About Prep4sures Oracle 1Z0-025 Exam
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Oracle 1Z0-025 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Backup Concepts and Strategies | - Backup strategies and scheduling considerations - Backup types (cold, hot, full, incremental) |
| Topic 2: Database Recovery Techniques | - Recovery from user errors - Complete and incomplete recovery - Media recovery and instance recovery |
| Topic 3: Recovery Manager (RMAN) | - Recovery catalog usage - RMAN backup commands and scripts - RMAN architecture and configuration |
| Topic 4: Flashback Technology (Oracle 10g) | - Flashback Query - Flashback Table |
| Topic 5: Archived Redo Log Management | - ARCHIVELOG mode configuration - Archived log maintenance and recovery usage |
Oracle Backup and Recovery Sample Questions:
During an opened database backup, a power failure occurs. Which SQL statement do you issue to resolve this situation after mounting the database?
- A. ALTER DATABASE DATAFILE n END BACKUP
- B. ALTER TABLESPACE name DATAFILE n END BACKUP
- C. ALTER DATABASE n END BACKUP
- D. ALTER DATABASE OPEN RESETLOGS
Correct Answer: A 🗳️
Explanation: Only visible for Prep4sures members. You can sign-up / login (it's free).
Why can you not apply archive logs to not forward after an import?
- A. Because after an import, the database performs a RESETLOGS.
- B. There is no need to apply the archive logs because the database will apply them automatically.
- C. Because the control file is recreated during the import.
- D. Because no synchronizing information is stored in the archived logs or export file.
Correct Answer: D 🗳️
Explanation: Only visible for Prep4sures members. You can sign-up / login (it's free).
Consider the following scenario using incremental backups. A level 1 backup is taken on the first of the month. A level 2 backup is taken in every Sunday, and a level 3 backup is taken daily. If the database gets corrupted on the second Wednesday of the month and is lost, which scenario would restore the database completely?
- A. A base level backup (level 0) is missing and nothing can be recovered.
- B. The monthly backup (level 1) and the daily backup (level 3).
- C. The monthly backup (level 1), the weekly backup (level 2) and the daily backup (level5)
- D. The weekly backup (level 2) and the daily backup (level 3).
Correct Answer: A 🗳️
Explanation: Only visible for Prep4sures members. You can sign-up / login (it's free).
Which statement about an open database backup is NOT true?
- A. An operating system backup of the database files is required.
- B. All the database files copied are consistent to a point-in-time.
- C. The database must be available in ARCHIVELOG mode.
- D. The database is available for use during backups.
Correct Answer: A 🗳️
Explanation: Only visible for Prep4sures members. You can sign-up / login (it's free).
What is the effect of issuing an ALTER DATABASE OPEN RESETLOGS command on the primary database?
- A. Once the archived log files are applied to the standby database, the redo log of the standby database is reset.
- B. The standby database can only be used in read-only mode.
- C. A new standby database incarnation will automatically be started.
- D. It invalidates the standby database.
Correct Answer: D 🗳️
Explanation: Only visible for Prep4sures members. You can sign-up / login (it's free).
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