SQL Server 2005 Linked Servers (OraOledb / 10g)

Question

I am running SQL Server 2005 on a 64 bit Server. I have a linked server using OraOledb (Oracle client 10g) to Oracle. "Select" statements works without any problems, but "Update" and "Delete" statements return the following error:
Msg 7333, Level 16, State 2, Line 2
Cannot fetch a row using a bookmark from OLE DB provider "OraOLEDB.Oracle" for linked server "ORACLESERVER".

Answer 1

Using the four part statement works, but does not use the indexes in oracle. Therefore, if you have a big update, it will run very slow. Has anyone figured a way to use the OPENQUERY statement in SQL Server 2008? Should I give up on this idea??? Here is what I am trying to do:
UPDATE     OPENQUERY(ORA_CP, 'SELECT     values... FROM table1 LES
                    INNER JOIN table SPD ON SPD.Year = LES1.Year AND
                              SPD.Month = LES1.Month AND
                              SPD.Week = LES1.Week
               WHERE     TYPE IN (''E'',''S'',''I'')
                    AND PROJ_ID = ''XXXXXX.XXX.XXX''')      
          SET          GOAL_AMT = GOAL_AMT
          FROM     dbo.table3 S
               INNER JOIN OPENQUERY(Linked_Server,
'SELECT values...
                              FROM table1 LES
                              INNER JOIN table SPD ON SPD.Year = LES1.Year AND
                              SPD.Month = LES1.Month AND
                              SPD.Week = LES1.Week
                         WHERE TYPE IN (''E'',''S'',''I'')
                              AND PROJ_ID = ''XXXXX.XXX.XXX''') A ON A.PROJ_ID = S.PROJ_ID AND
A.ORG_ID = S.ORG_ID AND
                                                  A.ACCT_ID = S.ACCT_ID AND
                                                  A.EMPL_VEND_ID = S.EMPL_VEND_ID AND
                                                  A.CP_DATA_DATE = S.CP_DATA_DATE