Novell EDIRECTORY 8.8 - GUIDE, Manual

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Repairing the Novell eDirectory Database 259
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This operation provides a new point of reference to the master replica so that all updates to replicas
of the selected partition are current.
This operation is always performed on the master replica of a partition. The master replica does not
need to be the local replica on this server.
Time stamps are placed on objects when they are created or modified, and they must be unique. All
time stamps in a master replica are examined. If any time stamps are postdated to the current
network time, they are replaced with a new time stamp. If the time stamp is current, a new time
stamp is not issued. After all time stamps are consistent in time, a new epoch is declared.
Use this operation if you notice a discrepancy between objects in a replica or in an object’s
properties. For example, if you update your login script but your old login script still appears when
logging in, you should check to ensure that replicas are synchronizing properly. If the differences
between the time stamps in the future and the current time is not more than minutes, eDirectory will
eventually correct the condition by itself. Declaring a new epoch is a very expensive operation, and
should not be used regularly.
Novell eDirectory is a loosely consistent database, so you should allow for five to ten minutes
before checking replica synchronization. This operation results in the following conditions:
• A new epoch is declared on the master replica, possibly affecting all objects in the replica.
• All time stamps are examined and repaired as required.
• Updates are not accepted from replicas with postdated time stamps (epochs) until the replicas
are synchronized.
• A replica receives a copy of all objects in a master replica or any other replica that has received
a new epoch.
• The replica becomes the same epoch as the master replica.
• Any modifications from a previous epoch are lost.
• The master replica does not need to reside on the current server, but you must have the
Supervisor right to the master replica to perform the repair operation.
• The other replicas are put in a new state.
To repair time stamps and declare a new epoch:
1 In Novell iManager, click the Roles and Tasks button .
2 Click eDirectory Maintenance Utilities > Replica Repair .
3 Specify the server that will perform the operation, then click Next .
4
Specify a username, password, and context for the server where you will perform the operation,
then click
Next .
5
Click Repair Timestamps and Declare a New Epoch , then click Next .
6 Follow the online instructions to complete the operation.
10.4.4 Designating This Server As the New Master Replica
This operation designates the local replica of the selected partition as the master replica. You can use
this operation to designate a new master replica if the original one is lost. A master can be lost if the
server that contains the master replica has a hard disk failure and must be replaced.