单选题You experience a loss of the disk on which the USER_DATA tablespace data files are stored. You attempt to recover the data files but discover that the archived redo log file with sequence number 45, which is needed to perform complete recovery, is invalid. You then begin incomplete recovery-You receive this prompt:  ORA-00279:change 309012...03/09/01 11:33:56 needed for thread ORA-00289: suggestion :   /disk1/archive/arch_45.rdo ORA-00280: change 309012 for thread 1 is in sequence #45 Specify log:  {=suggested | filename | AUTO | CANCEL}  What is the correct response?()AEnter the keyword AUTO.BEnter the keyword CANCEL.CPress the Enter or Return key.DProvide the filename ’/disk1/archive/arcg_46.rdo’

单选题
You experience a loss of the disk on which the USER_DATA tablespace data files are stored. You attempt to recover the data files but discover that the archived redo log file with sequence number 45, which is needed to perform complete recovery, is invalid. You then begin incomplete recovery-You receive this prompt:  ORA-00279:change 309012...03/09/01 11:33:56 needed for thread ORA-00289: suggestion :   /disk1/archive/arch_45.rdo ORA-00280: change 309012 for thread 1 is in sequence #45 Specify log:  {=suggested | filename | AUTO | CANCEL}  What is the correct response?()
A

Enter the keyword AUTO.

B

Enter the keyword CANCEL.

C

Press the Enter or Return key.

D

Provide the filename ’/disk1/archive/arcg_46.rdo’


参考解析

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单选题Your database operates in ARCHIVELOG mode and user/x7fmanaged consistent backups are performed every Sunday night. On Tuesday, at 9:00 a.m. the current log sequence number was 369. Also, on Tuesday you lost the data file belonging to the SYSTEM tablespace and an archivelog file (sequence number 356) that contained redo entries between 8:00 a.m. and 8:30 a.m. With reference to this scenario, what would you do to recover the database?()Arestore all the data files from last Sunday’s backup, and then perform a time­based recoveryBrestore all the data files from last Sunday’s backup, and then perform a cancel­based recoveryCrestore all the data files from last Sunday’s backup, and then perform a change­based recoveryDrestore only data files that belong to the SYSTEM tablespace from last Sunday’s backup, and then perform a complete recovery

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单选题You are working on Oracle Database 10g, which is in ARCHIVELOG mode. All the archived log files are intact. In which scenario would performing a recovery require the opening of the database with the RESETLOGS option?()A loss of one of the tablespacesB loss of a system data fileC loss of one of the control filesD loss of a tempfileE loss of the only member of an unarchived redo log groupF loss of a member from each redo log group

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单选题You database operates in ARCHIVELOG mode and user-managed consistent backups are performed every Sunday night. On Tuesday, at 9:00 a.m. the current log sequence number was 369. Also, on Tuesday you lost the data file belonging to the SYSTEM tablespace and an achivelog file (sequence number 356) that contained redo entries between 8:00 a.m. and 8.30 a.m. With reference to this scenario, what would you do to recover the database?()A Restore all the data files from last Sunday’s backup, and then perform a time-based recovery.B Restore all the data files from last Sunday’s backup, and then perform a cancel-based recovery.C Restore all the data files from last Sunday’s backup, and then perform a change-based recovery.D Restore only data files that belong to the SYSTEM tablespace from last Sunday’s backup, and then perform a complete recovery.

单选题In your production database, users report that they are unable to generate reports on an important table because it does not contain any data. While investigating the reason, you realize that another user executed the TRUNCATE TABLE command, which accidentally caused the data to be lost. Now you want to recover the lost data of the table without affecting objects in other schemas.  Which method must you use to recover the lost data?()A Complete Recovery with online redo logB Complete Recovery with archived redo logC Tablespace Point-in-Time Recovery (TSPITR)D Incomplete Recovery with system change number (SCN)