What is Oracle Text?

Oracle Text uses standard SQL to index, search, and analyze text and documents stored in the Oracle database, in files, and on the web. Oracle Text can perform linguistic analysis on documents, as well as search text using a variety of strategies including keyword searching, context queries, Boolean operations, pattern matching, mixed thematic queries, HTML/XML section searching, and so on.

It can render search results in various formats including unformatted text, HTML with term highlighting, and original document format. Oracle Text supports multiple languages and uses advanced relevance-ranking technology to improve search quality. Oracle Text also offers advanced features like classification, clustering, and support for information visualization metaphors.

Oracle Text search technology provides the foundation for text processing in the Oracle Files, Oracle Ultra Search, the Oracle eBusiness Suite, and Oracle Application Server Portal, as well as the search technology on Oracle.com. Oracle uses its own Text technology across the board.

Where can I find more information and code samples?

The official page of Oracle Text in the Oracle Technology Network: 
http://www.oracle.com/technology/products/text/index.html