Flexfield indexing, is that smart?

We are using many customizations with flexfields. Unfortunately, many queries are based on those fields and according no index is present, full table scans are happening all the time (many of the tables has 2-8 mil. of records).
Because these tables are mostly under original APPS schemas (AR, AP...etc) we are aware that any modification of table structure is not recommended by Oracle.
Question:
1) If we place index on such fields, how much is that smart according any future update (patch)
2) Is there any other solution for problems like that? Oracle recommendations?
THX

Hi Funky,
About your questions:
1) If we place index on such fields, how much is that smart according any future update (patch)
Hard to be 100% sure you will never have problems with patches, but until now I have never had problems when applying patches having custom indexes created on flexfields. As you can find in Metalink recommendations about creating index on flexfield to improve performance, it should not be an issue.
2) Is there any other solution for problems like that? Oracle recommendations?
In some cases, Oracle recommends the creation of index on flexfields in order to improve performance, e.g.: AR Autoinvoice and Customer Searches. See notes 220251.1 and 271949.1 on Metalink.
Regards,
Ketter Ohnes

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