DBA_REPCOLUMN_GROUP

All column groups of replicated tables in the database

Columns
   ___________________________
 
   SNAME
      Owner of replicated object
   ONAME
      Name of the replicated object
   GROUP_NAME
      Name of the column group
   GROUP_COMMENT
      Description of the column group

Related:

DBA_REPSCHEMA
DBA_REPCOLUMN