django/postgres：事务管理块以挂起的 COMMIT/ROLLBACK 结束

Question

我想运行manage.py sqldiff myapp（来自django扩展的命令），但出现以下错误：

Traceback (most recent call last):
  File "manage.py", line 11, in <module>
    execute_manager(settings)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 438, in execute_manager
    utility.execute()
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 379, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 191, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 220, in execute
    output = self.handle(*args, **options)
  File "/usr/local/lib/python2.7/dist-packages/django_extensions/management/commands/sqldiff.py", line 596, in handle
    sqldiff_instance.find_differences()
  File "/usr/local/lib/python2.7/dist-packages/django/db/transaction.py", line 222, in inner
    self.__exit__(None, None, None)
  File "/usr/local/lib/python2.7/dist-packages/django/db/transaction.py", line 207, in __exit__
    self.exiting(exc_value, self.using)
  File "/usr/local/lib/python2.7/dist-packages/django/db/transaction.py", line 302, in exiting
    leave_transaction_management(using=using)
  File "/usr/local/lib/python2.7/dist-packages/django/db/transaction.py", line 56, in leave_transaction_management
    connection.leave_transaction_management()
  File "/usr/local/lib/python2.7/dist-packages/django/db/backends/__init__.py", line 115, in leave_transaction_management
    raise TransactionManagementError("Transaction managed block ended with "
django.db.transaction.TransactionManagementError: Transaction managed block ended with pending COMMIT/ROLLBACK

manage.py runserver、shell、shell_plus都工作正常，但sqldiff命令阻塞。我尝试过：

• 重新启动 postgres 服务器
• 通过 psycopg2 从 shell 手动连接到 postgres，运行 连接.rollback() 和连接.commit()

但错误仍然存​​在。

欢迎任何关于可以做什么的想法！

干杯，

霍夫

Answer 1

我更新了 问题，sqldiff 导致了类似的问题。您最好的选择可能是从 github 存储库 获取 django-extensions 并执行一些操作调查。编辑sqldiff.py并注释掉装饰find_differences方法的事务代码：

#    @transaction.commit_manually
def find_differences(self):
...
#                transaction.rollback()  # reset transaction
...
#                transaction.commit()

现在你真正的问题应该被揭示出来，不再被事务异常所掩盖。