[Unknown Error] Uncaught PDOException: SQLSTATE[HY000] [2002] Resource temporarily unavailable

Source

245                 $options[PDO::ATTR_EMULATE_PREPARES] = (bool)$isEmulatePrepares;
246             }
247 
248             // Disable stringified fetches
249             $options[PDO::ATTR_STRINGIFY_FETCHES] = false;
250         }
251 
252         // May throw a PDOException if fails
253         $this->pdoConnection = new PDO(
254             $this->driver . ':' . implode(';', $dsn),
255             empty($parameters['username']) ? '' : $parameters['username'],
256             empty($parameters['password']) ? '' : $parameters['password'],
257             $options
258         );
259 
260         // Show selected DB if requested

Trace

• PDO->__construct(<filtered>, <filtered>, <filtered>, <filtered>)
  PDOConnector.php:254
• SilverStripe\ORM\Connect\PDOConnector->connect(Array)
  MySQLDatabase.php:95
• SilverStripe\ORM\Connect\MySQLDatabase->connect(Array)
  DB.php:304
• SilverStripe\ORM\DB::connect(<filtered>, <filtered>)
  DB.php:108
• SilverStripe\ORM\DB::get_conn()
  DB.php:514
• SilverStripe\ORM\DB::is_active()
  RootURLController.php:77
• SilverStripe\CMS\Controllers\RootURLController->beforeHandleRequest(SilverStripe\Control\HTTPRequest)
  RootURLController.php:95
• SilverStripe\CMS\Controllers\RootURLController->handleRequest(SilverStripe\Control\HTTPRequest)
  Director.php:360
• SilverStripe\Control\Director->SilverStripe\Control\{closure}(SilverStripe\Control\HTTPRequest)
  VersionedHTTPMiddleware.php:41
• SilverStripe\Versioned\VersionedHTTPMiddleware->process(SilverStripe\Control\HTTPRequest, Closure)
  HTTPMiddlewareAware.php:62
• SilverStripe\Control\Director->SilverStripe\Control\Middleware\{closure}(SilverStripe\Control\HTTPRequest)
  LoginSessionMiddleware.php:29
• SilverStripe\SessionManager\Middleware\LoginSessionMiddleware->process(SilverStripe\Control\HTTPRequest, Closure)
  HTTPMiddlewareAware.php:62
• SilverStripe\Control\Director->SilverStripe\Control\Middleware\{closure}(SilverStripe\Control\HTTPRequest)
  ExecMetricMiddleware.php:20
• SilverStripe\Control\Middleware\ExecMetricMiddleware->process(SilverStripe\Control\HTTPRequest, Closure)
  HTTPMiddlewareAware.php:62
• SilverStripe\Control\Director->SilverStripe\Control\Middleware\{closure}(SilverStripe\Control\HTTPRequest)
  ConfirmationMiddleware.php:254
• SilverStripe\Control\Middleware\ConfirmationMiddleware->process(SilverStripe\Control\HTTPRequest, Closure)
  HTTPMiddlewareAware.php:62
• SilverStripe\Control\Director->SilverStripe\Control\Middleware\{closure}(SilverStripe\Control\HTTPRequest)
  ConfirmationMiddleware.php:254
• SilverStripe\Control\Middleware\ConfirmationMiddleware->process(SilverStripe\Control\HTTPRequest, Closure)
  HTTPMiddlewareAware.php:62
• SilverStripe\Control\Director->SilverStripe\Control\Middleware\{closure}(SilverStripe\Control\HTTPRequest)
  PasswordExpirationMiddleware.php:84
• SilverStripe\Security\PasswordExpirationMiddleware->process(SilverStripe\Control\HTTPRequest, Closure)
  HTTPMiddlewareAware.php:62
• SilverStripe\Control\Director->SilverStripe\Control\Middleware\{closure}(SilverStripe\Control\HTTPRequest)
  BasicAuthMiddleware.php:68
• SilverStripe\Security\BasicAuthMiddleware->process(SilverStripe\Control\HTTPRequest, Closure)
  HTTPMiddlewareAware.php:62
• SilverStripe\Control\Director->SilverStripe\Control\Middleware\{closure}(SilverStripe\Control\HTTPRequest)
  AuthenticationMiddleware.php:61
• SilverStripe\Security\AuthenticationMiddleware->process(SilverStripe\Control\HTTPRequest, Closure)
  HTTPMiddlewareAware.php:62
• SilverStripe\Control\Director->SilverStripe\Control\Middleware\{closure}(SilverStripe\Control\HTTPRequest)
  CanonicalURLMiddleware.php:190
• SilverStripe\Control\Middleware\CanonicalURLMiddleware->process(SilverStripe\Control\HTTPRequest, Closure)
  HTTPMiddlewareAware.php:62
• SilverStripe\Control\Director->SilverStripe\Control\Middleware\{closure}(SilverStripe\Control\HTTPRequest)
  HTTPCacheControlMiddleware.php:42
• SilverStripe\Control\Middleware\HTTPCacheControlMiddleware->process(SilverStripe\Control\HTTPRequest, Closure)
  HTTPMiddlewareAware.php:62
• SilverStripe\Control\Director->SilverStripe\Control\Middleware\{closure}(SilverStripe\Control\HTTPRequest)
  ChangeDetectionMiddleware.php:28
• SilverStripe\Control\Middleware\ChangeDetectionMiddleware->process(SilverStripe\Control\HTTPRequest, Closure)
  HTTPMiddlewareAware.php:62
• SilverStripe\Control\Director->SilverStripe\Control\Middleware\{closure}(SilverStripe\Control\HTTPRequest)
  FlushMiddleware.php:27
• SilverStripe\Control\Middleware\FlushMiddleware->process(SilverStripe\Control\HTTPRequest, Closure)
  HTTPMiddlewareAware.php:62
• SilverStripe\Control\Director->SilverStripe\Control\Middleware\{closure}(SilverStripe\Control\HTTPRequest)
  RequestProcessor.php:67
• SilverStripe\Control\RequestProcessor->process(SilverStripe\Control\HTTPRequest, Closure)
  HTTPMiddlewareAware.php:62
• SilverStripe\Control\Director->SilverStripe\Control\Middleware\{closure}(SilverStripe\Control\HTTPRequest)
  SessionMiddleware.php:20
• SilverStripe\Control\Middleware\SessionMiddleware->process(SilverStripe\Control\HTTPRequest, Closure)
  HTTPMiddlewareAware.php:62
• SilverStripe\Control\Director->SilverStripe\Control\Middleware\{closure}(SilverStripe\Control\HTTPRequest)
  AllowedHostsMiddleware.php:60
• SilverStripe\Control\Middleware\AllowedHostsMiddleware->process(SilverStripe\Control\HTTPRequest, Closure)
  HTTPMiddlewareAware.php:62
• SilverStripe\Control\Director->SilverStripe\Control\Middleware\{closure}(SilverStripe\Control\HTTPRequest)
  TrustedProxyMiddleware.php:176
• SilverStripe\Control\Middleware\TrustedProxyMiddleware->process(SilverStripe\Control\HTTPRequest, Closure)
  HTTPMiddlewareAware.php:62
• SilverStripe\Control\Director->SilverStripe\Control\Middleware\{closure}(SilverStripe\Control\HTTPRequest)
  HTTPMiddlewareAware.php:65
• SilverStripe\Control\Director->callMiddleware(SilverStripe\Control\HTTPRequest, Closure)
  Director.php:369
• SilverStripe\Control\Director->handleRequest(SilverStripe\Control\HTTPRequest)
  HTTPApplication.php:117
• SilverStripe\Control\HTTPApplication::SilverStripe\Control\{closure}(SilverStripe\Control\HTTPRequest)
  
• call_user_func(Closure, SilverStripe\Control\HTTPRequest)
  HTTPApplication.php:136
• SilverStripe\Control\HTTPApplication->SilverStripe\Control\{closure}(SilverStripe\Control\HTTPRequest)
  HTTPMiddlewareAware.php:65
• SilverStripe\Control\HTTPApplication->callMiddleware(SilverStripe\Control\HTTPRequest, Closure)
  HTTPApplication.php:137
• SilverStripe\Control\HTTPApplication->execute(SilverStripe\Control\HTTPRequest, Closure, )
  HTTPApplication.php:116
• SilverStripe\Control\HTTPApplication->handle(SilverStripe\Control\HTTPRequest)
  index.php:119