"GIROIRE Nicolas (COFRAMI)" <nicolas(dot)giroire(at)airbus(dot)com> writes:
> In fact, now i put the variable to '' ( $myvar = '' ) but it seems that Perl
> don't empty totally memory.
See the nearby thread "plperl doesn't release memory". There's some
evidence that this may be due to a Perl configuration issue.
regards, tom lane