When an OUBI bug requires a fix to the Oracle Warehouse Builder (OWB) code, the fix is delivered as an MDL export file that will need to be imported and deployed in OWB. If more than one bug is being patched, then a recent question came in that asked if it would be possible to import one after the next, and then do the deploy steps once?

The answer is Yes, all of the imports can be done before any of objects are deployed.

Once all of the objects have been deployed, then the TCL scripts that need to be rerun can be run, and then the objects that were changed can be deployed.

The order that the MDL files are loaded does not matter unless the same object is in two or more MDL files. In that case, the latest MDL file should be loaded last. For example, if two MDL files both contain changes to the SPLMAP_F_RECENT_CREW mapping, and one was created on January 2, 2009 and the second one was created on March 14, 2009, then the January 2 file should be loaded first and the March 14 file should be loaded second.

Note that if the MDL files are always loaded in the order that they were created by Release Services, then this will work correctly.