Thank you for your answers. You're probably right, i will try on tomorrow.
I downloaded 7.7..2, and i fragmented the thesaurus in 6 smaller files i exported from basex. When "using thesaurus at" a small thesaurus (<5 Mo), basex 's cool. When using a larger one (25 Mo), basex fails and a new message appears: [BASX0005] Stack Overflow: Try tail recursion?"
I can't see how being "tail recursive" on a thesaurus. Query was 'xxxx' contains text 'vvvv' using thesaurus at 'bbb'.
Sorry for the problem, and thank you for being so reactive (could i say "responsive" :-))
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