Character ~(ascii(126)) in Intermedia Text

How can I search character '~' by a ConText Index or some string that contains it?
The error is:
select homepage from tabclients where contains(homepage,'~ee')>0
ERROR en lmnea 1:
ORA-29902: error in executing ODCIIndexStart() routine
ORA-20000: ConText error:
DRG-50901: text query parser syntax error on line 1, column 1
It is with Oracle 8.1.5 in Windows NT.
Thanks in advance.
null

Similar Messages

Intermedia text search error for file system

I would like to search a text from a file. store in the file system. I have done the following procedures but when i create i get error.
BEGIN
CTX_DDL.CREATE_PREFERENCE('search_docroot_pref','FILE_DATASTORE');
CTX_DDL.SET_ATTRIBUTE('search_docroot_pref','path','c:/temp/abc');
END;
Now when i create INDEX with following syntex
CREATE INDEX mysearch_ind ON mytable(mycolumn) INDEXTYPE IS
CTXSYS.context parameters('datastore search_docroot_pref');
I get the following errors.
ERROR at line 1:
ORA-29855: error occurred in the execution of ODCIINDEXCREATE routine
ORA-20000: interMedia Text error:
DRG-50704: Net8 listener is not running or cannot start external procedures
ORA-28575: unable to open RPC connection to external procedure agent
ORA-06512: at "CTXSYS.DRUE", line 126
ORA-06512: at "CTXSYS.TEXTINDEXMETHODS", line 54
ORA-06512: at line 1
Can any body tell me where i am wrong.
Thanks,

Hi
I was aslo facing same problem.My net8 connection and listner is aslo ok. but getting same errors.
Raju

Strange: Conditional Error in Intermedia Text Index Creation

Hi All,
I am facing a strange error while creating the Intermedia Text index on 8.1.6 release for NT 4.0.
I have one database instance installed on the server. When i connect to Oracle through SQL plus as: connect username/password;
The index creation works fine!
But, if i connect using: username/password@servicename;
The index creation does not work!
The following error occurs.
ORA-29855: error occurred in the execution of ODCIINDEXCREATE routine
ORA-20000:intermedia Text error:
ORA-50704:Net8 listener is not running or cannot start external procedures
ORA-28575:unable to open RPC connection to external procedure agent
ORA-12154:TNS:could not resolve service name
ORA-06512:at "CTXSYS.DRUE", line 126
ORA-06512: at "CTXSYS.TEXTINDEXMETHODS", line 54
ORA-06512:at line 1
Could anyone please help as to why it works without when connected without the service name but not otherwise?
Thanking you in advance!
Thanks and Regards
Anurag Agarwal

Hi All,
I am facing a strange error while creating the Intermedia Text index on 8.1.6 release for NT 4.0.
I have one database instance installed on the server. When i connect to Oracle through SQL plus as: connect username/password;
The index creation works fine!
But, if i connect using: username/password@servicename;
The index creation does not work!
The following error occurs.
ORA-29855: error occurred in the execution of ODCIINDEXCREATE routine
ORA-20000:intermedia Text error:
ORA-50704:Net8 listener is not running or cannot start external procedures
ORA-28575:unable to open RPC connection to external procedure agent
ORA-12154:TNS:could not resolve service name
ORA-06512:at "CTXSYS.DRUE", line 126
ORA-06512: at "CTXSYS.TEXTINDEXMETHODS", line 54
ORA-06512:at line 1
Could anyone please help as to why it works without when connected without the service name but not otherwise?
Thanking you in advance!
Thanks and Regards
Anurag Agarwal

Creating intermedia text index error

Hello. I tried creating an index using the below command
create index mydocs_text_index on
mydocs(thefile) indextype is ctxsys.context;
However, I received some error message as follows:
ERROR at line 1:
ORA-29855: error occurred in the execution of ODCIINDEXCREATE routine
ORA-20000: file not found
DRG-50704: file not found
ORA-28575: unable to open RPC connection to external procedure agent
ORA-06512: at "CTXSYS.DRUE", line 126
ORA-06512: at "CTXSYS.TEXTINDEXMETHODS", line 54
ORA-06512: at line 1
What do you think is wrong?
Thank you

Is the listener up and running?
Installation
1.What are the steps to install interMedia Text manually, AFTER installing the code via the
installer?
A.
cd $ORACLE_HOME/ctx/admin
B. as SYS:
@dr0csys.sql ctxsys system temp
where ctxsys is the ctxsys password
system is the default tablespace for ctxsys
temp is the temporary tablespace for ctxsys
C. as CTXSYS:
@dr0inst.sql
/oracle/db/dev118/ctx/lib/libctxx8.so
(on Solaris)
where /oracle/db/dev118 is $ORACLE_HOME
D. as CTXSYS:
@defaults/drdefus.sql
Note: this is assuming you want U.S. to be your language default, otherwise run the
corresponding drdef for your language.
2.What are the steps to install interMedia Text manually, with a Net8 Configuration?
A. Configure an IPC listener address.
For example, change:
LISTENER =
(ADDRESS_LIST=
(ADDRESS=
(PROTOCOL=tcp) (HOST=ap118sun.us.oracle.com) (PORT=1521)
to:
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC) (KEY = EXTPROC0))
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP) (HOST = ap118sun) (PORT
=1521))
This shows the full LISTENER definition in your listener.ora. Note: EXTPROC0 ends in a
zero.
B. Add a system identifier (SID) name of PLSExtProc and a program name of EXTPROC in the server's LISTENER.ORA file.
For example, in the SID_LIST_LISTENER definition, insert:
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC = ...
(SID_DESC =
(SID_NAME=PLSExtProc)(ORACLE_HOME=/oracle/db/dev118)
(PROGRAM=extproc)
C. Add a net service name description entry for EXTPROC0 in the server's tnsnames.ora
file, using SID rather than SERVICE_NAME in the CONNECT_DATA section.
For example, add this to the end of tnsnames.ora:
extproc_connection_data =
(DESCRIPTION=
(ADDRESS_LIST =
(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC0))
(CONNECT_DATA=
(SID=PLSExtProc)
(PRESENTATION = RO)
This entry should be added exactly as you see it here (do NOT substitute your SID
anywhere, do NOT change the case of any text). Note: EXTPROC0 ends in a zero, RO
ends in an Oh
1.How do I check my interMedia Text installation and setup?
A.
lsnrct1status
should give you the following:
LSNRCTL for Solaris: Version
8.1.5.0.0 - Production on 31-MAR-99 18:57:49
(c) Copyright 1998 Oracle Corporation. All rights reserved.
Connecting to
(DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC0)))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for Solaris: Version 8.1.5.0.0 - Production
Start Date 30-MAR-99 15:53:06
Uptime 1 days 3 hr. 4 min. 42 sec
Trace Level off
Security OFF
SNMP OFF
Listener Parameter File
/private7/oracle/oracle_home/network/admin/listener.ora
Listener Log File
/private7/oracle/oracle_home/network/log/listener.log
Services Summary...
PLSExtProc has 1 service handler(s)
oco815 has 3 service handler(s)
The command completed successfully
The important information to understand here is the service handler for PLSExtProc.
B. Create a user/table/index/query thus:
As SYS or SYSTEM:
create user ctxtest identified by ctxtest ;
grant connect, resource, ctxapp to ctxtest ;
Do any other grants, quotas, tablespace etc. for the new user. As CTXTEST:
create table quick
quick_id number primary key,
text varchar(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 jumped over the lazy dog' );
commit;
create index quick_text on quick ( text )
indextype is ctxsys.context;
At this point, if your Net8 setup is NOT correct you will get:
create index quick_text on quick ( text )
ERROR at line 1:
ORA-29855: error occurred in the execution of ODCIINDEXCREATE routine
ORA-20000: ConText error:
DRG-50704: Net8 listener is not running or cannot start external procedures
ORA-28575: unable to open RPC connection to external procedure agent
ORA-06512: at "CTXSYS.DRUE", line 122
ORA-06512: at "CTXSYS.TEXTINDEXMETHODS", line 34
ORA-06512: at line 1
If everything is OK, you will get:
Index created.
Now try some queries:
SQL> select quick_id from quick where contains(text, 'cat')>0;
QUICK_ID
1
SQL> select quick_id from quick where contains(text, 'fox')>0;
QUICK_ID
2
Congratulations !! You now have a successful interMedia Text V8.1 installation.
null

Intermedia text problem setup

Hi,
I've got a problem with creating a certain index. I have created a table an filled it with data:
create table ctxsys.quick
quick_id number
constraint quick_pk primary key,
text varchar(80)
I tried to create and index but I am getting the following "group of errors":
create index quick_text on ctxsys.quick ( text )
indextype is ctxsys.context;
ORA-29855: error occurred in the execution of ODCIINDEXCREATE routine
ORA-20000: interMedia Text error:
DRG-11422 linguistic initialization failed
DRG-00100: internal error, arguments : [52100],[drxs.c],[553],[gxtopen],[1]
DRG-11208: ORACLE_HOME is not set.
ORA-06512: at "CTXSYS.DRUE", line 126
ORA-06512: at "CTXSYS.TEXTINDEXMETHODS", line 78
ORA-06512: at line 1
I have also defined the enviromental variables:
LD_LIBRARY_PATH = C:\oracle\ora81\ctx\lib
and add to PATH = C:\oracle\ora81\ctx\lib
I am using win2k with oracle personal 8.1.7.
Any ideas what might have been setup wrongly?!
Thanks,
Kostas.

Well,
By using:
PARAMETERS ('NOPOPULATE')
was the only way so far, that I managed to create an indexer.
An indexer creation with different parameters would create the following errors:
ORA-29855: error occurred in the execution of ODCIINDEXCREATE routine
ORA-20000: interMedia Text error:
DRG-11422 linguistic initialization failed
DRG-00100: internal error, arguments : [52100],[drxs.c],[553],[gxtopen],[1]
DRG-11208: ORACLE_HOME is not set.
ORA-06512: at "CTXSYS.DRUE", line 126
ORA-06512: at "CTXSYS.TEXTINDEXMETHODS", line 78
ORA-06512: at line 1
Looking ways to overcome this problem...
Regards,
Kostas.

Intermedia text index creation error

My intermedia text was working fine, but now when create one index, it failed and it gave me the following error message:
ERROR at line 1:
ORA-29855: error occurred in the execution of ODCIINDEXCREATE routine
ORA-20000: ConText error:
ORA-06520: PL/SQL: Error loading external library
ORA-06522: ld.so.1: extprocPLSExtProc: fatal: libskgxp8.so: open failed: No such file or directory
ORA-06512: at "CTXSYS.DRUE", line 122
ORA-06512: at "CTXSYS.TEXTINDEXMETHODS", line 34
ORA-06512: at line 1
The listener itself is fine, is it because some library need to be re-created?
null

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Alexander Bogomolov ([email protected]):
I've installed Intermedia text. During sample index creation i've get following error messages:
ORA-06520: PL/SQL: Error loading external library
ORA-06522: Unable to load DLL
ORA-06512: at "CTXSYS.DRUE", line 126
ORA-06512: at "CTXSYS.TEXTINDEXMETHODS", line 54
ORA-06512: at line 1...
seems to be incorrect NET8 settings. How can I solve this problem?
thanks.
Sorry for bad English. regards!<HR></BLOCKQUOTE>
*** check your listener.ora file
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = oracle_home)
(PROGRAM = extproc)
(SID_DESC =
(GLOBAL_DBNAME = global dbname)
(ORACLE_HOME = oracle_home)
(SID_NAME = sidname)
for the correct location of extproc
null

How do I use XSLT & XML is stored in InterMedia Text.....

I use interMedia Text to store XML document. How do I use the XSLT Processor API to transform the data which is searched by XML SQL Utility??
//***Source Code
public Document xmlquery(String tabName,String xslfilename)
Document xmlDocToReturn = null;
String xmlString;
try
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
//initiate a JDBC connection
// initialize the OracleXMLQuery
OracleXMLQuery qry = new OracleXMLQuery(conn,"select XML_TEXT from bookstore where contains (xml_text,'John WITHIN authorsec')>0");
// structure the generated XML document
qry.setMaxRows(2);
// set the maximum number of rows to be returned
// get the XML document in string format
xmlString = qry.getXMLString();
// print out the XML document
System.out.println(" OUTPUT IS:\n"+xmlString);
// get the XML document in string format
xmlDocToReturn = qry.getXMLDOM();
conn.close();
catch (SQLException e) {
return xmlDocToReturn;
xml = (XMLDocument)query.xmlquery(args[1],args[0]);
// Instantiate the stylesheet
XSLStylesheet xsl = new XSLStylesheet(xsldoc, xslURL);
XSLProcessor processor = new XSLProcessor();
// Display any warnings that may occur
processor.showWarnings(true);
processor.setErrorStream(System.err);
// Process XSL
DocumentFragment result = processor.processXSL(xsl, xml);
Thank you.
null

Your problem here is that when you store an XML document in a CLOB and search it using intermedia, when you do a query like:
SELECT xml_text
FROM bookstore
WHERE CONTAINS(xml_text,'John WITHIN authorsec')>0
The output from the XML SQL Utility using getXMLDOM() looks like this:<ROWSET>
<ROW>
<XML_TEXT><![CDATA[
<bookstuff>
<authorsec>
<name>Steve</name>
</authorsec>
etc.
</bookstuff>
]]>
</XML_TEXT>
</ROW>
</ROWSET>with the document as a single text value (it's actually just a text node, not a CDATA node) but the above illustrates conceptually that the whole XML document is one big text node.
To transform this you'll need to parse that XML text into an XML document in memory by passing constructing a StringReader() on the text value and parsing that reader.
null

InterMedia Text with USER_DATASTORE and ORA-03113

Hi,
I have problems using Oracle's InterMedia Text-index with a
USER_DATASTORE. I'm using Oracle 8.1.7 on Windows NT 4.0.
What I try to do is to create a context-index on multiple columns
of multiple tables. I created a table containing the original
tablenames and primary keys plus a char(1)-column to index, a
user_datastore, a procedure in a user-schema, a
wrapping-procedure in ctxsys' schema and finally the index. All
works fine so far but I get an ORA-03113 "end-of-file on
communication channel" error when querying the table with
contains. The procedure itself works.
Here's what I tried in detail:
I created a table "alldocs" containing the tablename and
primary-key-value of each line of each table plus a dummy-column
for the index:
create table alldocs(
table varchar2(30) not null,
id number not null,
data char(1),
primary key(tabelle, id)
I filled this table:
insert into alldocs (select 'MYDOCS', id, 'a' from mydocs);
insert into alldocs (select 'OTHERDOCS', id, 'b' from otherdocs);
The user's procedure - only dummy for testing - is:
create procedure test.GetAllDocsData(row IN ROWID, data IN OUT
NOCOPY CLOB) IS
     tabname varchar2(30);
     myid     number;
     tmpclob clob;
begin
     dbms_lob.createtemporary(tmpclob, TRUE);
     dbms_lob.writeappend(tmpclob, 34, 'Ein Text mit ca. 20
Zeichen Ldnge.');
     data := tmpclob;
end;
In ctxsys' schema I defined the following procedure and the
datastore:
create or replace procedure sysGetAllDocsData(rid in rowid, tlob
in out clob) is
begin
test.GetAllDocsData(rid, tlob);
end sysGetAllDocsData;
grant execute on sysGetAllDocsData to test;
call ctx_ddl.create_preference('MyUserDS', 'user_datastore');
call ctx_ddl.set_attribute('MyUserDS', 'procedure',
'sysGetAllDocsData');
call ctx_ddl.set_attribute('MyUserDS', 'output_type', 'CLOB');
Finally I defined the index:
create index test.alldocs_ctx on test.alldocs(data)
     indextype is ctxsys.context
     parameters ('DATASTORE CTXSYS.MyUserDS FILTER
CTXSYS.INSO_FILTER LEXER BASIC_LEXER');
This all works without errors. But when querying like this:
select * from test.alldocs where contains('data', 'Text')>0
the answer is
ORA-03113: end-of-file on communication channel
I hope someone can help.
Greetings
Ralf

Hi Ralf,
please define first your own preferences like this:
exec CTX_DDL.drop_preference('MY_LEXER');
exec CTX_DDL.create_preference('MY_LEXER','BASIC_LEXER');
exec CTX_DDL.set_attribute('MY_LEXER','ALTERNATE_SPELLING',
'GERMAN');
exec CTX_DDL.set_attribute('MY_LEXER','BASE_LETTER','YES');
exec CTX_DDL.set_attribute('MY_LEXER','MIXED_CASE', 'NO');
exec CTX_DDL.set_attribute('MY_LEXER','INDEX_THEMES','NO');
exec CTX_DDL.set_attribute('MY_LEXER','INDEX_TEXT', 'YES');
exec CTX_DDL.set_attribute('MY_LEXER','COMPOSITE', 'GERMAN');
exec ctx_ddl.Drop_Preference ('MY_FILTER');
exec ctx_ddl.Create_Preference ('MY_FILTER','NULL_FILTER');
exec ctx_ddl.drop_section_group ('MY_SECTION');
exec ctx_ddl.create_section_group
('MY_SECTION','NULL_SECTION_GROUP');
and then create your index with this preferences. You only need
an INSO filter if you want to index pdf,word,...
create index test.alldocs_ctx on test.alldocs(data)
     indextype is ctxsys.context
     parameters ('DATASTORE CTXSYS.MyUserDS FILTER
CTXSYS.INSO_FILTER LEXER BASIC_LEXER');create index test.alldocs_ctx on test.alldocs(data)
     indextype is ctxsys.context
     parameters ('
DATASTORE CTXSYS.MyUserDS
lexer MY_LEXER
filter MY_FILTER
section group MY_SECTION');
Then see in the token table what tokens are in the index:
select token_text from dr$alldocs_ctx$i;
If you got also an ORA-3113 see in alert.log if there is a trace
referenced with this error and have a look in this file to find a
better error message.
Good luck.
Thomas

How to validate for non-english character on a single line text field

In a "Single Line Text" field we would like to allow the users to enter alpha numeric values only. We should show error when the user enter non-English values like
carácter
Vijayaragavan, MCTS

Hi,
According to your post, my understanding is that you wanted to validate for non-english character on a single line text field.
I recommend to use jQuery to attach regular expression validation. Please refer to:
Using #jQuery to attach regular expression validation to a #SharePoint list form field
In addition, for custom validations you can create your own Types. Refer to
this[^] for creating custom field type
More information:
SharePoint Custom Field - Regex Validator
Thanks,
Linda Li
Forum Support
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact
[email protected]
Linda Li
TechNet Community Support

How to escape the special character ' (ascii 39) in a select query?

Hi,
does anybody know how to escape the special character ' (ascii 39) in a select query?
I've tried a lot of ways but nothing seems to work, for example I try to get all
names in table foo where coloumn name contains a '-sign (ascii 39)
select name from foo where name like '%\'%';
select name from foo where name like '%{'}%';
select name from atg_horse where name like '%chr(39)%'
... but neither works, I end up with a ORA-01756: quoted string not properly terminated
I would apriciate any help
/Carl-Michael

friends
thanks for ur time and effort that u gave to reply to my problem.
But my main problem is that when my application (VC++ 7) fires the following query in the oracle database , it does not return any rows.
SELECT count(*) FROM ORGANISATION WHERE UPPER(ORGANISATION.ORGANISATIONNAME)
LIKE N'β%' ORDER BY ORGANISATION.ORGANISATIONNAME
the above question in the previous thread was just to check on sql plus as it's editor does not support unicode characters.

How to escape the special character ' (ascii 39) in a query

Hi,
does anybody know how to escape the special character ' (ascii 39) in a select query?
I've tried a lot of ways but nothing seems to work, for example I try to get all
names in table foo where coloumn name contains a '-sign (ascii 39)
select name from foo where name like '%\'%';
select name from foo where name like '%{'}%';
select name from atg_horse where name like '%chr(39)%'
... but neither works, I end up with a ORA-01756: quoted string not properly terminated
I would apriciate any help
/Carl-Michael

Use two single quotes inside your literals to represent one single quote.
For example, this would find my name:
SELECT *
FROM emp
WHERE name = 'Michael O''Neill';
Michael O'Neill
(acutely aware of the apostrophe issues in the world)

Using intermedia text

Hello,
I'm working on a website at the moment which is cgi based and has an Oracle 8i backend.
On this website users can upload word documents etc into an knowledge base. These documents are physically held on the file system
What I want to do is to upload the documents to an Oracle table and then use intermedia text to search on these documents. I would like to avail of intermedia Themes & Gists and the "ranking" system it uses. In other words I would like the search to return something similar to the search results you find in Oracle Portal.
Any information on how to incorporate oracle intermedia into an existing cgi based website would be much appreciated.
thank you.
aidan

Hi,
For documentation see here on technet: products -> Oracle Text.
You don't have to load the documents into the database when they are already in the filesystem.
You can create a table with an entry for each filename.
Here is a sample script for FILE_DATASTORE with INSO FILTER (for filtering word and other documents).
=========================================================
-- Sample INSO Filter and FileDatastore
drop table datastores;
create table datastores(id number primary key, docs varchar2(2000));
insert into datastores values(1,'whitepaper.pdf');
commit;
-- Create Preferences
exec CTX_DDL.drop_preference('MY_LEXER');
exec CTX_DDL.create_preference('MY_LEXER','BASIC_LEXER');
exec CTX_DDL.set_attribute('MY_LEXER','BASE_LETTER','YES');
exec CTX_DDL.set_attribute('MY_LEXER','MIXED_CASE', 'NO');
exec CTX_DDL.set_attribute('MY_LEXER','INDEX_THEMES','NO');
exec CTX_DDL.set_attribute('MY_LEXER','INDEX_TEXT', 'YES');
exec ctx_ddl.drop_section_group ('MY_SECTION');
exec ctx_ddl.create_section_group ('MY_SECTION','NULL_SECTION_GROUP');
exec ctx_ddl.drop_preference('COMMON_DIR');
exec ctx_ddl.create_preference('COMMON_DIR','FILE_DATASTORE');
exec ctx_ddl.set_attribute('COMMON_DIR','PATH','/tmp/pdf');
exec Ctx_Ddl.Drop_Preference ('inso_filter_pref');
exec Ctx_Ddl.Create_Preference ('INSO_FILTER_PREF', 'INSO_FILTER');
-- Create Text Index
-- drop index datastores_text;
exec ctx_output.start_log('index.log');
create index datastores_text on datastores (docs)
indextype is ctxsys.context
parameters ('datastore COMMON_DIR
filter INSO_FILTER_PREF
lexer MY_LEXER
section group MY_SECTION
memory 50M');
exec ctx_output.end_log;
select count(*) from dr$datastores_text$i;
select token_text from dr$datastores_text$i;

Using InterMedia Text with FrameMaker, StarOffice...

I'm planning to use InterMedia text with various kinds of documents, but inso filter does not support them. In particular, it does not support:
- Framemaker
- PostScript (I know it works on encapsulated PostScript)
- Applix
Where can I find the right filters?
Is there a way to use InterMedia text with these documents?
Thank you
Paolo Bonanomi

I'd suggest searching the web - there are a number of little freeware filters out there that could be used as user-filters.>Have anybody found a postscript filter and can post it here ?
Regards,
Mihai

Intermedia Text/Hide Tags.

I use intermedia text to store files with tags like internet (i.e <Start> bla ..</End>.
I use developer 6 to search and retrive information, but developer show me the tags,
How can I do to hide the tags?
Thanks for the help.
Regards.
null

Hi Sanjoy,
Please post your question in the following discussion forum.
Multimedia (formerly interMedia)
Regards,
Anupama

InterMedia Text Search results

We have interMedia Text enabled on our 3.0.9.8.2 install and, for Search Results, I need to understand how the percentage score is calculated and, if results have the same score, how the order is determined. Is it possible to reorder the results because it appears to be random? Can anyone point me to the relevant documentation?

So Stephen, if I understand correctly, you have URL items, where the URL references the content in the IFS repository. This means that these items are being indexed by the WWSBR_URL_CTX_INDX. It'd be interesting to see if the results are returned as you would expect them to be using this index alone. This will tell you if there is a problem with Intermedia Text or if the problem lies with the way that Portal is using Intermedia Text and combining the scores from the multiple indexes.
Try running a SQL query like
select i.title, score(10) scr from wwv_things i, wwsbr_url$ u
where i.id=u.object_id
and contains (u.absolute_url,'${oracle}',10) > 0
order by scr desc
This will match your search term against only text which was indexed by the URL index and returns the display name of the corresponding item. Here I've searched for the term 'oracle'; change this to whatever you were using in your testcase. Note also that the $ implies the stem operator which is used by default in Portal.
If this query doesn't return you the scores that you were expecting then the problem is to do with the way that Intermedia Text is indexing your PDF documents. If it does return what you'd expect then we need to look more closely at what Portal is doing with the scores.

Character ~(ascii(126)) in Intermedia Text

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