I have tried with Perl fork manager and DBI . But i got the error DBD::mysql::st execute failed: Lost connection to MySQL server during query . Here the sample code: I want make query between low to high value (i have spitted int 10k records) 
use Parallel::ForkManager;
my $pm = new Parallel::ForkManager(50);
my $db = krish::DB->new or die $!; # its has all connection details 
while ( $low < $high  ) {
    # Some value manipulation 

    my $pid = $pm->start and next; 
    #db_execution returns execution 
    while ( my $sth = db_execution ( $db, $low , $high ) ) {
        ...
        #fetch row operation 
        ...
    }
    $pm->finish;
}

sub db_execution {
    ...
    my $dbh = $db->connect( 'students' ) or die $!;
    my $sth = $dbh->prepare( $sql ) or die "$!:" . $dbh->errstr;
    $sth->execute or die "$!:" . $sth->errstr;
    ...
}

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The same code is executing with out parallel processing. What is the issue? How to resolve is this?

In reply to Parllel Processing Database Query by krish1982

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