How can I speed up queries against tables I cannot add indexes to?

Posted by RenderIn on Stack Overflow See other posts from Stack Overflow or by RenderIn
Published on 2010-03-23T14:18:13Z Indexed on 2010/03/23 14:23 UTC
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sql

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Oracle

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database-indexes

I access several tables remotely via DB Link. They are very normalized and the data in each is effective-dated. Of the millions of records in each table, only a subset of ~50k are current records.

The tables are internally managed by a commercial product that will throw a huge fit if I add indexes or make alterations to its tables in any way.

What are my options for speeding up access to these tables?

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