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Query and Document Services Performance Issue with AUTO_LEXER (Doc ID 1126248.1)

Last updated on FEBRUARY 21, 2019

Applies to:

Oracle Text - Version 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 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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