use strict;
use warnings;
use DBI;

my $DSN = 'dbi:Pg:dbname=manojkumar';
my $username = 'manojkumar';
my $password = 'manojkumar';
my $TABLE_NAME = "fork_log";
my $DBH = DBI->connect($DSN,$username,$password);

if(fork()==0)
{
        my $result = "insert into $TABLE_NAME(method) values('Child Su
+ccess');";
        if($DBH->do("$result"))
        {
                my $result = "insert into query_log(message) values('Q
+uery success in fork child.');";
        }
        else
        {
                my $result = "insert into query_log(message) values('Q
+uery failed in fork child.');";
        }
        exit;
}
wait();
my $result = "insert into $TABLE_NAME(method) values('Parent Success')
+;";
my $STH = $DBH->do("$result");
[download]

In the above code, child process inserting values into the fork_log table and it is working fine. But in the parent the query is not executing and printing the following error.

DBD::Pg::db do failed: server closed the connection unexpectedly
        This probably means the server terminated abnormally
        before or while processing the request.
[download]

Why it is printing the above error and how can I solve this?