# Repairing, Optimizing, Purging, and Deleting Collections

Verity collections that return erroneous data or have other problems can often be repaired using the Repair and Optimize feature in the Verity page of the ColdFusion Administrator.

When you need to clear a collection of data, use the Purge feature to delete the contents of the collection without deleting the collection itself.

### Caution!

A limitation in the Verity implementation may cause problems if you repair a Verity collection and then attempt another action such as a Purge before the repair has completed processing. In the event that a problem does occur, you should delete the affected collection, re-create it, and then re-populate the collection with the original data.

The safest approach is this: During a repair, NO OTHER ACTION should be taken.