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Tuning mixed Query (11g)

edited Jul 17, 2018 8:19AM in Oracle Text (MOSC) 2 commentsAnswered ✓

Currently we still run oracle dba 11g (11.4.x) in production.

One of our customers with about 2 Million documents is experience slow performance when using a mixed query with oracle text.

a oracle text Contains search (plain oracle text) is slow - means to take about 3 Minutes to get a response on a term "Test". Using a mixed search which should reduce the amount of documents down to 1% still takes 1 Minute.

Since i run these two queries, I could image that the second query response is somehow cached. 

This is one of the Example Queries:

Some session settings at the beginning:

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