print"$oligo_array_name appears in oligo_array but not in external_db\n";
$mismatch=1;
}
}
#foreach my $external_db_name (keys %external_db_names) {
# if (!$oligo_array_names{$external_db_name}) {
# print "$external_db_name appears in external_db but not in oligo_array\n";
# }
#}
if($mismatch){
print"At least one oligo array name was found that does not appear in external_db; this needs to be rectified before this script can be run successfully.\n";