Submitted by: Oleg Matveyev (o_matveev)

Start system audit with fbtrace.conf

include\_filter		%12345678%
log\_statement\_prepare true
log\_statement\_start true
max\_sql\_length 300
log\_filename s:\\\\sql\_data\\\\test\_trace\.txt

Start any query with text length more than 16Kb raise exception in the firebird.log:

OLEG Wed Nov 19 01:18:57 2014
Trace plugin fbtrace.dll returned error on call tpl_event_dsql_prepare.
Error details: Firebird::string - length exceeds predefined limit

and query was skiped in the logfile!