I mistrust this line, because the order of operation is confusing:

my $s_off_no = $s_off_no;

Besides that, I'd expect to see something like: 

my $s_off_no = $cgi->param('s_off_no');

[download]
Perhaps you could post a follow-up with your form-handling code.

In reply to Re: CGI or DBI 'cache' problem by chromatic
in thread CGI or DBI 'cache' problem by slok

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