Query and Document Services Performance Issue with AUTO_LEXER
Last updated on FEBRUARY 13, 2018
Applies to:Oracle Text - Version 220.127.116.11 and later
Information in this document applies to any platform.
Query performance tests and queries using CTX_DOC.HIGHLIGHT on Text Index with AUTO_LEXER vs. WORLD_LEXER on database version 18.104.22.168 showed a dramatical performance drop (~ factor 20), i.e. CTX_DOC.HIGHLIGHT with AUTO_LEXER has been tested to be ~20 time slower than using WORLD_LEXER.
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