- Confluence uses Microsoft SQL Server.
- Confluence cannot start after installing or upgrading some plugins or the newly installed/upgraded plugins are disabled upon startup. Known affected plugins:
- Universal Plugin Manager (UPM)
- Office Connector
- SharePoint Connector
- Scroll Office
- (New) Code Macro
- Table Plugin
The following appears in the
In context similar to:
Take thread dumps of the process every 30 seconds from start-up until after the timeout warnings. If they contain the following, then the Workaround should apply. If not, the thread-dumps should help diagnose the real problem.
We have not identified the definite cause yet, but this problem happens when some of the plugins ended up waiting to get access to the BANDANA table. The problem is that Microsoft SQL Server is escalating row locks to table locks and thereby blocking access to the table and causing an effective deadlock. This bug is being tackled at CONF-21986.
Configure your database to use the recommended isolation level, which is Read Committed with Row Versioning. Please refer to the workaround listed in this KB article for instructions.
Upgrade to Confluence 3.5.9 or higher where CONF-21986 has been fixed.