Here is my sample code which iam using to replicate the dead lock and using trycatch to handle the dead lock

Transaction A:sample

use strict;
use DBI;
use Execption::Class:TryCatch;

###opening connections

try eval{
   my $sql = "BEGIN TRAN \n";
   my $sql1 = "Update dead_test set a = '11' where b= 1 \n";
   my $sql2  = "WAITFOR DELAY '00:00:05'\n"
   my $sql3 = "Update dead_test1 set a = '22' where b= 2 \n";
   my $sql4 = "COMMIT \n" ; 
    $sql = $sql.$sql1.$sql2.$sql3.$sql4;
      $sql  = $dbh->pepare($sql);
    $sql ->execute();

};
if catch(my $err){

  print  $err;

eval {
   $dbh - >rollback };
}
[download]

Transaction B:sample

use strict;
use DBI;
use Execption::Class:TryCatch;

###opening connections

try eval{
   my $sql = "BEGIN TRAN \n";
   my $sql1 = "Update dead_test1 set a = '11' where b= 2 \n";
   my $sql2  = "WAITFOR DELAY '00:00:05'\n"
   my $sql3 = "Update dead_test set a = '22' where b= 1 \n";
   my $sql4 = "COMMIT \n" ; 
    $sql = $sql.$sql1.$sql2.$sql3.$sql4;
      $sql  = $dbh->pepare($sql);
    $sql ->execute();

};
if catch(my $err){

  print  $err;

eval {
   $dbh - >rollback };
}
[download]

Iam executing both the transaction from 2 unix sessions parallel. As of now it doesn;t return or print any error. The question is how to capture the error from that is return from database and rollback if it is a deadlock error (erronumber 1205).

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