In Oracle 9i&10G, in order to use function based indexes, you have to set :
QUERY_REWRITE_ENABLED=TRUE
QUERY_REWRITE_INTEGRITY=TRUSTED
http://www.akadia.com/services/ora_function_based_index_2.html
Testing the Datadog Explain Plan Visualizer with Oracle execution plans
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Datadog recently released a free online service explain.datadoghq.com where
you can paste in your explained SQL execution plans with metrics as JSON
text a...
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