Hierarchical Query/START WITH/Remote Database error

Question

Running on: EE 10.1.0.4.0 - 64bit
Remote DB: EE 11.1.0.6.0 - 64bit Production
Trying:
<PRE>
WITH
Moo
AS
SELECT
1
FROM
Dual@EPO11_Link A
CONNECT BY
LEVEL = 1
START WITH
EXISTS (SELECT * FROM Dual@EPO11_Link B WHERE A.Dummy = B.Dummy)
SELECT
FROM
Moo;
</PRE>
Getting:
ORA-00904: "A3"."$nso_col_1": invalid identifier
ORA-02063: preceding line from EPO11_LINK
00904. 00000 - "%s: invalid identifier"
*Cause:   
*Action:
- The CTE's query runs fine on its own.
- removing the @ from the first Dual@EPO11_Link , works.
- removing the @ from the second Dual@EPO11_Link , errors:
ORA-02016: cannot use a subquery in a START WITH on a remote database
02016. 00000 - "cannot use a subquery in a START WITH on a remote database"
*Cause:   
*Action:
Error at Line: 10 Column: 24
- Removing the START WITH clause, works.
- Changing the START WITH clause's "=" to "IN", works.
- Changing the START WITH to EXISTS (SELECT * FROM Dual@EPO11_Link B WHERE A.Dummy = B.Dummy) results in:
ORA-00904: "A3"."DUMMY": invalid identifier
ORA-02063: preceding line from EPO11_LINK
00904. 00000 - "%s: invalid identifier"
*Cause:   
*Action:
Am i missing something here?
Edited by: Brian Tkatch on Jan 19, 2012 1:27 PM

Answer 1

Searching error messages books:
These have the ORA-02016:
8: http://docs.oracle.com/cd/A58617_01/server.804/a58312/newch228.htm#19589
9: http://docs.oracle.com/cd/A91202_01/901_doc/server.901/a90202/e1500.htm#1001663
These do not have the ORA-02016:
10R1: http://docs.oracle.com/cd/B14117_01/server.101/b10744/e1500.htm#ORA-02009
10R2: http://docs.oracle.com/cd/B19306_01/server.102/b14219/e1500.htm#ORA-02009
11R1: http://docs.oracle.com/cd/B28359_01/server.111/b28278/e1500.htm#ORA-02009
Starting with (heh) 10R1 a bunch of error messages were removed regarding hierarchical queries, including this one.
Is it allowed or not?