Blackboard was taken offline for maintenance to the Oracle database relating to issues with Dataguard after the upgrade to 11g. A restart of the server was needed to apply the parameter settings.
Blackboard needed to be down to prevent database corruption during the work.
At 8:30 am the servers for Blackboard were taken down to the maintenance could be performed.
Maintenance was completed and all servers were allowed to sync.
By 9:00 am All systems were back online
The outage was expected to last 10 minutes. Extra time was taken to allows for server syncing.