我在Plone 4.3.8网站上遇到ConnectionStateError时遇到问题。
我找不到它发生的原因。我在很多不同的情况下得到它，我会发布一些追溯来向你展示我的意思。
加载portlet页面：
2016-08-01T11:38:15 ERROR Zope.SiteErrorLog 1470044295.40.967961803473 https://mysite.it/home-page/two-columns
Traceback (innermost last):
Module ZPublisher.Publish, line 127, in publish
Module ZPublisher.BaseRequest, line 607, in traverse
Module Products.PluggableAuthService.PluggableAuthService, line 244, in validate
Module Products.PluggableAuthService.PluggableAuthService, line 652, in _extractUserIds
Module Products.WebServerAuth.plugin, line 131, in authenticateCredentials
Module ZODB.Connection, line 857, in setstate
ConnectionStateError: Shouldn't load state for 0x184af9 when the connection is closed
加载随机文件夹：
2016-08-01T13:04:17 ERROR Zope.SiteErrorLog 1470049457.660.586381895694 https://mysite.it/some/path/folder_tabular_view
Traceback (innermost last):
Module ZPublisher.Publish, line 138, in publish
Module ZPublisher.mapply, line 77, in mapply
Module ZPublisher.Publish, line 48, in call_object
Module Shared.DC.Scripts.Bindings, line 322, in __call__
Module Shared.DC.Scripts.Bindings, line 359, in _bindAndExec
Module Products.CMFCore.FSPageTemplate, line 237, in _exec
Module Products.CMFCore.FSPageTemplate, line 177, in pt_render
Module Products.PageTemplates.PageTemplate, line 87, in pt_render
Module zope.pagetemplate.pagetemplate, line 132, in pt_render
Module five.pt.engine, line 93, in __call__
Module z3c.pt.pagetemplate, line 149, in render
Module chameleon.zpt.template, line 261, in render
Module chameleon.template, line 191, in render
Module chameleon.template, line 171, in render
Module 3d823c0177a7023e7fe9a133289da7b0.py, line 853, in render
Module 153d4bce30f6569f92b3bf03cb6d6485.py, line 1060, in render_master
Module z3c.pt.expressions, line 58, in render_content_provider
Module zope.viewlet.manager, line 112, in update
Module zope.viewlet.manager, line 118, in _updateViewlets
Module plone.app.layout.links.viewlets, line 122, in update
Module Products.CMFPlone.browser.syndication.utils, line 47, in context_enabled
Module zope.component.hookable, line 33, in __call__
Module zope.component.hooks, line 104, in adapter_hook
Module Products.CMFPlone.browser.syndication.settings, line 23, in __init__
Module zope.annotation.attribute, line 44, in get
Module ZODB.Connection, line 857, in setstate
ConnectionStateError: Shouldn't load state for 0x05f568 when the connection is closed
- Expression: "provider:plone.htmlhead.links"
- Filename: ... me/skins/my_plonetheme_custom_templates/main_template.pt
- Location: (line 32: col 37)
- Source: ... replace="structure provider:plone.htmlhead.links" />
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- Arguments: repeat: {...} (0)
template: <ImplicitAcquisitionWrapper folder_tabular_view at 0x7fb4e901b820>
modules: <instance - at 0x7fb509ba5878>
here: <ImplicitAcquisitionWrapper i-commisione-consiliare at 0x7fb4e901ba50>
user: <ImplicitAcquisitionWrapper - at 0x7fb4e901baf0>
nothing: <NoneType - at 0x937be0>
container: <ImplicitAcquisitionWrapper i-commisione-consiliare at 0x7fb4e901ba50>
default: <object - at 0x7fb510fbc520>
request: <instance - at 0x7fb4ddaafe60>
wrapped_repeat: <SafeMapping - at 0x7fb4df604520>
traverse_subpath: <list - at 0x7fb4dfba61b8>
loop: {...} (0)
context: <ImplicitAcquisitionWrapper i-commisione-consiliare at 0x7fb4e901ba50>
translate: <function translate at 0x7fb4de933848>
root: <ImplicitAcquisitionWrapper Zope at 0x7fb4e8b5a960>
options: {...} (1)
target_language: <NoneType - at 0x937be0>
加载Viewlet：
2016-08-02T22:53:57 ERROR plone.app.viewletmanager rendering of plone.belowcontenttitle in plone.belowcontenttitle.documentbyline fails: Shouldn't load state for 0x1e3183 when the connection is closed
- Expression: "context/Rights"
- Filename: ... 4-py2.7.egg/plone/app/layout/viewlets/document_byline.pt
- Location: (line 79: col 33)
- Source: ... rights tal:define="rights context/Rights"
^^^^^^^^^^^^^^
- Arguments: repeat: {...} (0)
template: <ViewPageTemplateFile - at 0x7fb501617990>
views: <ViewMapper - at 0x7fb4deb88410>
modules: <instance - at 0x7fb509ba5878>
args: <tuple - at 0x7fb51109e050>
here: <ImplicitAcquisitionWrapper notizie at 0x7fb4ea918aa0>
user: <ImplicitAcquisitionWrapper - at 0x7fb4e8734960>
nothing: <NoneType - at 0x937be0>
container: <ImplicitAcquisitionWrapper notizie at 0x7fb4ea918aa0>
request: <instance - at 0x7fb4f13d37e8>
wrapped_repeat: <SafeMapping - at 0x7fb4d7edd7e0>
traverse_subpath: <list - at 0x7fb4de297dd0>
default: <object - at 0x7fb510fbc520>
loop: {...} (0)
context: <ImplicitAcquisitionWrapper notizie at 0x7fb4ea918aa0>
view: <DocumentBylineViewlet plone.belowcontenttitle.documentbyline at 0x7fb4deb888d0>
translate: <function translate at 0x7fb4dc1ce320>
root: <ImplicitAcquisitionWrapper Zope at 0x7fb4dfcd4370>
options: {...} (0)
target_language: <NoneType - at 0x937be0>
Traceback (most recent call last):
File "/opt/cache/buildout/eggs/plone.app.viewletmanager-2.0.9-py2.7.egg/plone/app/viewletmanager/manager.py", line 110, in render
html.append(viewlet.render())
File "/opt/cache/buildout/eggs/plone.app.layout-2.3.14-py2.7.egg/plone/app/layout/viewlets/common.py", line 50, in render
return self.index()
File "/opt/cache/buildout/eggs/Zope2-2.13.23-py2.7.egg/Products/Five/browser/pagetemplatefile.py", line 125, in __call__
return self.im_func(im_self, *args, **kw)
File "/opt/cache/buildout/eggs/Zope2-2.13.23-py2.7.egg/Products/Five/browser/pagetemplatefile.py", line 59, in __call__
sourceAnnotations=getattr(debug_flags, 'sourceAnnotations', 0),
File "/opt/cache/buildout/eggs/zope.pagetemplate-3.6.3-py2.7.egg/zope/pagetemplate/pagetemplate.py", line 132, in pt_render
strictinsert=0, sourceAnnotations=sourceAnnotations
File "/opt/cache/buildout/eggs/five.pt-2.2.3-py2.7.egg/five/pt/engine.py", line 93, in __call__
return self.template.render(**kwargs)
File "/opt/cache/buildout/eggs/z3c.pt-2.2.3-py2.7.egg/z3c/pt/pagetemplate.py", line 149, in render
return base_renderer(**context)
File "/opt/cache/buildout/eggs/Chameleon-2.24-py2.7.egg/chameleon/zpt/template.py", line 261, in render
return super(PageTemplate, self).render(**vars)
File "/opt/cache/buildout/eggs/Chameleon-2.24-py2.7.egg/chameleon/template.py", line 191, in render
raise_with_traceback(exc, tb)
File "/opt/cache/buildout/eggs/Chameleon-2.24-py2.7.egg/chameleon/template.py", line 171, in render
self._render(stream, econtext, rcontext)
File "c3f6907c0e1b52a047b37fee3042155a.py", line 699, in render
File "/opt/cache/buildout/eggs/five.pt-2.2.3-py2.7.egg/five/pt/expressions.py", line 161, in __call__
return base()
File "/opt/cache/buildout/eggs/Products.Archetypes-1.9.10-py2.7.egg/Products/Archetypes/ClassGen.py", line 56, in generatedAccessor
return schema[name].get(self, **kw)
File "/opt/cache/buildout/eggs/wicked-1.1.12-py2.7.egg/wicked/fieldevent/__init__.py", line 29, in render
notify(renderer)
File "/opt/cache/buildout/eggs/zope.event-3.5.2-py2.7.egg/zope/event/__init__.py", line 31, in notify
subscriber(event)
File "/opt/cache/buildout/eggs/zope.component-3.9.5-py2.7.egg/zope/component/event.py", line 24, in dispatch
zope.component.subscribers(event, None)
File "/opt/cache/buildout/eggs/zope.component-3.9.5-py2.7.egg/zope/component/_api.py", line 136, in subscribers
return sitemanager.subscribers(objects, interface)
File "/opt/cache/buildout/eggs/zope.component-3.9.5-py2.7.egg/zope/component/registry.py", line 321, in subscribers
return self.adapters.subscribers(objects, provided)
File "/opt/cache/buildout/eggs/zope.interface-3.6.7-py2.7-linux-x86_64.egg/zope/interface/adapter.py", line 585, in subscribers
subscription(*objects)
File "/opt/cache/buildout/eggs/wicked-1.1.12-py2.7.egg/wicked/fieldevent/__init__.py", line 16, in notifyFieldEvent
event.value = getMultiAdapter((field, event), IFieldValue)
File "/opt/cache/buildout/eggs/zope.component-3.9.5-py2.7.egg/zope/component/_api.py", line 107, in getMultiAdapter
adapter = queryMultiAdapter(objects, interface, name, context=context)
File "/opt/cache/buildout/eggs/zope.component-3.9.5-py2.7.egg/zope/component/_api.py", line 120, in queryMultiAdapter
return sitemanager.queryMultiAdapter(objects, interface, name, default)
File "/opt/cache/buildout/eggs/zope.component-3.9.5-py2.7.egg/zope/component/registry.py", line 238, in queryMultiAdapter
objects, interface, name, default)
File "/opt/cache/buildout/eggs/zope.interface-3.6.7-py2.7-linux-x86_64.egg/zope/interface/adapter.py", line 532, in queryMultiAdapter
result = factory(*objects)
File "/opt/cache/buildout/eggs/wicked-1.1.12-py2.7.egg/wicked/fieldevent/meta.py", line 78, in field_value
return _get(field, event.instance, **event.kwargs)
File "/opt/cache/buildout/eggs/Products.Archetypes-1.9.10-py2.7.egg/Products/Archetypes/Field.py", line 1502, in get
if not shasattr(value, 'transform'): # oldBaseUnits have no transform
File "/opt/cache/buildout/eggs/Products.Archetypes-1.9.10-py2.7.egg/Products/Archetypes/utils.py", line 734, in shasattr
return getattr(obj, attr, _marker) is not _marker
File "/opt/cache/buildout/eggs/ZODB3-3.10.5-py2.7-linux-x86_64.egg/ZODB/Connection.py", line 857, in setstate
raise ConnectionStateError(msg)
ConnectionStateError: Shouldn't load state for 0x1e3183 when the connection is closed
- Expression: "context/Rights"
- Filename: ... 4-py2.7.egg/plone/app/layout/viewlets/document_byline.pt
- Location: (line 79: col 33)
- Source: ... rights tal:define="rights context/Rights"
^^^^^^^^^^^^^^
- Arguments: repeat: {...} (0)
template: <ViewPageTemplateFile - at 0x7fb501617990>
views: <ViewMapper - at 0x7fb4deb88410>
modules: <instance - at 0x7fb509ba5878>
args: <tuple - at 0x7fb51109e050>
here: <ImplicitAcquisitionWrapper notizie at 0x7fb4ea918aa0>
user: <ImplicitAcquisitionWrapper - at 0x7fb4e8734960>
nothing: <NoneType - at 0x937be0>
container: <ImplicitAcquisitionWrapper notizie at 0x7fb4ea918aa0>
request: <instance - at 0x7fb4f13d37e8>
wrapped_repeat: <SafeMapping - at 0x7fb4d7edd7e0>
traverse_subpath: <list - at 0x7fb4de297dd0>
default: <object - at 0x7fb510fbc520>
loop: {...} (0)
context: <ImplicitAcquisitionWrapper notizie at 0x7fb4ea918aa0>
view: <DocumentBylineViewlet plone.belowcontenttitle.documentbyline at 0x7fb4deb888d0>
translate: <function translate at 0x7fb4dc1ce320>
root: <ImplicitAcquisitionWrapper Zope at 0x7fb4dfcd4370>
options: {...} (0)
target_language: <NoneType - at 0x937be0>
我可以选择许多不同的例子。 我似乎无法找到原因，我可能错过了一些可能导致问题的信息。
我会提供所需的任何额外信息，随时问:) 谢谢！
答案 0 :(得分：3)
ConnectionStateError可以通过多种问题生成。
有时您只需要重新启动客户端，但我相信您已经尝试过了。
你也可能在zeo服务器上出错了（你有一个，对吧？）。检查其日志并评估是否值得重新启动。
更常见的情况：您正在使用plone.memoize中的RAMCache，但您正在追逐持久对象。 不要这样做。