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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:
- Upgrading and Transporting CDBs and Regular PDBs
- Oracle Database: Managing Multitenant Architecture Ed 1
- Backup and Duplicate
- Manage Security in Multitenant databases
- Backup Strategies and Terminology
- Oracle Database: Backup and Recovery Workshop
- Manage Application PDBs
- Manage CDBs and PDBs
- Creating CDBs and Regular PDBs
- Configuring and Using RMAN
NEW QUESTION 77
Which three are true about opatchauto? (Choose three.)
- A. Patches are applied via opatchauto.
- B. It applies patches in nonrolling mode by default.
- C. Users must always input patch plans to opatchauto.
- D. It requires the Oracle Grid Infrastructure and Oracle Database instances to be shut down before being invoked.
- E. It is used to apply interim patches to Oracle Grid Infrastructure and Oracle Database home combinations.
- F. It performs a shutdown and then a restart of all processes in both Oracle Grid Infrastructure and Oracle Database home during the patching process.
- G. It must be invoked by a user with root user privileges.
Answer: A,D,G
NEW QUESTION 78
Which three actions are performed by Database Upgrade Assistant (DBUA)? (Choose three.)
- 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 performs prerequisite checks to verify if the Oracle database is ready for upgrade.
- E. It empties the RECYCLE BIN.
- F. It removes the AUDSYS schema and the AUDIT_ADMIN and AUDIT_VIEWER roles
Answer: A,C,D
Explanation:
Reference:
https://oracle-base.com/articles/12c/upgrading-to-12c
NEW QUESTION 79
Which two statements are true about recovering logically corrupted tables or table partitions from an RMAN backup?
- A. Tables or table partitions can be recovered only when the database is in mount state.
- B. Tables or table partitions from the system and sysaux tablespaces cannot be recovered.
- C. Tables or table partitions with a foreign key cannot be recovered.
- D. Tables or table partitions can be recovered by using an auxiliary instance only.
- E. Tables with not null constraints cannot be recovered.
Answer: B,D
NEW QUESTION 80
Choose three. In which three situations can you use threshold server-generated alerts to help diagnose and fix problems?
- A. when free space in a locally managed tablespace falls below a specified percentage
- B. when the total number of logons exceeds a specific value
- C. when the total number of locked user account exceeds a specific value
- D. when a resumable statement is suspended
- E. when free space in a dictionary managed tablespace falls below a specified percentage
- F. when the number of logons per second exceeds a specific value
Answer: A,C,F
NEW QUESTION 81
You have configured RMAN SBT channels to write backups to medi
a. 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 SPFILE is included in the self-contaied archival backup.
- C. The restore point is a label for the system change number (SCN) before the archival backup was taken.
- D. The data file backups in the self-contained archive backup are not considered obsolete for two years regardless of the retention policy.
- E. The control file is included in the self-contained archival backup.
- F. All archive logs created after this backup are kept for two years.
Answer: B,D,E
NEW QUESTION 82
Choose three. Which three are true about backing up the control file?
- A. It can be backed up manually as a trace file containing SQL statements for control file recreation.
- 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 gets backed up automatically by RMAN when the BACKUP SPFILE command is used.
- D. It can be backed up manually as a binary copy.
- E. It cannot be backed up manually as a binary copy.
- F. It can get backed up automatically as a binary copy.
Answer: A,D,F
NEW QUESTION 83
choose four Which four are true about performance-related Oracle tools?
- A. The Automatic Database Diagnostic Monitor (ADDM) Compare Period report can compare two non-consecutive periods.
- B. Database Replay always uses one replay client for each original database session.
- C. The Active Session History (ASH) report is based on wait event samples.
- D. The Automatic Database Diagnostic Monitor (ADDM) Compare Period report can compare two consecutive periods.
- E. SQL Performance Analyzer can identify regressed SQL statements.
- F. SQL Performance Analyzer can suggest schema changes.
- G. Database Replay always uses one replay client for all the original database sessions.
Answer: A,D,E,F
NEW QUESTION 84
Which three are true? (Choose three.)
- A. Application-common Oracle Label Security (OLS) policies cannot be created in an application root outside an install/patch BEGIN-END block.
- B. Application-common Transparent Security Data Protection (TSDP) policies can be created only within an application install/patch BEGIN-END block.
- C. Application-common TSDP policies are always container specific.
- D. Application-common OLS policies can be created in an application root inside an install/patch BEGIN-END block.
- E. Virtual Private Database (VPD) policies on objects in an application root are automatically synchronized with all application PDBs contained in the application container.
- F. Unified auditing can be automatically synchronized to all application PDBs in an application container.
- G. Fine-grained auditing (FGA) policies in an application root are automatically synchronized to all application PDBs contained in the application container.
Answer: B,E,F
NEW QUESTION 85
Your container database, CDB1 has an application container, HR_ROOT, with an application PDB, HR_PDB1.
You have the required privilege to clone HR_PDB1 to container database CDB2, which does not contain HR_ROOT Which two are always true?
- A. The HR_PDB1 clone created in CDB2 will be in mount state when cloning ends.
- B. All transactions in HR_PDB1 of CDB1 must commit before the cloning process starts.
- C. CDB1 and CDB2 must be In shared undo mode.
- D. A common user must exist in CDB2 with the create pluggable database privilege.
- E. Cloning HR_ROOT automatically clones HR_PDB1.
Answer: D,E
NEW QUESTION 86
Which three are true about the Oracle Optimizer? (Choose three.)
- A. It obeys all hints.
- B. It can only use SQL Plan Directives tied to the SQL statement for which a plan is being generated.
- C. It can re-optimize execution plans after previous executions detect suboptimal plans.
- D. It considers object statistics when generating execution plans for SQL statements.
- E. It updates stale object statistics in the Data Dictionary.
- F. It considers the filters in WHERE clauses when generating execution plans for SQL statements.
Answer: B,D,E
NEW QUESTION 87
Which three are true about actions that can or cannot be performed by users with the SYSBACKUP privilege?
(Choose three.)
- A. They can drop any tablespace.
- B. They can view data from any user-defined tables.
- C. They cannot create restore points.
- D. They can view data from any data dictionary view or dynamic performance view.
- E. They cannot drop tablespaces.
- F. They can create any table.
Answer: E,F
NEW QUESTION 88
Which three are true about the SQL Tuning Advisor? (Choose three.)
- A. It can recommend semantic changes to SQL statements.
- B. It only recommends syntactic changes to SQL statements.
- C. It checks each query being analyzed for missing statistics.
- D. It builds SQL profiles for each poorly performing SQL statement to prevent regressions.
- E. It considers all SQL statements being analyzed by the advisor task as a group.
- F. It checks each query being analyzed for stale statistics.
Answer: A,C,F
NEW QUESTION 89
Choose two. Which two are true about RMAN backups when using a media manager?
- A. A media manager always writes RMAN requested backups to tape.
- B. By default, a request for a proxy copy may result in a backup set being created.
- C. The media manager layer (MML) routines provided by Oracle support any vendors' media management products.
- D. A media manager is required to create RMAN proxy copies.
- E. A media manager is required to create RMAN image copies.
Answer: A,B
NEW QUESTION 90
Examine this configuration:
1. CDB1is an Oracle Database 12c Release 2 database containing pluggable databases PDB$SEED, PDB1, and PDB2.
2. PDB$SEEDis open READ ONLY
3. PDB1is open READ WRITE
4. PDB2 is MOUNTED.
5. ORACLE_HOMEis /u01/app/oracle/product/18.1.0/dbhome_1.
You execute these commands before upgrading the database to the current release:
For which databases will fixup scripts be created?
- A. CDB1, PDB$SEED, and PDB1 only
- B. CDB1, PDB1, and PDB2only
- C. CDB1and PDB$SEEDonly
- D. PDB$SEED, PDB1, and PDB2only
- E. CDB1, PDB$SEED, PDB1, and PDB2
Answer: A
NEW QUESTION 91
choose two Examine these RMAN commands: RMAN> CONNECT TARGET "sbu@prod AS SYSBACKUP"; RMAN> CONNECT AUXILIARY "sbu@dup_db AS SYSBACKUP"; RMAN> DUPLICATE TARGET DATABASE TO dup_db FROM ACTIVE DATABASE PASSWORD FILE SECTION SIZE 400M; Which two statements are true about the DUPLICATE command?
- A. Itsucceeds only if the target database is greater than 400M.
- B. It fails because no parallel channels are allocated for the auxiliary database.
- C. No catalogued backup of the TARGET is used to duplicate the database.
- D. It fails because connection to the AUXILIARY instance must be as SYSDBA.
- E. It succeeds.
Answer: C,E
NEW QUESTION 92
Choose two. You plan to perform cross-platform PDB transport using XTTS. Which two are true?
- A. The source and target platforms must have the same endianess.
- B. The source PDB must not be an application root.
- C. The source PDB can be in MOUNT or OPEN state.
- D. Automatic conversion of endianess occurs.
- E. A backup of the PDB must exist, taken using the BACKUP command with the To PLATFORM clause.
- F. The source PDB must be in MOUNT state.
Answer: A,C
NEW QUESTION 93
Which two are true about Oracle instance recovery? (Choose three.)
- A. Recovery begins from the last checkpoint position that was recorded in the control file by the checkpoint process (CKPT).
- B. Recovery begins from the last checkpoint position that was calculated by the Database Writer before instance failure.
- C. Recovery begins from the start of any ACTIVE redo log group or the start of the CURRENT log group if no other group is ACTIVE.
- D. Recovery begins from the beginning of the CURRENT redo log group.
- E. Recovery reads redo until the end of the redo thread, and then opens the database. SMON then rolls back any dead transactions.
- F. Recovery reads redo until the end of the redo thread. SMON rolls back any dead transactions, and then the datanase is opened.
Answer: B,E,F
NEW QUESTION 94
How do you configure a CDB for local undo mode?
- A. Open the CDB instance in restricted mode. In cdb$root, drop the undo tablespace. Execute alter database local undo on in each PDB, and then restart the CDB instance.
- B. Open the CDB instance in upgrade mode. In each PDB, execute alter database local undo on, create an undo tablespace, and then restart the CDB instance.
- C. Open the CDB in read-only mode. In cdb$root, execute alter database local undo on, and then change the CDB to read/write mode.
- D. Open the CDB instance in restricted mode. In cdb$root, execute alter database local undo on. create an undo tablespace in each PDB, and then restart the CDB instance
- E. Open the CDB instance in upgrade mode. In cdb$root, execute alter database local undo on, and then restart the CDB instance.
Answer: A
NEW QUESTION 95
Which two are true about the character sets used in an Oracle database? (Choose two.)
- A. Single-byte character sets always use 7-bit encoding schemes.
- B. Single-byte character sets always use 8-bit encoding schemes.
- C. Multibyte character sets allow more efficient space utilization than single byte character sets.
- D. Single-byte character sets provide better performance than multibyte character sets.
- E. Unicode is the only supported character set for Oracle databases created using Database Configuration Assistant (DBCA).
- F. Unicode enables information from any language to be stored using a single character set.
Answer: D,F
Explanation:
Reference:
https://docs.oracle.com/database/121/NLSPG/ch2charset.htm#NLSPG166
NEW QUESTION 96
Which two are true about RMAN backups when using a media manager? (Choose two.)
- A. A media manager always writes RMAN requested backups to tape.
- B. A media manager is required to create RMAN image copies.
- C. The media manager layer (MML) routines provided by Oracle support any vendors' media management products.
- D. A media manager is required to create RMAN proxy copies.
- E. By default, a request for a proxy copy may result in a backup set being created.
Answer: A,B
NEW QUESTION 97
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