sqlserver2005 limitation to extract TIMESTAMP data

Hi,
I have created one Linked server to fetch the data from Oracle server.
I have two tables at Oracle server
1. EMP_Tbl1 (Emp_Cd VARCHAR2(10))
2. EMP_Tbl2 (EMP_ID NUMBER, Emp_Cd VARCHAR2(10))
I can connect to EMP_Tbl1 table through my linked server at SQL Server 2005.
WHILE I cann't connect to EMP_tbl2.

ERROR:
The OLE DB provider "OraOLEDB.Oracle" for linked server "Linked_Facets" supplied inconsistent metadata for a column. The column "EMPID" (compile-time ordinal 1) of object ""SYSTEM"."EMP_ASH"" was reported to have a "DBTYPE" of 5 at compile time and 130 at run time.
Reason:
EXEC sp_addlinkedserver
@server='Linked_Facets'
,@srvproduct='ORACLE'
,@provider='OraOLEDB.Oracle'--'OraOLEDB.Oracle'
,@datasrc='ameri.corp.ads.valuelabs.net'
I am using 'OraOLEDB.Oracle' as the provider. This has its own limitations. How to conquer this?