Hi, 

Basically I want to setup Replication between two servers, 'ORCL.REGRESS.RDBMS.DEV.US.ORACLE.COM' [10.2.0.1.0][Source] 
to 
'ORCL.US.ORACLE.COM' [10.1.0.2.0][Destination]
(Advanced master-to-master replication, Sync), using Scripts.

When executing
REPADMIN  :orcl >/
BEGIN
DBMS_REPCAT.ADD_MASTER_DATABASE(
gname => '"GROUP1"', master => 'ORCL.US.ORACLE.COM');
END;

REPADMIN  :orcl >/
BEGIN
*
ERROR at line 1:
ORA-23375: feature is incompatible with database version at ORCL.US.ORACLE.COM
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 86
ORA-06512: at "SYS.DBMS_REPCAT_MAS", line 2159
ORA-06512: at "SYS.DBMS_REPCAT", line 146
ORA-06512: at line 2

let me make clear i had checked

REPADMIN  :orcl >select name, value from v$parameter where name='compatible';

NAME                                                                           VALUE
---------- ------------------
compatible                                                                       10.2.0.1.0

REPADMIN  :center >select name, value from v$parameter where name='compatible';

NAME                                                                             VALUE
---------- -------------------
compatible                                                                       10.1.0.2.0

Same on both Servers

REPADMIN  :orcl >show parameter compatible

NAME                                 TYPE        VALUE
------------------------------------ ----------- 
compatible                           string      10.2.0.1.0

REPADMIN  :center >show parameter compatible

NAME                                 TYPE        VALUE
------------------------------------ ----------- -----------
compatible                           string      10.1.0.2.0

REPADMIN  :orcl >SELECT * FROM v$version;

BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod
PL/SQL Release 10.2.0.1.0 - Production
CORE    10.2.0.1.0      Production
TNS for 32-bit Windows: Version 10.2.0.1.0 - Production
NLSRTL Version 10.2.0.1.0 - Production

REPADMIN  :center >SELECT * FROM v$version;

BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - Prod
PL/SQL Release 10.1.0.2.0 - Production
CORE    10.1.0.2.0      Production
TNS for 32-bit Windows: Version 10.1.0.2.0 - Production
NLSRTL Version 10.1.0.2.0 - Production

5) grant privileges.

execute dbms_repcat_admin.grant_admin_any_schema( ’repadmin’); grant comment any table to repadmin; 
grant lock any table to repadmin;

what other issue can be???

Kind Regards,
Thanks.

Muhammad Aurangzaib
DBA
itroome@yahoo.com
+923009737559