When you encrypt an existing, unencrypted database, you can specify
whether the database should be encrypted using a boot password
(
See the
Encrypting a database is a time-consuming process because it involves encrypting all of the existing data in the database. If the process is interrupted before completion, all the changes are rolled back the next time the database is booted. If the interruption occurs immediately after the database is encrypted but before the connection is returned to the application, you might not be able to boot the database without the boot password or external encryption key. In these rare circumstances, you should try to boot the database with the boot password or the external encryption key.
To encrypt an existing unencrypted database:
If
After you encrypt an existing, unencrypted database, be sure to check for
If you disabled log archival before you encrypted the database, create a new
backup of the database after the database is encrypted. For more information,
see the section "Backing up and restoring databases" in the