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Which statement is correct regarding the online redo log? (choose the best answer)A. There must be at least one log file group, with at least one memberB. There must be at least one log file group, with at least two membersC. There must be at least two log file group, with at least one members each D. There must be at least two log file group, with at least two members each

Answer: Option C

Explanation:Two groups of one member is the minimum required for the database to function. A & B are wrong because at least two groups are always required. D is wrong because while it is certainly advisable to multiplex the members, it is not technical requirement.

Where is the current redo byte address, also known as the incremental checkpoint positions, recorded? (choose the best answer)A. In the control-file B. In the current online log file groupC. In the header of each data-file D. In the system global area

Answer: Option A

Explanation:The checkpoint process writes the RBA to the control-file. B,C, and D. The online logs, the data-files, and SGA have no knowledge of where the current RBA is.

How many maximum no of control files we can have within a database?A. 3 B. 5C. 2 D. 8

Answer: Option D

Explanation:

Oracle does not consider a transaction committed untilA. The Data is written back to the disk by DBWR B. The LGWR successfully writes the changes to redoC. PMON Process commits the process changes D. SMON Process Writes the data

Answer: Option B

Explanation:

5. What happens when a user issues a COMMIT?A. The CKPT process signals a checkpoint. B. The DBWn process wrtes the transactions changed buffers to the datafiles.C. The LGWR flushes the log buffer to the online redo log. D.

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The ARCn process writes the change vectors to the archive redo log.

Answer: Option C

Explanation:

6. Which two tasks occur as a database transitions from the mount stage to the open stage?A. The online data files & Redo log files are opened. B. Memory for the SGA is allocated.C. The Oracle password file is opened. D. Stored procedures are pinned in the library cache.

Answer: Option A

Explanation:

7. In the event of an Instance failure, which files store command data NOT writt

en to the datafiles?A. Control files B. Online redo logsC. Network segment D. Archived redo logs

Answer: Option B

Explanation:

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