Advice on indexing names and phone numbers

Hi!
I currently have a database with 2,6 million records containing names, addresses and phone numbers. I would like to do fast search like: Give me all persons called "Hansen" living on "Elm street". More complex queries like "%sen" living on "%street%" with a phone number like "3888____".
I'm running on a huge Windows 2000 server with Oracle 8.1.7
I currently have indexed the fields with interMedia and substring indexing. Below is my setup.
BEGIN
ctx_ddl.create_preference('tdk_store', 'BASIC_STORAGE');
ctx_ddl.set_attribute('tdk_store','I_TABLE_CLAUSE',
'TABLESPACE tdk_imt STORAGE (INITIAL 4M NEXT 512K PCTINCREASE 0)');
ctx_ddl.set_attribute('tdk_store','K_TABLE_CLAUSE',
'TABLESPACE tdk_imt STORAGE (INITIAL 4M NEXT 512K PCTINCREASE 0)');
ctx_ddl.set_attribute('tdk_store','R_TABLE_CLAUSE',
'TABLESPACE tdk_imt STORAGE (INITIAL 4M NEXT 512K PCTINCREASE 0)');
ctx_ddl.set_attribute('tdk_store','N_TABLE_CLAUSE',
'TABLESPACE tdk_imt STORAGE (INITIAL 4M NEXT 512K PCTINCREASE 0)');
ctx_ddl.set_attribute('tdk_store','I_INDEX_CLAUSE',
'TABLESPACE tdk_imt STORAGE (INITIAL 4M NEXT 512K PCTINCREASE 0)');
ctx_ddl.set_attribute('tdk_store','P_TABLE_CLAUSE',
'TABLESPACE tdk_imt STORAGE (INITIAL 4M NEXT 512K PCTINCREASE 0)');
ctx_ddl.Create_Preference ( 'tdk_wordlist', 'basic_wordlist' );
ctx_ddl.Set_Attribute ( 'tdk_wordlist', 'substring_index', 'true');
end;
CREATE INDEX tdknavn ON tdk ( navn )
INDEXTYPE IS ctxsys.context
parameters ('WORDLIST tdk_wordlist STORAGE tdk_store');
CREATE INDEX tdkadresse ON tdk ( adresse )
INDEXTYPE IS ctxsys.context
parameters ('WORDLIST tdk_wordlist STORAGE tdk_store');
CREATE INDEX tdktelefon ON tdk ( telefon )
INDEXTYPE IS ctxsys.context
parameters ('WORDLIST tdk_wordlist STORAGE tdk_store');
Query like this gives horrible execution times:
SELECT count(*)
FROM tdk
WHERE contains(navn, 'bedsted') > 0
AND contains(adresse, 'gade') > 0
A query like this caused a dump:
SELECT count(*)
FROM tdk
WHERE contains(adresse, '%gade%') > 0
Is this a stupid approach??

Yes it caused a core dump! End-of-file on communication channel.
I just learned about the catsearch function. I read in this forum that is doesn't support wildcards until 9i. So I have to use contains for now.
But... is catsearch faster than contains when you combine to catsearch' in one where clause?
Another question: Is catsearch only faster than contains when you combine it with structured data??

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Hi,
Erhan_toronto wrote:
I am using below query to compare two indexes from 2 different users but even though index name and columns are same... result shows me they are different.. what I am doing wrong? Thanks
WITH t AS
        (SELECT COUNT (DISTINCT index_owner || index_name || indexed_cols)
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