OCP 1Z0 053 89

89.You are using recovery Manager (RMAN) with a recovery catalog to backup up your production

database. The backups and the archived redo log files are copied to a tape drive on a daily basis. The

database was open and transactions were recorded in the redo logs. Because of fire in the building you

lost your servers having the production database and the recovery catalog database. The archive log files

generated after the last backup are intact on one of the remote locations. While performing a disaster

recovery of the production database what is the next step that you must perform after restoring the data

files and applying archived redo logs?

A. Open the database in NORMAL mode

B. Open the database in read-only mode

C. Open the database in RESTRICTED mode

D. Open the database with the RESETLOGS option

Answer: D

在线日志丢失，是不完全恢复。

启动实例时要resetlogs

http://docs.oracle.com/cd/E11882_01/backup.112/e10642/glossary.htm#BRADV90261



RESETLOGS

A technique for opening a database that archives any current online redo logs (if using

ARCHIVELOG

mode), resets the log sequence number to 1, and clears the online redo logs. An

ALTER DATABASE
OPEN RESETLOGS

statement begins a new database incarnation. The starting SCN for the new incarnation, sometimes called the

RESETLOGS

SCN, is the incomplete recovery SCN of the media recovery preceding the

OPEN
RESETLOGS

, plus one.

An

ALTER DATABASE OPEN RESETLOGS

statement is required
after incomplete recovery or recovery with a backup control file. An

OPEN

RESETLOGS

operation
does not affect the recoverability of the database. Backups from before the

OPEN

RESETLOGS

operation
remain valid and can be used along with backups taken after the

OPEN

RESETLOGS

operation
to repair any damage to the database.