How to create a Context index on a Substitutable Column ?

Hi all,
I have a type t1 and a subtype t2 which defines a new
sys.XMLType column d and a table t_tab of t1.
If I issue the following :
create index t_idx on t_tab t(treat(value(t) as t2).d) indextype
is ctxsys.context;
I get the following message:
ERROR at line 1:
ORA-29855: error occurred in the execution of ODCIINDEXCREATE
routine
ORA-20000: Oracle Text error:
DRG-50857: oracle error in drsxsopen
ORA-00904: invalid column name
ORA-06512: at "CTXSYS.DRUE", line 157
ORA-06512: at "CTXSYS.TEXTINDEXMETHODS", line 176
Any suggestion ?
Thanks
Alex

Alex,
Please file an iTAR report at http://metalink.oracle.com. This
could be a known bug.
Regards,
Geoff
Hi all,
I have a type t1 and a subtype t2 which defines a new
sys.XMLType column d and a table t_tab of t1.
If I issue the following :
create index t_idx on t_tab t(treat(value(t) as t2).d) indextype
is ctxsys.context;
I get the following message:
ERROR at line 1:
ORA-29855: error occurred in the execution of ODCIINDEXCREATE
routine
ORA-20000: Oracle Text error:
DRG-50857: oracle error in drsxsopen
ORA-00904: invalid column name
ORA-06512: at "CTXSYS.DRUE", line 157
ORA-06512: at "CTXSYS.TEXTINDEXMETHODS", line 176
Any suggestion ?
Thanks
Alex

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