-my $sth=$dbh->prepare($fixit);
-my $res = $sth->execute() or die "can't execute";
-print "$res\n"; #did it work?
-$dbh->disconnect();
+my $sth = C4::Context->dbh->prepare($fixit);
+my $res = $sth->execute() or die "cannot execute query: $fixit";
+
+# There is no need to return anything if we succeeded,
+# and the die message (or other more internal Context/mysql error)
+# will get emailed to the cron user if we didn't.