Cause
the query plan for your query is invoking a matches operator functionally rather than as an index rowsource. The matches operator does not support functional invocation
the query plan for your query is invoking a matches operator functionally rather than as an index rowsource. The matches operator does not support functional invocation
add optimizer hints so that all matches operators are performed through index scans
Try the following links for this error:
http://docs.oracle.com/cd/E16655_01/server.121/e26079/drgus.htm
https://community.oracle.com/message/10019083
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