There’s an issue in EBS 12.2 and database 18.104.22.168 versions related to Materialized Views. While executing ADOP (prepare, apply, finalize or cutover) phases, the cycle could fail due to an ORA-600 : internal error code, arguments: [kqllod:no stub for dependency parent] error.
After working with Oracle, they provided information about BUG 27883586 related to MView Refresh or Create while they are editioned.
The solution is to apply patch 27883586 to the database which is currently available for August 2017 release and then recreate the MViews. Oracle also released a merge patch on top if this (28820125).
If you need it for a different release, please contact Oracle to provide it.