Application Development Software

I am having problems trying to set up full-text indexing and search with Universal Content Management (UCM). I followed the Oracle Content Server Installation Guide for windows at [http://download-west.oracle.com/docs/cd/E10316_01/cs/cs_doc_10/documentation/integrator/install_cserver_win_10en.pdf].

What I did was:
1. Modify E:\oracle\ucm\server\config\config.cfg by adding SearchIndexerEngineName=DATABASE.FULLTEXT to the end of the file.
2. Restart the content server.
3. Rebuild the search indexing using Repository Manager.

However, I keep seeing the following error when I query by entering words in the "Full-Text Search" box.

Unable to retrieve search results. Unable to retrieve search results. Unable to create result set for query 'SELECT IdcColl1.dID, dDocName, dDocTitle, dDocType, dRevisionID, dSecurityGroup, dDocAuthor, dDocAccount, dRevLabel, dFormat, dOriginalName, dExtension, dWebExtension, dInDate, dOutDate, dCreateDate, dPublishType, dRendition1, dRendition2, VaultFileSize, WebFileSize, URL, dFullTextFormat, dFullTextCharset, DocMeta.*
FROM IdcColl1, DocMeta
WHERE IdcColl1.dID=DocMeta.dID AND (((CONTAINS(dDocFullText,'test') > 0 ))) ORDER BY dInDate Desc'. ORA-20000: Oracle Text error:
DRG-10599: column is not indexed

Some web searches suggested the following (all of which I have tried but not resolved this problem).
1. Publish the schema using Configuration Manager (applet) and then rebuild index
2. Set the dDocFullText as a "zone field". This is not possible, because dDocFullText does not show up under the list of fields under "Database" or "DatabaseFullText" for the Search Engine drop down (when using Zone Fields Configuration).
3. Reboot the server (did not work either).

I logged onto the Oracle database and checked the IdcColl1 table. There is indeed, no index for the field, dDocFullText. There is only 1 index for the field, did. The field, dDocFullText, is a BLOB. The question is, if I am supposed to create an index manually for this field, how would I do it? A web search has not been fruitful in answering this question.

Here are my server settings.
For UCM:
Operating System: Windows 2003 Enterprise
UCM : 10gR3
Memory: 1 GB
Web Server: Apache 2.2.11

For Oracle:
Operating System: Windows 2003 Enterprise
Oracle: 10gR2
Memory: 1 GB

Thanks.