June 2013
Beginner
404 pages
9h 40m
English
Content preview from Oracle Data Guard 11gR2 Administration : Beginner's GuideBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Using flashback on a standby database
Flashback is a useful feature introduced in Oracle database version 9i and more properties were added on in the next versions, 10g and 11g. When enabled, the flashback feature helps us recover data loss, corrupted data, or logical errors easily. In the following scenarios, we can use flashback with PITR (Point-in-Time Recovery) to recover data:
- Dropped tables
- Truncated tables
- Massive changes by inserts / updates / deletes
- Logical errors
If we're not using flashback, the steps to restore a table loss will be as follows:
- Restore the full database on a separate server using a backup performed before the table's
dropoperation. - After restoring the database, perform the
until timerecovery. - Open the database with
resetlogs ...
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