
72 Security and Administration
NN10031-111 Standard MCP 1.1 FP1 (02.02) April 2003 Copyright © 2003, Nortel Networks
Nortel Networks Confidential
The following two types of backups are supported in the Database
Module:
• Backup and restore using export and import of data
OR
• Backup and restore using Recovery Manager (RMAN)
Table 10 compares the Export/Import and RMAN backup and recovery
methods.
CAUTION
Using Recovery Manager (RMAN), archive logs can
fill up available disk space if backups are not done
regularly.
It is recommended that the Export/Import method be
used to backup and restore data.
Table 10, “Comparing backup and recovery
methods,” on page 72 outlines the major differences
between the two types of backups.
Table 10 Comparing backup and recovery methods
Export/Import method RMAN method
Simple to perform More functionality but more
complicated to perform
No archive logs Archive logs could fill up disk
space if regular backups are not
scheduled
Incremental backups are not
available
Incremental backups are
available
Point-in-time recovery is not
available. During recovery, data
written between the last backup
and the point of failure is lost
Point-in-time recovery is
available. During recovery, data
written between the last backup
and the point of failure can be
recovered
Backups are performed on one
database
Backups must be performed on
both databases at the same time
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