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Chapter 4 • Working with Quality Center Synchronizer
100
Resetting a Link
Each synchronization link in the Synchronizer has an associated time
stamp, and each record mapping within a link has a version. The time
stamp represents the time the link was last handled by the Synchronizer.
The version enables the Synchronizer to identify the records that can be
synchronized.
When the Synchronizer runs a synchronization task for a link, it updates the
time stamp for the link at the start of the task’s execution. In addition, when
the Synchronizer handles the successful synchronization of a paired record
mapping, it adds a record containing the versions of each pair of
synchronized records to the database.
The Synchronizer uses the time stamp and versions when it determines
which records to synchronize. In some circumstances, you may want to
override the automatic time stamp and the record version history:
➤ Time stamp. You can override the automatic time stamp and reset the time
stamp to a time prior to the last synchronization. This is useful if there were
issues with the latest synchronization of some records, and you want to
revert to an earlier version of these records so that you can run a
synchronization task again.
➤ Synchronization history. You can perform a complete reset to clear both the
time stamp and the version history for the mapped records. This is useful
when a field mapping changes, and you want to synchronize the mapped
entities as if you created a new link.
Consider carefully the consequences before deciding to reset the time stamp
for a link, and which option to use when resetting it.
Tip: You can sometimes achieve the same outcome as resetting the link’s
time stamp by running a full synchronization task. For more information on
full synchronization tasks, see “Full Synchronizations” on page 42.