User's Guide

Synchronize Databases

When NwDM is initially installed or when your network has significant changes, you can also synchronize the NwDM database with the NetView or OpenView topology database. Depending on the size of the topology database, database synchronization may take a significant amount of time to complete.

Database synchronization runs as a scheduled job. Therefore you can use the Jobs task panel to view the status of the job.

During synchronization, NwDM compares the list of devices in its database that have configurations with a configuration status of Active with the list of devices in the topology database. NwDM:

• Adds the device to its database if the device exists in the topology database but not in the NwDM database. After synchronization is complete, perform a Learn task for the device to add configuration information for the device to the NwDM database.
• Updates configuration information for any devices in the NwDM database for which the SNMP read or write community names are changed.
• Records in the job log any devices that exist in the NwDM database but do not exist in the topology database. You can delete these devices from the NwDM database.
• Records in the job log any devices for which the device type has changed. Typically, a change in the device type is a result of an IP address reassignment. Perform a Learn task for the device to update configuration information for the device in the NwDM database.

To display the Synchronize Databases task panel, click Synchronize Databases from the navigation tree.

This field...	Is used to...	It can contain...
Earliest start	Enter the earliest date and time that the Synchronize Databases task can start.	The format yy/mm/dd hh:mn d where: yy is the year (1-99) mm is the month (1-12) dd is the day of the month (1-31) hh is the hour of the day (1-24) mn is the minute of the hour (1-60) d is either AM (before noon) or PM (before midnight)
Latest start	Enter the latest date and time that the Synchronize Databases task can start.	The format yy/mm/dd hh:mn d where: yy is the year (1-99) mm is the month (1-12) dd is the day of the month (1-31) hh is the hour of the day (1-24) mn is the minute of the hour (1-60) d is either AM (before noon) or PM (before midnight)
Start now	Start the Synchronize Databases task immediately (when you click Apply).	Check mark if the box is selected.

These action buttons are available for the Synchronize Databases task panel:

Apply

Schedules the Synchronize Databases task as a job..

Help

Displays help for this task panel.