This provides an option to use one transaction per fixture file

Command/LoadDataFixturesDoctrineCommand.php

@@ -41,6 +41,7 @@ protected function configure()
             ->addOption('append', null, InputOption::VALUE_NONE, 'Append the data fixtures instead of deleting all data from the database first.')
             ->addOption('em', null, InputOption::VALUE_REQUIRED, 'The entity manager to use for this command.')
             ->addOption('purge-with-truncate', null, InputOption::VALUE_NONE, 'Purge data by using a database-level TRUNCATE statement')
+            ->addOption('multiple-transactions', null, InputOption::VALUE_NONE, 'Use one transaction per fixture file instead of a single transaction for all')
             ->setHelp(<<<EOT
 The <info>doctrine:fixtures:load</info> command loads data fixtures from your bundles:
 
@@ -103,6 +104,6 @@ protected function execute(InputInterface $input, OutputInterface $output)
         $executor->setLogger(function($message) use ($output) {
             $output->writeln(sprintf('  <comment>></comment> <info>%s</info>', $message));
         });
-        $executor->execute($fixtures, $input->getOption('append'));
+        $executor->execute($fixtures, $input->getOption('append'),$input->getOption('multiple-transactions'));
     }
 }