On R12 upgrade patch 6678700 getting error: ORA-00600: internal error code, arguments: [kksfbc-repar

Getting:     1  Run       AutoPatch R120 pl  mrpbv.odf                   FAILED        
     2  Run       AutoPatch R120 pl  payvwc.odf                  FAILED        
     3  Run       AutoPatch R120 pl  percrl.odf                  FAILED        
     4  Run       AutoPatch R120 pl  payacc.odf                  FAILED        
     5  Run       AutoPatch R120 pl  mrpfv.odf                   FAILED        
     6  Run       AutoPatch R120 pl  pyususw4.odf                FAILED

ORA-01012: not logged on
ORA-00600: internal error code, arguments: [kksfbc-reparse-infinite-loop], [0xF6863CB4], [], [], [], [], [], [], [], [], [], []

occurred while executing the SQL statement:

CREATE FORCE VIEW APPS.MRPBV_DEMAND_CLASSES ("DEMAND_CLASS", "MEANING",
 "DESCRIPTION", "START_EFFECTIVE_DATE", "END_EFFECTIVE_DATE",
 "ENABLED_FLAG", "LAST_UPDATE_DATE", "LAST_UPDATED_BY", "CREATION_DATE",
 "CREATED_BY") AS SELECT DEMAND_CLASS.LOOKUP_CODE , DEMAND_CLASS.MEANING ,
 DEMAND_CLASS.DESCRIPTION , DEMAND_CLASS.START_DATE_ACTIVE ,