Database Reference
In-Depth Information
Machine is Admin Server host. Performing Admin Server backup...
Exporting emoms properties...
Exporting secure properties...
Exporting configuration for pluggable modules...
Preparing archive file...
Backup has been written to file: /mnt/backup/opf_ADMIN_20121104_224806.bka
The export file contains sensitive data.
Please ensure that it is kept secure.
ExportConfig completed successfully!
In addition to backing up the OMS configuration, a backup of the Oracle inventory and output of the
opatch
lsinventory -detail
command should also be performed.
The following example generates the
opatch
inventory output and writes it to a shared filesystem.
$OMS_HOME/OPatch/opatch lsinventory -detail > /mnt/backups/opatch_bkup.log
The backup of the OMS can either be done manually or scheduled via the Enterprise Manager Cloud Control
Job System.
Management Agent Backup
The management agents are stateless, so no backups are necessary. Instead, a reference gold image of the agent
should be created for all platforms being monitored. Any patches and customizations should be included in the gold
configuration. In the event that a management agent is lost, it should be installed from the reference gold image.
Recovery
Performing regular backups of each Enterprise Manager Cloud Control component is important. However, of even
more significance is the ability to restore the components successfully if needed. Enterprise Manager recovery may
require recovery of several components including the repository, management service, and agents depending on
the nature of the problem. For example, recovering the management service in a scenario where the host is lost may
require additional steps compared with restoring the management service to the original host. You will examine these
scenarios in the following sections.
Repository Recovery
The Cloud Control console will be unavailable in the event that the OMS is down. To restore the repository database,
the RMAN command-line utility should be used. With RMAN, you can restore the database by using either a full
recovery or a point-in-time recovery (see the
Oracle Database Backup and Recovery Guide
). In the case of the latter,
you may need to resynchronize agents that are out of sync with the repository. To resynchronize the agent by using
EMCTL, use the following syntax:
emctl resync repos (-full|-agentlist "agent names")
[-name "resync name"]
[-sysman_pwd "sysman password"]
