[Sep 19, 2023] 1Z0-083 Ultimate Study Guide - VCEEngine
Ultimate Guide to Prepare 1Z0-083 Certification Exam for Oracle Database 19c in 2023
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:
- Performing Recovery - Oracle Database: Backup and Recovery Workshop
- Install Grid Infrastructure and Oracle Database - Oracle Database: Deploy, Patch and Upgrade Workshop
- Diagnose RMAN performance issues
- Interpret the RMAN message output
- Patch Grid Infrastructure and Oracle Database
- Transporting Data - Oracle Database: Backup and Recovery Workshop
- Upgrade Oracle Grid Infrastructure
- RMAN Troubleshooting and Tuning - Oracle Database: Backup and Recovery Workshop
- Install Oracle Database software
Oracle 1Z0-083 exam consists of 84 multiple-choice questions and has a duration of 120 minutes. 1Z0-083 exam is computer-based and can be taken at any authorized Pearson VUE testing center worldwide. Candidates who pass the exam will receive an Oracle Certified Professional: Database Administration II certificate.
NEW QUESTION # 12
Which two are true about Oracle instance recovery? (Choose three.)
- A. Recovery reads redo until the end of the redo thread, and then opens the database. SMON then rolls back any dead transactions.
- B. Recovery begins from the start of any ACTIVE redo log group or the start of the CURRENT log group if no other group is ACTIV
- C. Recovery begins from the last checkpoint position that was calculated by the Database Writer before instance failure.
- D. Recovery reads redo until the end of the redo thread. SMON rolls back any dead transactions, and then the datanase is opened.
- E. Recovery begins from the beginning of the CURRENT redo log group.
- F. Recovery begins from the last checkpoint position that was recorded in the control file by the checkpoint process (CKPT).
Answer: A,C,D
NEW QUESTION # 13
You notice performance degradation in your production Oracle 12c database. You want to know what caused this performance difference. Which method or feature should you use?
- A. SQL Performance Analyzer
- B. Active Session History (ASH) report
- C. Database Replay
- D. Automatic Database Diagnostic Monitor (ADDM) Compare Period report
Answer: D
NEW QUESTION # 14
Choose three. Which three are true about recovering tables using RMAN?
- A. RMAN can recover a table after a DDL operation has altered the table structure.
- B. RMAN always uses an auxiliary instance.
- C. RMAN can recover tables owned by the SYSTEM user.
- D. RMAN can recover tables in the SYSTEM tablespace.
- E. RMAN can recover tables in the SYSAUX tablespace.
- F. RMAN can recover tables in a standby database.
- G. RMAN can recover tables owned by the SYS user.
Answer: A,B,C
NEW QUESTION # 15
Which three are true about backup, restore, and recovery operations done without using Recovery Manager (RMAN)? (Choose three.)
- A. 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.
- B. Oraclearchive log backups, copied using an O/S utility, can be added to the RMAN catalog as a backup set.
- C. Oracle data file backups, copied using an O/S utility, can be added to the RMAN catalog as IMAGE COPIES.
- D. 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.
- E. An Oracle database can be restored from backup files copied using O/S utilities.
- F. Backing up a database in NOARCHIVELOG mode using O/S utilities requires that the database instance bestarted and the dataabse be in the MOUNT state.
- G. Backing up a database in NOARCHIVELOG mode using O/S utilities requires that the database instance be shut down.
Answer: C,D,G
NEW QUESTION # 16
Which two are true about the Automatic Database Diasnostic Monitor (ADDM)? (Choose two.)
- A. Results are written to the alert log.
- B. It analyzes a period of time corresponding to the last day of activity.
- C. It runs automatically after each AWR snapshot.
- D. A DBA can run it manually.
- E. It analyzes a period of time corresponding to the 12 hours of activity.
Answer: C,D
NEW QUESTION # 17
Choose two. Which two statements are true when row-archival management is enabled?
- A. The ORA_ARCHIVE_STATE column may only be queried by users with the DBA role set.
- B. The ORA_ARCHIVE_STATE column may only be updated by users with the DBA role set.
- C. The ROW ARCHIVAL VISIBILITY session parameter defaults to active rows.
- D. The ORA_ARCHIVE_STATE column is updated in an overnight maintenance job based on activity tracking.
- E. The ORA_ARCHIVE_STATE column is only displayed if it is referenced in the column select list of a query
Answer: C,E
NEW QUESTION # 18
Which two are true about Oracle instance recovery? (Choose three.)
- A. Recovery reads redo until the end of the redo thread. SMON rollsback any dead transactions, and then the datanase is opened.
- B. Recovery reads redo until the end of the redo thread, and then opens the database. SMON then rolls back any dead transactions.
- C. Recovery begins from the beginning of the CURRENT redo log group.
- D. Recovery begins from the last checkpoint position that wascalculated by the Database Writer before instance failure.
- E. 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.
- F. Recovery begins from the last checkpoint position that was recorded in the control file by the checkpoint process (CKPT).
Answer: A,B,D
NEW QUESTION # 19
HR_ROOT is an application container with the HR_APP application installed. No application PDBs and no application seed have yet been created in HR_ROOT. An application PDB, PDB1,must be created so that the HR_APP application's common objects are accessible to it. Which two methods can be used?
- A. Create the PDB1 application PDB and synchronize it with poB$SEED.
- B. Create an application seed, and install HR_APP in it.
- C. Create the PDB1 application PDB and synchronize it with HR_ROOT.
- D. Create the PDB1 application PDB and install HR_APP in it.
- E. Create an application seed, synchronize it with HR_ROOT, and then create the PDB1.application PDB.
Answer: C,E
NEW QUESTION # 20
Which three resources are always shared among CDB$ROOT and pluggable databases (PDBs)? (Choose three.)
- A. the log writer process (LGWR)
- B. SYSAUX tablespaces
- C. temporary tablespaces
- D. the data dictionary in CDB$ROOT
- E. undo tablespaces
- F. the Process Monitor Process (PMON)
Answer: C,D,F
NEW QUESTION # 21
Which two are true about server-generated alerts? (Choose two.)
- A. Stateful alerts must be created by a DBA after resolving the problem.
- B. Stateless alerts are automatically cleared.
- C. Stateful alerts are purged automatically from the alert history.
- D. Stateless alerts can be purged manually from the alert history.
- E. Stateless alerts can be cleared manually.
Answer: D,E
Explanation:
Explanation
Except for the tablespace space usage metric, which is database related, the other metrics are instance related.
Threshold alerts are also referred to as stateful alerts which are automatically cleared when an alert condition clears. Stateful alert appears in DBA_OUTSTANDING_ALERTS and when cleared go to DBA_ALERT_HISTORY. Other server-generated alerts correspond to specific database events such as ORA-* errors, "Snapshot too old" errors, Recovery Area Low on Free Space, Resumable Session Suspended.
These are non threshold based alerts, also referred to as stateless alerts. Stateless alerts go directly to the History table. +++ Most alerts (such as "Out of Space") are cleared automatically when the cause of the problem disappears. However, other alerts (such as generic alert log errors) are sent to you for notification and must be acknowledged by you. After taking the corrective measures, you acknowledge an alert by clearing or purging it. Clearing an alert sends the alert to the Alert History which is accessible from Monitoring sub menu.
Purging an alert removes it from the Alert History.
NEW QUESTION # 22
Which three are true about Automatic Workload Repository (AWR), Automatic Database Diagnostic Monitor (ADDM), and the Manageability Monitor (MMON) background process? (Choose three.)
- A. By default, AWR snapshots are automatically purged after eight days.
- B. ADDM performs its analysis only when a DBA requests it.
- C. ADDM can recommend extending the buffer cache.
- D. By default, MMON creates an AWR snapshot every 30 minutes.
- E. AWR snapshots must be deleted when no longer required by ADDM.
- F. ADDM can recommend shrinking the buffer cache.
Answer: A,E,F
NEW QUESTION # 23
Which two are true about automatic block repair?
- A. Real-Time Query must be enabled on a physical standby database for automatic block repair to be done on that physical standby database.
- B. Real-Time Query must be enabled on a physical standby database for automatic block repair to be done on its primary database.
- C. Automatic block repair can repair blocks with no standby database if db_block_checking = TRUE.
- D. Real-Time Query must be enabled on a primary database for automatic block repair to be done on any of its physical standby databases.
- E. It is not possible for media corrupt blocks.
Answer: B,E
NEW QUESTION # 24
You plan to install Oracle Grid Infrastructure for a Standalone Server and Oracle Database for the first time on a server.
Examine this command and its outcome:
Which two are true? (Choose two.)
- A. The user account, oracle, and group, oinstall, can be used for all Oracle software installations.
- B. oracle can own an Oracle Database installation but not an Oracle Grid Infrastructure installation.
- C. oracle will be an owner of the Oracle Inventory.
- D. oracle will be granted the SYSASM privilege when installing the Oracle Database software.
- E. oracle must be the owner of every Oracle Database installation.
Answer: A,C
NEW QUESTION # 25
Which two are true about flashback features in Oracle Database 19c and later releases?
- A. Flashback logs are automatically purged whenever the value Of DB_FLASHBACK_RETENTION_TARGET is changed.
- B. Flashback logs are monitored for being older than the retention period defined in db_flashback_retention_target and can be deleted by an administrator written event trigger.
- C. Flashback logs are automatically purged when db_flashback_retention_target is set lower than the time they have already been retained.
- D. Flashback logs are monitored and proactively deleted when beyond the retention period definedin db_flashback_retention_target before there is space pressure.
- E. Flashback logs are monitored and proactively deleted when beyond the retention period definedin DB_flashback_retention_TARGET only after there is space pressure
Answer: B,D
NEW QUESTION # 26
Which two are true about Oracle Database Configuration Assistant (DBCA) templates? (Choose two.)
- A. The Data Warehouse template is most suitable when transaction response time is the key criterion.
- B. New templates can only be created by modifying an existing user-created template.
- C. The General Purpose of Transaction Processing templates are most suitable when concurrency and recoverability are key criteria.
- D. Oracle DBCA templates can be used to create new databases and duplicate existing databases.
- E. Oracle DBCA templates can store only logical structure and not database files.
Answer: C,D
NEW QUESTION # 27
Choose three. Which are the three steps in the SQL tuning process for Oracle Database environments?
- A. Tune SQL statements as a group using the SQL Tuning and SQL Access Advisors.
- B. Identify poorly tuned SQL statements using the SQL Tuning Advisor.
- C. Identify poorly tuned SQL statements using Automatic Database Diagnostic Monitor.
- D. Test tuned SQL statements one at a time for all statements in the application.
- E. Test the application as a whole using tuned SQL statements.
- F. Tune individual SQL statements using the SQL Tuning Advisor.
Answer: C,E,F
NEW QUESTION # 28
Choose two. Your SALES_ROOT application container has two application PDBs. The SALES_APP application has a common table, FIN.REVENUE, in the two PDBs. Examine this query and its output: SELECT containers_default, container_map, table_name FROM dba_tables WHERE owner='FIN' ; CONTAINERS_DEFAULT CONTAINER_MAP CONTAINER_MAP_OBJECT TABLE_NAME -------------------------------------------------------------------------------------------------------------------------------NO YES NO REVENUE NO NO YES MAPTABLE Which two are true?
- A. The REVENUE table must be a list-partitioned table.
- B. The REVENUE table partitions are not pruned across the PDBs automatically.
- C. The MAPTABLE table defines a logical partition key on a commonly used column for the REVENUE table.
- D. The CONTAINERS clause cannot be used in queries on the REVENUE table.
- E. The REVENUE table must be a composite-partitioned table.
Answer: B,E
NEW QUESTION # 29
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