Oracle – Functions in where clause and Performance Issues.
Using Functions in Where clause cause performance issues.
Option 1: Use data conversions in upper layer, before sending data for comparison in where clause.
Option 2: Use Function based indexes.
For more information read….
http://www.oraclebrains.com/2006/12/understanding-function-based-indexes/
http://www.dba-oracle.com/oracle_news/2004_1_19_using_function_based_indexes%20.htm
http://www.dba-oracle.com/art_9i_indexing.htm
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Categories: Oracle
oracle functions performance
