postbit_legacy template editing error

[ninadbe]

I am editing postbit_legacy at "template" table. I want to displaye some images extracted from remote server after 1st post.
My code is as follows

if($post['postcount'] == 1)
{
    $dbh=mysql_connect("remote_ip:port", "username", "password") or die
    ('I cannot connect to the database because: ' . mysql_error());
     mysql_select_db ("db_name");

     code for extracting and displaying image here
}

After editing postbit_legacy with above customized code, I am getting following error

Incorrect key file for table '/tmp/#sql_791b_0.MYI'; try to repair it

When remote server connection string code is removed, I am not getting any errors.

It seems like I am getting error because existing connection is active


Please help me with this problem.

Thanks