Informatica recommends that you back up the checkpoint files followed by the CDCT file and then the condense files. Back up the files during a period of low activity.

The CDCT file must be backed up in coordination with the checkpoint files. For every (2

n

-1) condense cycles completed, where

n

is the number of checkpoint files that you use, you must back up the CDCT at least once. If you do not back up the CDCT file in coordination with the checkpoint files and file corruption occurs, the CDCT file and the condense files to which the CDCT file points might no longer be synchronized.

For example, if you use eight checkpoint files and perform a file switch every 20 minutes, back up the CDCT file at least every ((2 * 8) - 1) * 20 = 300 minutes. Back up the checkpoint files before they are overwritten by a later condense cycle.

The frequency with which you back up the condense files is at your discretion.