Saving queries executed in Oracle Text

I am gathering information on Oracle Text for use as a text query capability. My users would like to be able to execute the same queries so would like the ability to save their query parameters. Is this available in Oracle Text?

Yes - you can save queries as Stored Query Expressions.

Similar Messages

Problems with bound parameters in oracle text queries

Executing the following query I get strange effects depending on the value I pass for the search string :str ...
With value "Med" everything works fine and I get the results I have expected.
But when passing "Tech" as value to the query, the result is ORA-20000 and DRG-50901 (Oracle Text error, syntax error in parser)
select * from (
SELECT /*+ FIRST_ROWS */ *
FROM SERVICE_CATEGORY sCat
WHERE (
CONTAINS ( sCat.SERVICE_CATEGORY_C , '<QUERY><textquery grammar="CONTEXT"><progression><seq>{'
|| :str || '}</seq><seq>'
|| :str || '%</seq><seq>%'
|| :str || '%</seq><seq>fuzzy({'
|| :str || '},1,100,WEIGHT)</seq></progression></textquery></QUERY>', 1 ) <> 0 AND
sCat.SERVICE_TYPE_C IS NULL AND sCat.SERVICE_SPECIALTY_C IS NULL )
ORDER BY score(1) DESC ) where rownum <= 20
When passing the search string "Tech" directly to the query without using bound paramters, everthing works fine:
select * from (
SELECT /*+ FIRST_ROWS */ *
FROM SERVICE_CATEGORY sCat
WHERE (
CONTAINS ( sCat.SERVICE_CATEGORY_C , '<QUERY><textquery grammar="CONTEXT"><progression><seq>{'
|| 'Tech' || '}</seq><seq>'
|| 'Tech' || '%</seq><seq>%'
|| 'Tech' || '%</seq><seq>fuzzy({'
|| 'Tech' || '},1,100,WEIGHT)</seq></progression></textquery></QUERY>', 1 ) <> 0 AND
sCat.SERVICE_TYPE_C IS NULL AND sCat.SERVICE_SPECIALTY_C IS NULL )
ORDER BY score(1) DESC ) where rownum <= 20
Also, when I use >0 instead of <>0 everthing works fine:
select * from (
SELECT /*+ FIRST_ROWS */ *
FROM SERVICE_CATEGORY sCat
WHERE (
CONTAINS ( sCat.SERVICE_CATEGORY_C , '<QUERY><textquery grammar="CONTEXT"><progression><seq>{'
|| 'Tech' || '}</seq><seq>'
|| 'Tech' || '%</seq><seq>%'
|| 'Tech' || '%</seq><seq>fuzzy({'
|| 'Tech' || '},1,100,WEIGHT)</seq></progression></textquery></QUERY>', 1 ) > 0 AND
sCat.SERVICE_TYPE_C IS NULL AND sCat.SERVICE_SPECIALTY_C IS NULL )
ORDER BY score(1) DESC ) where rownum <= 20
Does anybody have an explanation for the strange effect when using a bound parameter in combination with <> 0?

I don't know why your query using bind variables is giving you a problem but use of literal inside CONTAINS second argument is encouraged anyway over bind variables starting with 10gR2 (unless you are confident enough about the cost and selectivity of your queries to the extent that you can use SQL hint instead). The literal replacement feature introduced in release 9i caused a hard-parse if the literal value changed but starting with 10gR2, at least for CONTAINS, a hard-parse is avoided even if the literal value has changed as long as the cost and selectivity is similar to an existing cursor in the library cache (e.g. within 10%).
Faisal

Index document with Oracle Text from an ECM without saving the content

Hi,
I have documents in a ECM (Alfresco, UCM and more) and I would like Oracle Text to index the document without saving the content. I want to save space and not have redundant information. I would use Oracle Text to search for document's identification (ID) and fetch the document from the ECM using the ID.
Is it possible ?
Do I have to use Secure Enterprise Search ?
Thanks
Simon

I want to save space and not have redundant information.The database space or the disk space (in OS)?
If it the database space, it is not possible to index/serach without storing the file conetents.
using , FILE_DATASTORE you can save the file in the disk (OS) and index them.
When you remove the file, you need to re-index it.
I donot see any other ways.
Do I have to use Secure Enterprise Search ?SES also uses Oracle Text as its base. It also uses FILE_DATASTORE. But the re-indexing part is automated using crawlers.

Oracle text contains and mixed queries

Trying to optimize the following sql statement using oracle text. When postal code is given, I would like to limit the contains to only filter the smaller subset. Both of these queries produce the same results in the same amount of time with practically identical explain plans. Is there any way to get contains to only search the subset of postal codes and not the entire table.
select *
from ADDRESS
where CONTAINS(ADDRESS1_TEXT, ' "1%" AND "%str%" ') > 0
and POSTAL_CODE like '77539%'
select *
from ADDRESS
where address_id in (select address_id from address where POSTAL_CODE like '77539%')
and CONTAINS(ADDRESS1_TEXT, ' "1%" AND "%str%" ') > 0
Thanks for any help,
Gus

You can use FILTER BY in the index creation and SDATA in the query, as shown below.
SCOTT@orcl12c> CREATE TABLE address
2    (address1_text VARCHAR2(15),
3      postal_code    VARCHAR2(15))
4 /
Table created.
SCOTT@orcl12c> INSERT INTO address VALUES ('12 astrb', '775391')
2 /
1 row created.
SCOTT@orcl12c> INSERT INTO address
2 SELECT SUBSTR (object_name, 1, 15),
3          object_id
4 FROM all_objects
5 /
89979 rows created.
SCOTT@orcl12c> CREATE INDEX test_idx
2 ON address (address1_text)
3 INDEXTYPE IS CTXSYS.CONTEXT
4 FILTER BY postal_code
5 /
Index created.
SCOTT@orcl12c> SET AUTOTRACE ON EXPLAIN
SCOTT@orcl12c> SELECT * FROM address
2 WHERE CONTAINS
3            (address1_text,
4            '"1%" AND "%str%" AND SDATA (postal_code LIKE ''77539%'')') > 0
5 /
ADDRESS1_TEXT POSTAL_CODE
12 astrb        775391
1 row selected.
Execution Plan
Plan hash value: 3864510387
| Id | Operation                  | Name    | Rows | Bytes | Cost (%CPU)| Time    |
| 0 | SELECT STATEMENT            |          |    44 | 1320 |    13 (0)| 00:00:01 |
| 1 | TABLE ACCESS BY INDEX ROWID| ADDRESS |    44 | 1320 |    13 (0)| 00:00:01 |
|* 2 | DOMAIN INDEX              | TEST_IDX |      |      |    4 (0)| 00:00:01 |
Predicate Information (identified by operation id):
2 - access("CTXSYS"."CONTAINS"("ADDRESS1_TEXT",'"1%" AND "%str%" AND SDATA
              (postal_code LIKE ''77539%'')')>0)
Note
- dynamic statistics used: dynamic sampling (level=2)
SCOTT@orcl12c>

How to use Oracle text

I'm storing files in a blob field in a 9i database, sometimes I need to query using the details stored in the database about the file and sometimes I need to search the files to find matches with some text (like search engine), I was told that oracle text can help me accomplish this functionality , however I don't know if it supports arabic text and I don't know how to use it from my application developed in 9i.
Regards.

Friend by using these step you can easily use Oracle inter text media
j a h a n z e b
[email protected]
Oracle Developer
6th Floor, State Bank of Pakistan
I.I.Chundrigar Road, Karachi.
Please note that in SqlPlus you can use '?' in stead of $ORACLE_HOME, and this works on Unix and Windows so if you want to execute $ORACLE_HOME/rdbms/admin/catalog.sql you can simply use:
on Unix sql> @?/rdbms/admin/catalog.sql
on Windows sql> @?\rdbms\admin\catalog.sql
5.2.1 Explanation of installation steps
1. Connected to database as SYSDBA and create CTXSYS user:
Ctxsys user is created by calling following script:
@?/ctx/admin/dr0csys.sql <ctxsys> <system> <temp>
Where:
change_on_install - is the ctxsys user password
DRSYS - is the default tablespace for ctxsys
TEMP - is the temporary tablespace for ctxsys
This will create user CTXSYS and grants full privileges to CTXSYS in order to create and insert into result tables, execute callbacks, rewrite queries, and perform system cleanup. At this point CTXSYS will not own any objects.ss
2. Connected to database as CTXSYS and create all necessary objects
All necessary object are creates by calling following script:
connect CTXSYS/change_on_install
@?/ctx/admin/dr0inst <replace with $ORACLE_HOME>/ctx/lib/libctxx9.so;
Please not that you have to put full path to your ORACLE_HOME, for example home as paramter
On Solaris/Aix/Linux with $ORACLE_HOME of /u01/app/oracle/product/8.1.7
@?/ctx/admin/dr0inst.sql /u01/app/oracle/product/8.1.7/ctx/lib/libctxx8.so
On HP-UX with $ORACLE_HOME of /u01/app/oracle/product/8.1.7
@?/ctx/admin/dr0inst.sql /u01/app/oracle/product/8.1.7/ctx/lib/libctxx8.sl
Windows NT/2000 with D:\oracle\product\8.1.7
@?/ctx/admin/dr0inst.sql D:\oracle\product\8.1.7\bin\oractxx8.dll
This will installs all Oracle database objects required by the Oracle Text system. This includes:
a) Data dictionary tables, views, sequence, packages
b) Server management tables, views and packages
c) Dispatcher packages
d) Service queue objects
3) Install appropriate language-specific default preferences.
The next step is to install appropriate language-specific default preferences.When you use CREATE INDEX to create an index or ALTER INDEX to manage an index, you can optionally specify indexing preferences in the parameter string. There are seven preference classes:
- Lexer, defines the language being indexed. ( language specific )
- Wordlist, defines the expantion of stem and fuzzy queries. ( language specific )
- Stoplist, defines words and themes that are not be indexed. ( language specific )
- Datastore, defines document storage.
- Filter, defines standards for converion of documents to plaintext.
- Storage, defines the storage of the index tables.
- Section group, enables possibilities to define document sections.
There is script which creates language-specific default preferences for every language Oracle text supports in <ORACLE_HOME>/ctx/admin/defaults directory, such as English(US), Danish(DK), Dutch(NL), Finnish(SF), French(FR), German(DE), Italian(IT), Portuguese(PR), Spanish(ES), and Swedish(S). They are named in the form drdefXX.sql, where XX is the language code. To manually install US default preferences, for example, log into sqlplus as CTXSYS, and run 'drdefus.sql' as described below:
@?/ctx/admin/defaults/drdefus.sql
create user textuser identified by textuser
default tablespace users
temporary tablespace temp;
-- You must grant 'ctxapp' role to textuser
grant connect, resource, ctxapp to textuser;
connect textuser/textuser
drop table quick;
create table quick (
quick_id number
constraint quick_pk primary key,
text varchar2(80) );
insert into quick ( quick_id, text ) values (1,'The cat sat on the mat');
insert into quick ( quick_id, text ) values (2,'The quick brown fox jumps over the lazy dog' );
insert into quick ( quick_id, text ) values (3,'The dog barked like a dog');
commit;
create index quick_text on quick ( text )
indextype is ctxsys.context;
col text format a45
col s format 999
select text, score(42) s from quick
where contains ( text, 'dog', 42 ) > 0
order by s desc;

Strange result using Oracle Text

Hello, I am receiving a strange exception with this sql query
SELECT * FROM gob_attachment
WHERE CONTAINS (gob_a_document, 'java') > 0
It's giving me
ORA-29902: error in executing ODCIIndexStart() routine
ORA-20000: Oracle Text error:
ORA-00942: table or view does not exist
29902. 00000 - "error in executing ODCIIndexStart() routine"
*Cause: The execution of ODCIIndexStart routine caused an error.
*Action: Examine the error messages produced by the indextype code and
take appropriate action.
After some googling I've disovered that problem could be in index, but I looked at the table and index seems ok to me.
Create script for index is looking like this
CREATE INDEX FTSI_GOB_A_DOCUMENT ON GOB_ATTACHMENT (GOB_A_DOCUMENT) INDEXTYPE IS CTXSYS.CONTEXT;
Only thing which is strange to me is that when I look to Edit Table in Table properties in SQL Developer I can see that Operational Status of index is FAILED. Does anyone know what does it mean?Maybe DB rights?
Edited by: 918345 on 2.3.2012 1:40
Edited by: 918345 on 2.3.2012 1:44

No, I don't see any message related to this matter in there. I also tried to recreate the index and now the query is working, but it's not returning any results.
So I did this
drop index blob_index
create index blob_index on docs_mixedmedia(doc_contents) indextype is ctxsys.context
I've also discovered that we are storing unsupported datatype(DOCX), because it's supported from version 11 and we are running on 10g, could this lead to empty result of queries?

Oracle text performance with context search indexes

Search performance using context index.
We are intending to move our search engine to a new one based on Oracle Text, but we are meeting some
bad performance issues when using search.
Our application allows the user to search stored documents by name, object identifier and annotations(formerly set on objects).
For example, suppose I want to find a document named ImportSax2.c: according to user set parameters, our search engine format the following
search queries :
1) If the user explicitely ask for a search by document name, the query is the following one =>
     select objid FROM ADSOBJ WHERE CONTAINS( OBJFIELDURL , 'ImportSax2.c WITHIN objname' , 1 ) > 0;
2) If the user don't specify any extra parameters, the query is the following one =>
     select objid FROM ADSOBJ WHERE CONTAINS( OBJFIELDURL , 'ImportSax2.c' , 1 ) > 0;
Oracle text only need around 7 seconds to answer the second query, whereas it need around 50 seconds to give an answer for the first query.
Here is a part of the sql script used for creating the Oracle Text index on the column OBJFIELDURL
(this column stores a path to an xml file containing properties that have to be indexed for each object) :
begin
Ctx_Ddl.Create_Preference('wildcard_pref', 'BASIC_WORDLIST');
ctx_ddl.set_attribute('wildcard_pref', 'wildcard_maxterms', 200) ;
ctx_ddl.set_attribute('wildcard_pref','prefix_min_length',3);
ctx_ddl.set_attribute('wildcard_pref','prefix_max_length',6);
ctx_ddl.set_attribute('wildcard_pref','STEMMER','AUTO');
ctx_ddl.set_attribute('wildcard_pref','fuzzy_match','AUTO');
ctx_ddl.set_attribute('wildcard_pref','prefix_index','TRUE');
ctx_ddl.set_attribute('wildcard_pref','substring_index','TRUE');
end;
begin
ctx_ddl.create_preference('doc_lexer_perigee', 'BASIC_LEXER');
ctx_ddl.set_attribute('doc_lexer_perigee', 'printjoins', '_-');
ctx_ddl.set_attribute('doc_lexer_perigee', 'BASE_LETTER', 'YES');
ctx_ddl.set_attribute('doc_lexer_perigee','index_themes','yes');
ctx_ddl.create_preference('english_lexer','basic_lexer');
ctx_ddl.set_attribute('english_lexer','index_themes','yes');
ctx_ddl.set_attribute('english_lexer','theme_language','english');
ctx_ddl.set_attribute('english_lexer', 'printjoins', '_-');
ctx_ddl.set_attribute('english_lexer', 'BASE_LETTER', 'YES');
ctx_ddl.create_preference('german_lexer','basic_lexer');
ctx_ddl.set_attribute('german_lexer','composite','german');
ctx_ddl.set_attribute('german_lexer','alternate_spelling','GERMAN');
ctx_ddl.set_attribute('german_lexer','printjoins', '_-');
ctx_ddl.set_attribute('german_lexer', 'BASE_LETTER', 'YES');
ctx_ddl.set_attribute('german_lexer','NEW_GERMAN_SPELLING','YES');
ctx_ddl.set_attribute('german_lexer','OVERRIDE_BASE_LETTER','TRUE');
ctx_ddl.create_preference('japanese_lexer','JAPANESE_LEXER');
ctx_ddl.create_preference('global_lexer', 'multi_lexer');
ctx_ddl.add_sub_lexer('global_lexer','default','doc_lexer_perigee');
ctx_ddl.add_sub_lexer('global_lexer','german','german_lexer','ger');
ctx_ddl.add_sub_lexer('global_lexer','japanese','japanese_lexer','jpn');
ctx_ddl.add_sub_lexer('global_lexer','english','english_lexer','en');
end;
begin
     ctx_ddl.create_section_group('axmlgroup', 'AUTO_SECTION_GROUP');
end;
drop index ADSOBJ_XOBJFIELDURL force;
create index ADSOBJ_XOBJFIELDURL on ADSOBJ(OBJFIELDURL) indextype is ctxsys.context
parameters
('datastore ctxsys.file_datastore
filter ctxsys.inso_filter
sync (on commit)
lexer global_lexer
language column OBJFIELDURLLANG
charset column OBJFIELDURLCHARSET
format column OBJFIELDURLFORMAT
section group axmlgroup
Wordlist wildcard_pref
Oracle created a table named DR$ADSOBJ_XOBJFIELDURL$I which now contains around 25 millions records.
ADSOBJ is the table contaings information for our documents,OBJFIELDURL is the field that contains the path to the xml file containing
data to index. That file looks like this :
<?xml version="1.0" encoding="UTF-8" ?>
<fields>
<OBJNAME><![CDATA[NomLnk_177527o.jpgp]]></OBJNAME>
<OBJREM><![CDATA[Z_CARACT_141]]></OBJREM>
<OBJID>295926o.jpgp</OBJID>
</fields>
Can someone tell me how I can make that kind of request
"select objid FROM ADSOBJ WHERE CONTAINS( OBJFIELDURL , 'ImportSax2.c WITHIN objname' , 1 ) > 0;"
run faster ?

Below are the execution plan for both the 2 requests :
select objid FROM ADSOBJ WHERE CONTAINS( OBJFIELDURL , 'ImportSax2.c WITHIN objname' , 1 ) > 0
PLAN_TABLE_OUTPUT
|     Id     | Operation                              |Name                         |Rows     |Bytes     |Cost (%CPU)|
|     0     | SELECT STATEMENT                    |                              |1272     |119K     |     4     (0)     |
|     1      | TABLE ACCESS BY INDEX ROWID     |ADSOBJ      |1272     |119K     |     4     (0)     |
|     2      |     DOMAIN INDEX                    |ADSOBJ_XOBJFIELDURL     |          |          |     4     (0)     |
Note
- 'PLAN_TABLE' is old version
Executed in 2 seconds
select objid FROM ADSOBJ WHERE CONTAINS( OBJFIELDURL , 'ImportSax2.c' , 1 ) > 0
PLAN_TABLE_OUTPUT
|     Id     |Operation                              |Name                         |Rows     |Bytes     |Cost (%CPU)|
|     0     | SELECT STATEMENT                    |                              |1272     |119K     |     4     (0)     |
|     1     | TABLE ACCESS BY INDEX ROWID     |ADSOBJ                         |1272     |119K     |     4     (0)     |
|     2     | DOMAIN INDEX                    |ADSOBJ_XOBJFIELDURL     |          |          |     4     (0)     |
Sorry for the result formatting, I can't get it "easily" readable :(

Oracle Text 11g -Doubt

Hi ,
I am new to oracle text , i have a table which has a text data in one of the column which is been context indexed, now i want to find the frequently appearing words in that column, so i am using the ctx_doc.themes() procedure to achieve it.
I have created a result table 'ctx_themes' which has query_id,themes,weight columns which will get populated after executing the ctx_doc.themes() proc, but i am facing the below error after executing the ctx_doc.themes() proc, so please help me in fixing the issue.
Error starting at line 1 in command:
begin
ctx_doc.themes('text_data_index','e_id','CTX_THEMES',1,full_themes => FALSE,num_themes=>20);
end;
Error report:
ORA-20000: Oracle Text error:
DRG-11445: rowid value is invalid: e_id
ORA-06512: at "CTXSYS.DRUE", line 160
ORA-06512: at "CTXSYS.CTX_DOC", line 210
ORA-06512: at line 2
20000. 00000 - "%s"
*Cause: The stored procedure 'raise_application_error'
was called which causes this error to be generated.
*Action: Correct the problem as described in the error message or contact
the application administrator or DBA for more information.
Thank You.

This is meant well: I wouldn't bother posting Oracle Text questions here. It's a specialised area, and not a lot of standard, general DBAs will know much about it. If you click the 'Database' link above, however, and scroll down quite a long way, you'll find a specific Forum for such queries, called 'Text'. Some geniuses in there (Barbara, especially) are extremely knowledgeable on this sort of topic.

Find and replace Dreamweaver mx 2004 problem: not opening saved queries

Dreamweaver mx 2004 is not opening saved queries! I use find and replace often and uses to save code replacements to reuse
it. But now when I open the saved query I have 2 situations:
1) comes completely blank
2) or only shows truncated text or code in fields.
I opened the dwr file in text editor and seems to be fine, I mean information saved is there.
Tried recreating cache, or deleting caché, tried saving new or overwritting existant ones, tried saving into a completely different location,
tried in other site definition. Nothing seems to work...

Which FTP app did your predecessor use to upload files? If it's still on your work station, it should contain the log-in credentials.
You'll find a few utilities online for revealing passwords
http://www.rixler.com/?gclid=CJeUxd775LkCFWZk7AodyiAAaQ
Nancy O.

How do I get Oracle Text to index files on a file server?

I am new to Oracle (I'm a MS-SQL DBA looking for a Full-Text Search solution that is better than linking to a MS index server.)
So - Here's the objective:
I have Oracle Server(Express) installed on a Windows server.
I would like for Oracle to build a Full-Text Catalog of the files on a separate file server based on file paths in a table in the database.
(No desire to store terabytes of images and documents inside the database)
I can get Oracle text up and running, using the URL_Datastore:
CREATE TABLE files (id NUMBER PRIMARY KEY, issue_id NUMBER, path VARCHAR(255) UNIQUE, ot_format VARCHAR(6), ot_version VARCHAR(10));
The Compaq server is a remote windows server on my local workgroup, so the fully qualified path is just "compaq" and the URL is valid:
INSERT INTO files VALUES (9,9,'file://Compaq/FTQ/00000003.pdf',NULL,NULL);
INSERT INTO files VALUES (13,13,'file://Compaq/FTQ/01.txt',NULL,NULL);
CREATE INDEX file_index ON files(path) INDEXTYPE IS ctxsys.context
PARAMETERS ('datastore ctxsys.URL_DATASTORE format column ot_format');
but when I enter:
Select * from CTX_User_Index_errors, I see the following errors:
DRG-11609: URL store: unable to open local file specified by file://Compaq/FTQ/00000003.pdf
DRG-11609: URL store: unable to open local file specified by file://Compaq/FTQ/01.txt
Did I miss something?
Do I need to install anything on the file server?
I would like to convince my company that Oracle can be much quicker than Microsoft's Indexing Service because it can avoid joining two large result sets (one result set from Full_text (indexing service) and one for specific data contained in fields in the MS-SQL database.) Full Text Searches commonly take 40 - 60 seconds where there are 1.5 million multi-page PDF files for a particular set that I sample search on. Without this massive join, I believe I can get the search to run in under 10 seconds.

Thank you!
File_Datastore worked fine.
I was staying away from File_Datastore because the information I gathered from googling suggested that file_datastore would only work locally.
Now I just have to get Oracle to pull data out of tables in a MS-SQL database on the local network (don't have a clue yet), and then have it index compiled file paths.
Then MS-SQL can query Oracle with index and full-text criteria and Oracle can send back a result set
It may sound like a bad way of performing Full-Text Queries, but anything will be better than the way things are currently running. We are currently performing Full Text Searches on a table that is rebuilt nightly, so the table containing millions of file paths is not live..
It would be so much better if we just migrated to Oracle, but we currently do not have the resources.

Upgrading Oracle Text - Post upgrade step 10.2 to 11.2

I already upgraded my 10.2.0.4 database to 11.2.0.1 and have to do post upgrade steps. In step 39 of Manual guideline (837570.1) is not clear for me. If some one can explain further would be appriciated. When i check my source ORACLE_HOME/ctx/admin/ctxf102.txt or ctxf102.sql
Step 39
Upgrading Oracle Text
Copy the following files from the previous Oracle home to the new Oracle home:
* Stemming user-dictionary files
* User-modified KOREAN_MORPH_LEXER dictionary files
* USER_FILTER executables
To obtain a list of the above files, use:
$ORACLE_HOME/ctx/admin/ctxf<version>.txt
$ORACLE_HOME/ctx/admin/ctxf<version>.sql
where version is 920,101,102
For instance, if upgrading from 10.2.0
*1. For dictionary files check*
*$ORACLE_HOME/ctx/admin/ctxf102.txt*
*2. Execute the script as database user SYS,SYSTEM, or CTXSYS*
*$ORACLE_HOME/ctx/admin/ctxf102.sql*
If your Oracle Text index uses KOREAN_LEXER which was deprecated in Oracle 9i and desupported in Oracle 10g Release 2, see below Note for further information on manual migration from KOREAN_LEXER to KOREAN_MORPH_LEXER.
Note 300172.1 Obsolescence of KOREAN_LEXER Lexer Type

Hi Srini
Thank you very much. now i got it.
Oracle asked me to identify the CTXCAT indexes with KOREAN_LEXER execute the following query as user CTXSYS: if nothing return then i can skip this step.
SELECT idx_name
FROM ctxsys.ctx_indexes
WHERE idx_type = 'CTXCAT'
AND idx_name IN
(SELECT ixo_index_name
FROM ctxsys.ctx_index_objects
WHERE ixo_class = 'LEXER'
AND ixo_object = 'KOREAN_MORPH_LEXER ');
SELECT isl_index_owner,isl_index_name,isl_language
FROM CTXSYS.ctx_index_sub_lexers
WHERE isl_object = 'KOREAN_MORPH_LEXER';

Issues using Oracle Text conditions

Hi all,
I'm facing an issue executing a query on a VIEW using Oracle Text Indexes.
The DB version I'm using is "Enterprise 9.2.0.5".
TEST_VIEW is an sql-view that has a query on several tables where one of them has two Oracle Text indexes, one on field FIELD2 and another on FIELD3
executing this query I get 10 rows:
select *
from TEST_VIEW
where FIELD1 = 1001 -- regular condition
and (contains(FIELD2, 'Blitz') > 0 ) -- Oracle text condition
But if I add another condition on an existent Oracle Text Index, I'll get only 1 row:
select *
from TEST_VIEW
where FIELD1 = 1001
where (contains(FIELD2, 'Blitz') > 0 OR contains(FIELD3, 'Blitz') > 0)
As you can see the third condition was added using a logical OR, so I should get at least 10 rows ...
Can anyone help me ?
ThaNks in advance.
Eduardo.

Eduardo,
Without a full test case, it is hard to see if there is something wrong or not. I did the following, and all worked fine on my 10g instance. I had to assume some things, but I at least think I have the basic gist of your inquiry in this example. Run it/change it to match your situation, and post back when you can.
Thanks,
Ron
CREATE TABLE Z_TEST1 (
FIELD1 VARCHAR2(30));
INSERT INTO Z_TEST1
VALUES ('QUICK');
INSERT INTO Z_TEST1
VALUES ('BROWN');
INSERT INTO Z_TEST1
VALUES ('FOX');
INSERT INTO Z_TEST1
VALUES ('QUICK');
INSERT INTO Z_TEST1
VALUES ('BROWN');
INSERT INTO Z_TEST1
VALUES ('FOX');
CREATE TABLE Z_TEST2 (
FIELD2 VARCHAR2(30));
INSERT INTO Z_TEST2
VALUES ('JUMPED');
INSERT INTO Z_TEST2
VALUES ('OVER');
INSERT INTO Z_TEST2
VALUES ('LAZY');
INSERT INTO Z_TEST2
VALUES ('DOG');
INSERT INTO Z_TEST2
VALUES ('QUICK');
INSERT INTO Z_TEST2
VALUES ('BROWN');
INSERT INTO Z_TEST2
VALUES ('FOX');
commit;
CREATE VIEW TEST_VIEW
AS
SELECT Z_TEST1.FIELD1 AS "FIELD1", Z_TEST2.FIELD2 AS "FIELD2"
FROM Z_TEST1, Z_TEST2;
CREATE INDEX Z_TEST1_IDX ON Z_TEST1(FIELD1)
INDEXTYPE IS CTXSYS.CONTEXT;
CREATE INDEX Z_TEST2_IDX ON Z_TEST2(FIELD2)
INDEXTYPE IS CTXSYS.CONTEXT;
select *
from TEST_VIEW
where CONTAINS(FIELD1, 'FOX') > 0;
14 rows
select *
from TEST_VIEW
where (CONTAINS(FIELD1, 'FOX') > 0 OR CONTAINS(FIELD2, 'FOX') > 0);
18 rows

Index rules in oracle text and query using matches

Dear All,
I would like to ask about rules and matches function in oracle text.
I followed an example in oracle text application developer's guide.
I have a rule table like this :
1 oracle
2 larry or ellison
3 oracle and text
4 market share
then, I create an index to that table. This is needed for calling matches function. Here is the syntax :
create index queryx on queries(query_string)
indextype is ctxsys.ctxrule;
then, I noticed that the result on DR$QUERYX$I table as follows :
LARRY 0 2 2 1 (BLOB)
MARKET 0 4 4 1 (BLOB) {MARKET} {SHARE}
ORACLE 0 1 1 1 (BLOB)
ORACLE 0 3 3 1 (BLOB) {TEXT}
ELLISON 0 2 2 1 (BLOB)
What I want to ask is why doesn't the words 'share' and 'text' appear in the DR$QUERYX$ table?
When we use matches function, it then search on the index result and consequently it wion't find the 'share' word. so when for example I do query like this :
select query_id from queries where matches(query_string,' It only share ten percent of all products sold')>0
it will give 0 result since the no word in ' It only share ten percent of all products sold' was in index table. But actually it could possibly be categorized as the 4 category which rules is 'market share'
I tried this in a larger set of data and get same result.
Here is my generated rules from my document collection :
1 {REQUIREMENTS} & {ELICITATION}
1 {REQUIREMENTS} ~ {ELICITATION} & {ACTOR}
1 {REQUIREMENTS} ~ {ELICITATION} ~ {ACTOR} & {FURPS}
1 {REQUIREMENTS} ~ {ELICITATION} ~ {ACTOR} ~ {FURPS} ~ {OUTLINE}
1 {REQUIREMENTS} ~ {ELICITATION} ~ {ACTOR} ~ {FURPS} ~ {OUTLINE} & {PROC}
1 {REQUIREMENTS} ~ {ELICITATION} ~ {ACTOR} ~ {FURPS} ~ {OUTLINE} ~ {PROC} & {SPEED}
1 {REQUIREMENTS} ~ {ELICITATION} ~ {ACTOR} ~ {FURPS} ~ {OUTLINE} ~ {PROC} ~ {SPEED} & {DOCUME}
1 {REQUIREMENTS} ~ {ELICITATION} ~ {ACTOR} ~ {FURPS} ~ {OUTLINE} ~ {PROC} ~ {SPEED} ~ {DOCUME} & {PLACED}
1 {REQUIREMENTS} ~ {ELICITATION} ~ {ACTOR} ~ {FURPS} ~ {OUTLINE} ~ {PROC} ~ {SPEED} ~ {DOCUME} ~ {PLACED} & {UNNECESSARY}
1 {REQUIREMENTS} ~ {ELICITATION} ~ {ACTOR} ~ {FURPS} ~ {OUTLINE} ~ {PROC} ~ {SPEED} ~ {DOCUME} ~ {PLACED} ~ {UNNECESSARY} & {MISUSE}
1 {INTERPRETATION} ~ {REQUIREMENTS}
2 {DESIGN} & {REPRESENTATION}
2 {DESIGN} ~ {REPRESENTATION} & {MAY} & {FOUNDATI} & {OCTOBER}
2 {DESIGN} ~ {REPRESENTATION} & {MAY} & {FOUNDATI} ~ {OCTOBER} & {PROCEDURAL}
2 {DESIGN} ~ {REPRESENTATION} & {MAY} & {FOUNDATI} ~ {OCTOBER} ~ {PROCEDURAL} & {STRICT}
2 {DESIGN} ~ {REPRESENTATION} & {MAY} & {FOUNDATI} ~ {OCTOBER} ~ {PROCEDURAL} ~ {STRICT} & {GRASP}
2 {DESIGN} ~ {REPRESENTATION} & {MAY} & {FOUNDATI} ~ {OCTOBER} ~ {PROCEDURAL} ~ {STRICT} ~ {GRASP} & {MANY} & {LAYER}
2 {DESIGN} ~ {REPRESENTATION} ~ {MAY}
3 {PM} & {TESTING} & {ATTRIBUTI}
And this is the index table result with ctxrule :
(only the token_text column shown)
PM
DESIGN
DESIGN
DESIGN
DESIGN
DESIGN
DESIGN
DESIGN
REQUIREMENTS
REQUIREMENTS
REQUIREMENTS
REQUIREMENTS
REQUIREMENTS
REQUIREMENTS
REQUIREMENTS
REQUIREMENTS
REQUIREMENTS
REQUIREMENTS
INTERPRETATION
so when I try to classify a document with the word ouline inside it, it should produce category 1 (based on the rules) but since there are no word 'outline' in index tabel, the matches will return 0 means that the document is not classifiedto any category. I don't understand why it happen. Anybody knows about this? I would really appreciate any help.
Thank you very much.

Hm, I see. It do make sense. so nice to know.
But then in the second example I gift where I used larger table, as shown below :
Here is my generated rules from my document collection :
1 {REQUIREMENTS} & {ELICITATION}
1 {REQUIREMENTS} ~ {ELICITATION} & {ACTOR}
1 {REQUIREMENTS} ~ {ELICITATION} ~ {ACTOR} & {FURPS}
1 {REQUIREMENTS} ~ {ELICITATION} ~ {ACTOR} ~ {FURPS} ~ {OUTLINE}
1 {REQUIREMENTS} ~ {ELICITATION} ~ {ACTOR} ~ {FURPS} ~ {OUTLINE} & {PROC}
1 {REQUIREMENTS} ~ {ELICITATION} ~ {ACTOR} ~ {FURPS} ~ {OUTLINE} ~ {PROC} & {SPEED}
1 {REQUIREMENTS} ~ {ELICITATION} ~ {ACTOR} ~ {FURPS} ~ {OUTLINE} ~ {PROC} ~ {SPEED} & {DOCUME}
1 {INTERPRETATION} ~ {REQUIREMENTS}
2 {DESIGN} & {REPRESENTATION}
2 {DESIGN} ~ {REPRESENTATION} & {MAY} & {FOUNDATI} & {OCTOBER}
2 {DESIGN} ~ {REPRESENTATION} & {MAY} & {FOUNDATI} ~ {OCTOBER} & {PROCEDURAL}
2 {DESIGN} ~ {REPRESENTATION} & {MAY} & {FOUNDATI} ~ {OCTOBER} ~ {PROCEDURAL} & {STRICT}
2 {DESIGN} ~ {REPRESENTATION} ~ {MAY}
3 {PM} & {TESTING} & {ATTRIBUTI}
As far as I know, the sign ' ~ ' means 'OR' and '&' means 'and' . So based on the 4th line in my table :
1 {REQUIREMENTS} ~ {ELICITATION} ~ {ACTOR} ~ {FURPS} ~ {OUTLINE}
it can be concluded that if any of the words stated there been queried, so the category '1' will appear as a result. But then before we can use 'matches' to query it, we need ti create index for the rules table . I did it and the result were :
(only the token_text column shown)
PM
DESIGN
DESIGN
DESIGN
DESIGN
DESIGN
DESIGN
DESIGN
REQUIREMENTS
REQUIREMENTS
REQUIREMENTS
REQUIREMENTS
REQUIREMENTS
REQUIREMENTS
REQUIREMENTS
REQUIREMENTS
REQUIREMENTS
REQUIREMENTS
INTERPRETATION
there were no words other than PM, DESIGN< REQUIREMENTS and INTERPRETATION. Why the words REQUIREMENTS, ELICITATION, ACTOR, FURPS, OUTLINE don't appear in the index result?

Bad Query Performance in Oracle Text

Hello everyone, I have the following problem:
I have a table, TABLE_A from now on, a table of more or less 1,000.000 rows, with a CONTEXT index, using FILE_DATASTORE, CTXSYS.DEFAULT_STORAGE, CTXSYS.NULL_FILTER, CTXSYS.BASIC_LEXER and querying the index in the following way:
SELECT /*+FIRST_ROWS*/ A.ID, B.ID2, SCORE(1) FROM TABLE_A A, TABLE_B WHERE A.ID = B.ID AND CONTAINS(A.PATH, '<SOME KW>', 1) > 0 ORDER BY SCORE(1) DESC
where TABLE_B has another 1,000.000 rows.
The problem is that the query response time is much higher after some time of inactivity regarding those tables. How can I avoid this behavior?. The fact is that those inactivity times (not more than 20min) are core to my application, so I always get long long response times for my queries.
Is there any cache or cache time parameter that affects this behavior? I have checked the Oracle Text documentation without finding anything about that...
More data: I am using Oracle 9.2.0.1, but I have tested with the latest patches an the behavior is the same...
Thank you very much in advance.

Pablo,
This appears to be a generic database or OS issue, not a Text specific issue. It really depends on what your application is doing.
If your application is doing some other database activity such as queries or DMLs on other non-text tables, chances are Oracle Text related data blocks are being aged out of cache. You can either increase the db_cache_size init
parmater or try to keep the text tables and index tables blocks in cache using ALTER TABLE commands.
If your app is doing NON-database activity, then chances are your application is taking up much of the machine's physical memory such that OS is swapping ORACLE out of the memory. In which case, you may want to consider to add more memory to the machine or have ORACLE run on a separate machine by itself.

Error When Creating Oracle Text index using Lexer Keyword

Hi All,
I am getting following error when i creating oracle text index using lexer & stoplist keyword.
Pls Help me if any body know.
Thanks in Advance.
Error starting at line 1 in command:
CREATE INDEX TXT_INX_TEXT_SEARCH ON TEXT_SEARCH (BFILE_DOC)
Post INDEXTYPE IS "CTXSYS"."CONTEXT" LOCAL (
PARTITION "BEFORE_2007" PARAMETERS ('LEXER dd_lexer STOPLIST dd_stoplist SYNC (ON COMMIT)') ,
PARTITION "Q1_2007" PARAMETERS ('LEXER dd_lexer STOPLIST dd_stoplist SYNC (ON COMMIT)'),
PARTITION "Q2_2007" PARAMETERS ('LEXER dd_lexer STOPLIST dd_stoplist SYNC (ON COMMIT)'),
PARTITION "Q3_2007" PARAMETERS ('LEXER dd_lexer STOPLIST dd_stoplist SYNC (ON COMMIT)'),
PARTITION "Q4_2007" PARAMETERS ('LEXER dd_lexer STOPLIST dd_stoplist SYNC (ON COMMIT)'),
PARTITION "Q1_2008" PARAMETERS ('LEXER dd_lexer STOPLIST dd_stoplist SYNC (ON COMMIT)'),
PARTITION "Q2_2008" PARAMETERS ('LEXER dd_lexer STOPLIST dd_stoplist SYNC (ON COMMIT)'),
PARTITION "Q3_2008" PARAMETERS ('LEXER dd_lexer STOPLIST dd_stoplist SYNC (ON COMMIT)'),
PARTITION "Q4_2008" PARAMETERS ('LEXER dd_lexer STOPLIST dd_stoplist SYNC (ON COMMIT)'),
PARTITION "Q1_2009" PARAMETERS ('LEXER dd_lexer STOPLIST dd_stoplist SYNC (ON COMMIT)'),
PARTITION "Q2_2009" PARAMETERS ('LEXER dd_lexer STOPLIST dd_stoplist SYNC (ON COMMIT)'),
PARTITION "Q3_2009" PARAMETERS ('LEXER dd_lexer STOPLIST dd_stoplist SYNC (ON COMMIT)'),
PARTITION "Q4_2009" PARAMETERS ('LEXER dd_lexer STOPLIST dd_stoplist SYNC (ON COMMIT)'),
PARTITION "THE_REST" PARAMETERS ('LEXER dd_lexer STOPLIST dd_stoplist SYNC (ON COMMIT)')
Error at Command Line:1 Column:13
Error report:
SQL Error: ORA-29855: error occurred in the execution of ODCIINDEXCREATE routine
ORA-20000: Oracle Text error:
DRG-11000: invalid keyword LEXER
ORA-06512: at "CTXSYS.DRUE", line 160
ORA-06512: at "CTXSYS.TEXTINDEXMETHODS", line 365
29855. 00000 - "error occurred in the execution of ODCIINDEXCREATE routine"
*Cause: Failed to successfully execute the ODCIIndexCreate routine.
*Action: Check to see if the routine has been coded correctly.
Regards,
Jack R.

Hi,
it works if you put an extra PARAMETERS clause at the end so the creation looks like:
CREATE INDEX TXT_INX_TEXT_SEARCH ON TEXT_SEARCH (BFILE_DOC)
INDEXTYPE IS "CTXSYS"."CONTEXT" LOCAL (
PARTITION "BEFORE_2007" PARAMETERS ('LEXER dd_lexer STOPLIST dd_stoplist SYNC (ON COMMIT)') ,
PARTITION "Q1_2007" PARAMETERS ('LEXER dd_lexer STOPLIST dd_stoplist SYNC (ON COMMIT)'),
PARTITION "Q2_2007" PARAMETERS ('LEXER dd_lexer STOPLIST dd_stoplist SYNC (ON COMMIT)'),
PARTITION "Q3_2007" PARAMETERS ('LEXER dd_lexer STOPLIST dd_stoplist SYNC (ON COMMIT)'),
PARTITION "Q4_2007" PARAMETERS ('LEXER dd_lexer STOPLIST dd_stoplist SYNC (ON COMMIT)'),
PARTITION "Q1_2008" PARAMETERS ('LEXER dd_lexer STOPLIST dd_stoplist SYNC (ON COMMIT)'),
PARTITION "Q2_2008" PARAMETERS ('LEXER dd_lexer STOPLIST dd_stoplist SYNC (ON COMMIT)'),
PARTITION "Q3_2008" PARAMETERS ('LEXER dd_lexer STOPLIST dd_stoplist SYNC (ON COMMIT)'),
PARTITION "Q4_2008" PARAMETERS ('LEXER dd_lexer STOPLIST dd_stoplist SYNC (ON COMMIT)'),
PARTITION "Q1_2009" PARAMETERS ('LEXER dd_lexer STOPLIST dd_stoplist SYNC (ON COMMIT)'),
PARTITION "Q2_2009" PARAMETERS ('LEXER dd_lexer STOPLIST dd_stoplist SYNC (ON COMMIT)'),
PARTITION "Q3_2009" PARAMETERS ('LEXER dd_lexer STOPLIST dd_stoplist SYNC (ON COMMIT)'),
PARTITION "Q4_2009" PARAMETERS ('LEXER dd_lexer STOPLIST dd_stoplist SYNC (ON COMMIT)'),
PARTITION "THE_REST" PARAMETERS ('LEXER dd_lexer STOPLIST dd_stoplist SYNC (ON COMMIT)')
PARAMETERS ('LEXER dd_lexer STOPLIST dd_stoplist SYNC (ON COMMIT)') <== Added
Hope this helps
Herald ten Dam

Saving queries executed in Oracle Text

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