ORA-29902 error with CONTAINS()

Question

Hello,
I have trouble using the CONTAINS() function on an indexed document.
I created the index with
create index ikenndatenTextIndex
on kenndaten_as_column_500 x (kenndaten)
indextype is ctxsys.context
+++++++++++++++++++++++++++++++++++++++++++++
with Result:
Index created
+++++++++++++++++++++++++++++++++++++++++++++
where the column "kenndaten" contains XMLType Documents
Now, typing in isqlplus:
select extract(x.kenndaten,'/kenndaten/schlagworte')
from kenndaten_as_column_500 x
WHERE CONTAINS(kenndaten,'$("taken") INPATH (/kenndaten/schlagworte)') > 0;
++++++++++++++++++++++++++++++++++++++++++++++++++++
gets the desired result:
EXTRACT(X.KENNDATEN,'/KENNDATEN/SCHLAGWORTE')
<schlagworte>group an corporate the taken </schlagworte>
++++++++++++++++++++++++++++++++++++++++++++++++++++
Here is the Problem:
If I do not look for "taken" but for "was":
select extract(x.kenndaten,'/kenndaten/schlagworte')
from kenndaten_as_column_500 x
WHERE CONTAINS(kenndaten,'$("was") INPATH (/kenndaten/schlagworte)') > 0;
++++++++++++++++++++++++++++++++++++++++++++++++++++
I get:
select extract(x.kenndaten,'/kenndaten/schlagworte')
ERROR at line 1:
ORA-29902: error in executing ODCIIndexStart() routine
ORA-20000: Oracle Text error:
+++++++++++++++++++++++++++++++++++++++++++++++++++++
Using {was} instead of "was", typing \w\a\s or simply using ...CONTAINS(kenndaten,'$(was) INPATH...
gets the same result
I have no problem looking for words like "and","or","inpath" and the like
Any ideas?
Gregor Heuer

Answer 1

HI,
I don't know very well Oracle Text, but perhaps the next doc could you help on this one :
http://www.oracle.com/technology/products/text/index.html
http://www.oracle.com/technology/oramag/oracle/04-sep/o54text.html
Nicolas.