excessive hard parse activity, thereby degrading performance. What would be your next step?
- A. Run the SQL Tunning Advisor.
- B. Run the SQL Access Advisor.
- C. Run the Memory Advisor for the Program Global Area.
- D. Run the Memory Advisor for the System Global Area.
- E. Run the Memory Advisor for the shared pool.
Answer: E
NEW QUESTION # 161
Which three actions are performed by Database Upgrade Assistant (DBUA)? (Choose three.)
- A. It empties the RECYCLE BIN.
- B. It sets all user tablespaces to "read-only" before starting the upgrade.
- C. It performs prerequisite checks to verify if the Oracle database is ready for upgrade.
- D. It increases tablespace size, if required, to meet upgrade requirements.
- E. It removes the AUDSYS schema and the AUDIT_ADMIN and AUDIT_VIEWER roles
- F. It recompiles all stored PL/SQL code by using utlrp.sql.
Answer: A,C,D
Explanation:
Reference:
https://docs.oracle.com/en/database/oracle/oracle-database/12.2/upgrd/upgrading-oracle-database-upgrade-assistant-dbua.html#GUID-307DACD9-ECEE-4079-B767-B22620B99900
https://docs.oracle.com/en/database/oracle/oracle-database/12.2/upgrd/upgrading-oracle-database-upgrade-assistant-dbua.html#GUID-8BDDF859-1638-45AC-824D-78FC8154847C
NEW QUESTION # 162
choose two You take your database backups by using the RMAN media management interface (MMI). Which two are true about the use of the RMAN MMI?
- A. You can
- B. You can
- C. You can
- D. You can
- E. You can
Answer: B,C
NEW QUESTION # 163
Which statement describes the significance of the CHANGE FAILURE command in RMAN?
(Choose all that apply.)
- A. It is used to change failure priority only for the CRITICAL priority.
- B. It is used to execute the advised repair script.
- C. It is used to explicitly close the open failures.
- D. It is used to inform the database about the repair after the repair script executes.
- E. It is used to change failure priority only for HIGH or LOW priorities.
Answer: C,E
NEW QUESTION # 164
Which two are true about Oracle Optimizer Statistics, their use, and their collection? (Choose two.)
- A. The number of table rows is considered when evaluating the cost of accessing a table using an index.
- B. Index balanced B*Tree height is considered when evaluating the cost of using an index.
- C. The Statistics Advisor can help recommend the best way to gather statistics.
- D. The Statistics Advisor generates actions for all recommendations.
- E. Statistics collected using DBMS_STATS always yield the best optimizer result.
Answer: C,E
NEW QUESTION # 165
Choose two. Which two are true about the Optimizer Statistics Advisor?
- A. It can be run only manually.
- B. It can recommend changes to improve the statistics gathering process.
- C. It always analyzes all schemas in the database.
- D. It runs automatically every night by default. E) It can be run only automatically.
Answer: B,D
NEW QUESTION # 166
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