The EntityManager is closed

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entitymanager is closed spring
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doctrine entity manager
symfony entity manager
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doctrine get all entity managers
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[Doctrine\ORM\ORMException]   
The EntityManager is closed.  

After I get a DBAL exception when inserting data, EntityManager closes and I'm not able to reconnect it.

I tried like this but it didn't get a connection.

$this->em->close();
$this->set('doctrine.orm.entity_manager', null);
$this->set('doctrine.orm.default_entity_manager', null);
$this->get('doctrine')->resetEntityManager();
$this->em = $this->get('doctrine')->getEntityManager();

Anyone an idea how to reconnect?

This is a very tricky problem since, at least for Symfony 2.0 and Doctrine 2.1, it is not possible in any way to reopen the EntityManager after it closes.

The only way I found to overcome this problem is to create your own DBAL Connection class, wrap the Doctrine one and provide exception handling (e.g. retrying several times before popping the exception out to the EntityManager). It is a bit hacky and I'm afraid it can cause some inconsistency in transactional environments (i.e. I'm not really sure of what happens if the failing query is in the middle of a transaction).

An example configuration to go for this way is:

doctrine:
  dbal:
    default_connection: default
    connections:
      default:
        driver:   %database_driver%
        host:     %database_host%
        user:     %database_user%
        password: %database_password%
        charset:  %database_charset%
        wrapper_class: Your\DBAL\ReopeningConnectionWrapper

The class should start more or less like this:

namespace Your\DBAL;

class ReopeningConnectionWrapper extends Doctrine\DBAL\Connection {
  // ...
}

A very annoying thing is that you have to override each method of Connection providing your exception-handling wrapper. Using closures can ease some pain there.

"The EntityManager is closed" with Symfony and Doctrine2 modules , [Doctrine\ORM\ORMException] The EntityManager is closed. If I do not enable the Doctrine2 module, the tests all succeed. But without it enabled,  the problem can be caused by a \Throwable thrown during a transaction. When you look into the code of method UnitOfWork#commit(), it does an automatic rollback after a \Throwable is thrown and it closes EntityManager. When trying to work with EntityManager after this, an exception is thrown because EntityManager is already closed.

My solution.

Before doing anything check:

if (!$this->entityManager->isOpen()) {
    $this->entityManager = $this->entityManager->create(
        $this->entityManager->getConnection(),
        $this->entityManager->getConfiguration()
    );
}

All entities will be saved. But it is handy for particular class or some cases. If you have some services with injected entitymanager, it still be closed.

Reason why EntityManager is closed · Issue #7124 · doctrine/orm , Hi there, I get the famous exception "The EntityManager is closed". But I can't find a way to know why the entity manager has been closed  The exception is clearly saying EntityManager is closed. There are following things you can do. move getResponse () method to some service class and annotate the method with @transactional. Call this method from your controller. Remove @Transactional from PageRepository interface. Its really doesn't matter but it is recommended.

Symfony 2.0:

$em = $this->getDoctrine()->resetEntityManager();

Symfony 2.1+:

$em = $this->getDoctrine()->resetManager();

Doctrine 2 Exception EntityManager is closed, Doctrine 2's EntityManager class will permanently close connections upon failed transactions. Thus, further requests using these closed  The EntityManager.close method closes an entity manager to release its persistence context and other resources. After calling close, the application must not invoke any further methods on the EntityManager instance except for getTransaction and isOpen, or the IllegalStateException will be thrown. If the close method is invoked when a transaction is active, the persistence context remains managed until the transaction completes.

The EntityManager is closed - Exception, ERROR: Consume messages command exception. "The EntityManager is closed​." {"exception":"[object] (Doctrine\\ORM\\ORMException(code:  This is how I solved the Doctrine "The EntityManager is closed." issue. Basically each time there's an exception (i.e. duplicate key) or not providing data for a mandatory column will cause Doctrine to close the Entity Manager.

You can reset your EM so

// reset the EM and all aias
$container = $this->container;
$container->set('doctrine.orm.entity_manager', null);
$container->set('doctrine.orm.default_entity_manager', null);
// get a fresh EM
$em = $this->getDoctrine()->getManager();

Doctrine\ORM\Exception “The EntityManager is closed” – Creativ , A few days ago, we have encountered a strange error: “Entity Manager Closed”. After several minutes of research, we found the problem. We  Close the factory, releasing any resources that it holds. After a factory instance has been closed, all methods invoked on it will throw the IllegalStateException, except for isOpen, which will return false. Once an EntityManagerFactory has been closed, all its entity managers are considered to be in the closed state.

The Entity Manager Is Closed - More Info, The EntityManager becomes closed as soon as an SQL exception is thrown by the underlying connection. The "real" exception has surely  Every time we use the injected EntityManager, this proxy will either reuse the existing EntityManager or create a new one. Reuse usually occurs when we enable something like Open Session/EntityManager in View. Either way, the container ensures that each EntityManager is confined to one thread. 5. Hibernate Entity Operations

The EntityManager is closed, [Doctrine\ORM\ORMException] The EntityManager is closed. After I get a DBAL exception when inserting data, EntityManager closes and I'm not able to  When not explicitly flusing the entity manager within the transaction, the EntityManager and the Hibernate session is logically closed before the transaction is commited and hence before the hibernate session is flushed.

Doctrine 2, Выдает эксепшен The EntityManager is closed. В doctrine/orm/lib/Doctrine/ORM​/EntityManager.php есть поле closed, есть методы close(),  The EntityManager is closed (8) [Doctrine\ORM\ORMException] The EntityManager is closed. After I get a DBAL exception when inserting data, EntityManager closes and I'm not able to reconnect it. I tried like this but it didn't get a connection.

Comments
  • Why does the entity manager close?
  • @JaySheth The entity manager could close after a DBAL exception, or if you're doing an EntityManager->clear() before a flush. I've seen some people using DBAL exceptions to branch the execution flow, and then ending up with an EntityManager closed error. If you're getting this error, there's something wrong in the execution flow in your program.
  • @AlanChavez - I'm getting this error because I'm using Doctrine to write a semaphore flag to a table that is being accessed by multiple threads simultaneously. MySQL will error one of the two competing threads trying to create the semaphore, because the key constraint means only one of them can succeed. IMO there is a flaw in Doctrine that doesnt allow you to safely handle expected MySQL errors. Why should the entire MySQL connection be disconnected because one INSERT statement has a conflict?
  • You'll also see this error if you are trying to log exceptions to a database in the app.exception_listener but the exception (such as a constraint violation) closed the connection.
  • this is way better when the di container itself is not available. Thank you.
  • you may also want to pass the $this->entityManager->getEventManager() in the 3rd parameter.
  • WARNING: resetEntityManager is deprecated since Symfony 2.1. Use resetManager instead
  • Does this also reset the Unit Of Work?
  • @flu Considering the EntityManager class manages the UnitOfWork class, I suspect it would. However, I haven't tested this so can't be sure.
  • Fantastic explanation. I found something which is similar and thought it would be nice to contribute to your answer. Thank you very much.
  • Could you provide additional info about how is the first related to the second?
  • Can you expand on this?