SAPDBA creates working files, directories, and reports during normal operation and these are not deleted in case you have to use them in the event of difficulties. You need to occasionally perform housekeeping to remove any of these that are no longer required.

Do not delete recent data in case it is needed in the event of problems. Allow a sensible period to elapse before deletion. If you are not sure, contact the Informix hotline.
Procedure
There are a number of different kinds of files and directories that you need to clear up. For more information, see
SAPDBA Files, Directories, and Reports.