While performing "clone errata" action "Internal Server Error" persists in RHN Satellite webui

Issue

• While performing "clone errata" action in Red Hat Network(RHN) Satellite webui, it leads to "internal server error" in satellite webui. For this action following traceback received:

Error message: 
          RHN::Exception: DBD::Oracle::st execute failed: ORA-00001: unique constraint (RHNSAT.RHN_CE_CE_UQ) violated (DBD ERROR: OCIStmtExecute) [for Statement "INSERT INTO rhnChannelErrata 
               (errata_id, channel_id) 
        VALUES (:eid, :cid) 
        " with ParamValues: :eid=21604, :cid='1162']