Database Reference
In-Depth Information
Summary
Backup and Recovery are key elements of database operations. Nothing is as important as a backup and a proven
and tested recovery strategy when it comes to a failure. And please remember that it is not a question of whether
or not the failure occurs, but rather when it does so. Often the problem is not even related to your database. Even
the most rigorously managed database with the best change control in the world is not immune to a bug in the
storage controller's firmware writing garbage into data files. Being able to restore service at any required moment is
paramount, and provides peace of mind.
Pluggable Databases have been covered in RMAN enhancements, and many scenarios with PDBs are possible.
The enhancements of point in time recoveries with PDBs are especially welcome to database administrators since they
make for a lot less coordination effort between stakeholders. Should it really be necessary to perform a point in time
recovery the least number of people will be affected by the outage. Depending on the size of the database however
it becomes impractical or too time consuming to restore a database and another option has to be chosen. The most
common option to consider for the Oracle database is Data Guard which you read about in Chapters 9 and 10.
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