The inserts are going into the database, so there is no issue there. Definitely not a DB message. Establish connection:

my $dbh = DBI->connect( "dbi:ODBC:AV_Lenovo", "", "",{RaiseError => 1,
+ PrintError => 1, AutoCommit => 0} ) or
die "Unable to connect: " . $DBI::errstr . "\n";
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... do stuff Do insert:

    my $sql = join ('', 
        "INSERT INTO raw ( 
         CHROM            
        ,POS            
        ,ID                
        ,REF            
        ,ALT            
        ,QUAL            
        ,FILTER            
        ,INFO            
        ,FORMAT    
        ) values (?, ?, ?, ?, ?, ?, ?, ?, ?);", "\n"
    );
     eval {
         my $sth = $dbh->prepare($sql);
         $sth->execute( @values );
     };
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If I output the @values, they look like this:

1
10235
rs540431307
T
TA
100
PASS
AC=6
G
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....so nothing unusual about them. And, as I mentioned, running the insert directly against SQL Server produces no messages.