Gist implementation in Oracle

Is there any Gist implementation in Oracle available using Oracle's extensible indexing method. Since this could greatly help in spatial indexing method defintions.

Other than the scant thousands of pages available through http://docs.oracle.com ?
You could also go to http://otn.oracle.com and
1) Docs and white papers:
- click on Database (under Products, left edge) to get to the Database information
- then click on High Availability
- then click on Real Application CLusters and look at the various whote papers and supplement info
2) Example install articles
- click on Articles (top menu)
- search for DBA / RAC articles by people like Jeff Hunter
Alternately, GIYF / LMGTFY

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