Below is a cut down (ie error checking removed etc) version of a script I'm working on. The idea is that I call stored procedures but use my own error handler to control execution
$dbh->{syb_err_handler} = \&err_handler;
There is no problem when the called procedure works OK but on error when I try to disconnect via the terminate function I get...

syb_db_disconnect(): ct_con_drop() failed
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I've tried to clean up (calling finish on the statement handler) but can't get rid of the warning. Does any one have any other ideas?

#!/usr/local/bin/perl -w
use strict;
use DBI;
use DBD::Sybase;

my $dbh;
my $sth;

$dbh = DBI->connect(
   "DBI:Sybase:server=$ENV{'MY_SERVER'};database=$ENV{'MY_DB'}",
   $ENV{'MY_USER'}","$ENV{'MY_PASS'}",
   {AutoCommit => 1, PrintError => 0, RaiseError => 1});


# sql errors handler
$dbh->{syb_err_handler} = \&err_handler;

my $procedure_name = 'testproc';


$sth = $dbh->prepare("exec $procedure_name");



# Run the database procedure
$sth->execute();
do {
    while (my $data = $sth->fetch()) {
        if ($sth->{syb_result_type} == CS_ROW_RESULT) {
           print @$data,"\n";
        }
    }
} while ($sth->{syb_more_results});

$dbh->disconnect;
# Script ends

sub err_handler {
    my($err, $sev, $state, $line, $server, $proc, $msg) = @_;
        
    if ($err == 0) {
        # This is ok print output
        print "$msg\n";
        return 0; # This is not an error
    }
    else {
        # Problem encountered.
        my $errmsg = "Fatal error detected in procedure. $procedure_na
+me\n";
        $errmsg .= "Error number = $err\n";
        $errmsg .= "Severity     = $sev\n";
        $errmsg .= "State        = $state\n";
        $errmsg .= "Line         = $line\n";
        $errmsg .= "Server       = $server\n";
        $errmsg .= "Procedure    = $proc\n";
        $errmsg .= "Message      = $msg\n";
        $sth->finish() if $sth;
        terminate($errmsg);
    }
}

sub terminate {
    my $errmsg = shift;
    print "$errmsg\n";

    $sth->finish() if $sth;
    $dbh->disconnect if $dbh;

    exit 1;
}
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