Problem finding docs using content index in DB with different charactersets

Question

Sorry for duplicating thread from [url http://forums.oracle.com/forums/thread.jspa?threadID=653067&tstart=0]this thread in Oracle Text forum, but it seems quite slow compared to this one, so probably someone has some suggestion.
Problem explanation:
DB version 10.2.0.1 SE on windows
database characterset AL32UTF8
I am creating following context index:
create index myindex on g(Content)
indextype is ctxsys.context
  parameters('filter ctxsys.auto_filter
  section group ctxsys.null_SECTION_GROUP');With following query:
SELECT distinct filename FROM g f
WHERE contains(F.Content, 'latiinju') >0;I can find latin symbols in ansi, utf-8 encoded text documents and msword and msexcel documents.
With following query:
SELECT distinct filename FROM g f
WHERE contains(F.Content, 'latviešu') >0;I can find latvian symbols in utf-8 encoded text documents and msword and msexcel documents, which basically is OK.
However there is another unfortunately already production database
10.2.0.3.0 SE on windows
with characterset BLT8CP921
and with index as defined above queries find absolutely nothing for both latin and latvian texts.
As soon as I've added another column "cset" in the table and filled it up with AL32UTF8 I can find latin characters for the same cases as in db above.
Index in this case is as follows:
create index myindex on g(Content)
indextype is ctxsys.context
  parameters('filter ctxsys.auto_filter
  section group ctxsys.null_SECTION_GROUP
  charset column cset');However the problem is that for latvian characters it can find only UTF-8 encoded text files, but not doc and xls files and that's absolutely not OK.
I've tried also another charactersets in cset columns, but without any success.
So the question is - is there any possibility somehow to create the content index that it is possible to find also latvian specific symbols in doc and xls files in DB with characterset BLT8CP921?
Of course the ultimate solution would be to recreate db with AL32UTF8 characterset but I'd like to avoid that if possible.
TIA
Gints Plivna

Answer 1

I have applied performance tuning steps, like JAVA_POOL_SIZE, SGA_MAX_SIZE, increase table spaces size and change some other DB parameters. After applied, problematic index has been created without error and application is running fine without any error. Many thanks for your prompt suggestion, by which I could narrow down my problem. So, as my problem has been resolved, so please close this thread.
Regards,
Farhan Mazhar