GoogleAppEngineLauncher：数据库磁盘映像格式错误

我为 Google App Engine 编写了一个小型应用程序，每次我想运行我的应用程序时，都会出现以下错误：

*** Running dev_appserver with the following flags:
    --skip_sdk_update_check=yes --port=13080 --admin_port=8005 --clear_datastore=yes
Python command: /usr/bin/python2.7
INFO     2014-11-22 07:47:57,008 devappserver2.py:745] Skipping SDK update check.
Traceback (most recent call last):
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/dev_appserver.py", line 83, in <module>
    _run_file(__file__, globals())
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/dev_appserver.py", line 79, in _run_file
    execfile(_PATHS.script_file(script_name), globals_)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/devappserver2/devappserver2.py", line 997, in <module>
    main()
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/devappserver2/devappserver2.py", line 990, in main
    dev_server.start(options)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/devappserver2/devappserver2.py", line 789, in start
    request_data, storage_path, options, configuration)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/devappserver2/devappserver2.py", line 888, in _create_api_server
    default_gcs_bucket_name=options.default_gcs_bucket_name)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/devappserver2/api_server.py", line 403, in setup_stubs
    logservice_stub.LogServiceStub(logs_path=logs_path))
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/api/logservice/logservice_stub.py", line 107, in __init__
    self._conn.execute(_REQUEST_LOG_CREATE)
sqlite3.DatabaseError: database disk image is malformed

当我运行我创建的其他应用程序时，没有任何错误。 我尝试了一些基本想法：

• 删除/重新添加应用程序

• 删除应用程序启动器并重新安装

• 重新启动Mac

• 使用 grep 查找数据库所在的位置

什么都没起作用。任何想法？

默认日志数据库文件名是log.db。它存储在您的应用程序存储目录中，默认情况下位于您的tempfile.gettempdir()目录，命名为appengine.[appname].[userid].

The appname部分取您的值app.yaml（寻找application条目），替换:冒号加下划线，并删除最后一个之前的所有内容~波形符（如果有的话）。

所以如果你的应用程序被称为foobar你的用户名是jbj，损坏的 SQLite 数据库位于：

`python -c 'import tempfile;print tempfile.gettempdir()'`/appengine.foobar.jbj/log.db

在 Mac OS X 上，tempfile.gettempdir()返回下的散列路径/var/folders某处;它只是取自TMPDIR环境变量，所以你should只需能够使用：

rm $TMPDIR/appengine.foobar.jbj/log.db

您可以安全地删除此文件，下次启动应用程序时它将重新创建。