You must run the cqdiagnostics.pl script to run the validatedb and describe subcommands. The cqdiagnostics.pl script sets the utility's class path environment variable and contains variables that correspond to all of the parameters needed to run the validatedb and describe subcommands. Before running the script, edit it to include values for your schema repository and user database and to specify which subcommand to run. You can create multiple versions of the script to represent the different database configurations that you plan to test on a regular basis.
%CLEARQUEST_HOME%\diagnostic
$CLEARQUEST_HOME/diagnostic
For example: C:\Program Files\IBM\RationalSDLC\ClearQuest\diagnostic