Oracle Warehouse Builder user Hanming Tu contrinbuted a Korn Shell script and OMB*Plus script to export all the projects in a OWB repository to MDL. (It should be possible to write a Win32-specific wrapper for use with the OMB*Plus script as well, if you don’t have a korn shell implementation on your Windows box.)
Known limitations:
- it requires single user mode to connect to the repository
- it stops the export if users are still in a project
You can download the script here