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Masking disables redo logging and flashback logging to purge any original unmasked data from logs. However, in certain circumstances when you only want to test masking, roll the changes back, and retry with more mask columns, it is easier to uncheck this box and use a flashback database to retrieve the old unmasked data after it has been masked. You can use Enterprise Manager to flashback a database.
Flashback database lets you quickly recover an Oracle database to a previous time to correct problems caused by logical data corruptions or user errors. If a flash recovery area is configured, then you can return the database to a prior time.
Use the Flashback Database function to quickly recover an Oracle database to a previous time to correct problems caused by logical data corruptions or user errors. To flashback a database, Oracle uses past block images to back out changes to the amount of time it takes to flashback a database is proportional to how far back you need to revert the database, rather than the time it would take to restore and recover the whole database. Oracle returns datafiles to the previous point-in-time, but not auxiliary files, such as initialization parameter files.
Oracle Enterprise Manager enables you to recover the entire database to current time or a point-in-time in the past. You can use flashback database if the flashback logging has been enabled and the point-in-time is within the flashback range, or if you have a guaranteed restore poing created earlier.
Shows whether Flashback Logging is enabled or disabled. Flashback logs are Oracle-generated logs used to perform flashback database operations. Oracle can only write flashback logs to the flash recovery area. They cannot be backed up to disk.
If you have enabled Flashback Database, then you can also
フラッシュバック・データベースを有効化した場合は、次の操作も実行できます。
Rewinding the entire database with Flashback Database
フラッシュバック・データベースを使用したデータベース全体の巻戻し
Oracle Flashback Database, which enables you to revert the entire database to a past point in time
Oracleフラッシュバック・データベース、データベース全体の過去の時点への巻戻しが可能
Oracle Flashback Database, which enables you to rewind the entire database to a past point-in-time
Oracleフラッシュバック・データベース、データベース全体の過去の時点への巻戻しが可能
Using Flashback Database and a physical standby database, you can configure a temporary clone database for testing and reporting. The temporary clone can later be resynchronized with the primary database.
Rewind the entire database with Oracle Flashback Database
Oracleフラッシュバック・データベースを使用したデータベース全体の巻戻し
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