Merge - update table@dblink

Question

Hi all,
my need is to perform merge:
1) update table2@dblink only when some column(s) is/are different than in local table1
2) insert rows into table2@dblink when not present.
(2) works fine.
(1) works strange. It was tested successfully at test server where both table1 and table2 are local. It just doesn't work at production server where table2 is remote (using dblink), it doesn't report any error, but values just are not updated.
Query code:
merge into remote.table2@dblink rr
using
select
  ID                       ,
  NAME                   
from local.table1
) hh
on ( hh.id = rr.id )
when matched
           then update set
                   rr.NAME                     =  hh.NAME
                where
                   rr.NAME                     <> hh.NAME
when not matched then insert (
                              rr.ID                       ,
                              rr.NAME
                       values (
                              hh.ID                       ,
                              hh.NAME
                              );Oracle version:
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
(the same on local and remote servers).
The content of table:
ID
NAME
1
Germany
2
Spain
3
Italy
4
Portugal
4 rows selected.Please, help me.

Answer 1

Looks like Bug:
Bug 9816678 - Merge on a remote table using local table gives wrong results. [ID 9816678.8]
Fixed in 11.2.0.3 ...