'Page Not Found' when navigating to Confluence Questions due to com.mysema.query.QueryException
Platform Notice: Data Center Only - This article only applies to Atlassian products on the Data Center platform.
Note that this KB was created for the Data Center version of the product. Data Center KBs for non-Data-Center-specific features may also work for Server versions of the product, however they have not been tested. Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Problem
Navigating to the Questions section of Confluence results in this:
The following appears in the atlassian-confluence.log
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2015-12-29 09:12:15,187 ERROR [AtlassianEvent::CustomizableThreadFactory-2] [atlassian.event.internal.AsynchronousAbleEventDispatcher] run There was an exception thrown trying to dispatch event [com.atlassian.confluence.plugins.questions.internal.lifecycle.ActiveObjectsController$AsyncEvent@c52477f] from the invoker [com.atlassian.confluence.event.ConfluenceListenerHandlersConfiguration$TimingListenerHandler$1$1@52251701]
java.lang.RuntimeException: com.atlassian.activeobjects.internal.ActiveObjectsInitException: bundle [com.atlassian.confluence.plugins.confluence-questions]
...
at java.lang.Thread.run(Thread.java:745)
Caused by: java.util.concurrent.ExecutionException: com.atlassian.activeobjects.internal.ActiveObjectsInitException: bundle [com.atlassian.confluence.plugins.confluence-questions]
at com.google.common.util.concurrent.AbstractFuture$Sync.getValue(AbstractFuture.java:331)
at com.google.common.util.concurrent.AbstractFuture$Sync.get(AbstractFuture.java:318)
....
at java.lang.reflect.Method.invoke(Method.java:497)
at com.atlassian.event.internal.SingleParameterMethodListenerInvoker.invoke(SingleParameterMethodListenerInvoker.java:36)
... 5 more
Caused by: com.atlassian.activeobjects.internal.ActiveObjectsInitException: bundle [com.atlassian.confluence.plugins.confluence-questions]
at com.atlassian.activeobjects.osgi.TenantAwareActiveObjects$1$1$1.call(TenantAwareActiveObjects.java:95)
at com.atlassian.activeobjects.osgi.TenantAwareActiveObjects$1$1$1.call(TenantAwareActiveObjects.java:86)
at com.atlassian.sal.core.executor.ThreadLocalDelegateCallable.call(ThreadLocalDelegateCallable.java:38)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
... 3 more
Caused by: com.mysema.query.QueryException: Caught SQLException for delete from `CONTENTPROPERTIES`
where `CONTENTPROPERTIES`.`PROPERTYID` in (select `PROPERTY_ID`
from (select `answerProperties`.`PROPERTYID` as `PROPERTY_ID`
from `CONTENT` `answers`
join `CONTENTPROPERTIES` `answerProperties`
on `answerProperties`.`CONTENTID` = `answers`.`CONTENTID`
left join (select `questionProperties`.`LONGVAL` as `ANSWER_ID`
from `CONTENT` `questions`
join `CONTENTPROPERTIES` `questionProperties`
on `questionProperties`.`CONTENTID` = `questions`.`CONTENTID`
where `questions`.`PLUGINKEY` = 'com.atlassian.confluence.plugins.confluence-questions:question' and `questions`.`PREVVER` is null and `questionProperties`.`PROPERTYNAME` = 'accepted') as `ACCEPTED_ANSWER_IDS`
on `answers`.`CONTENTID` = `ANSWER_ID`
where `answers`.`PLUGINKEY` = 'com.atlassian.confluence.plugins.confluence-questions:answer' and `answers`.`PREVVER` is null and `answerProperties`.`PROPERTYNAME` = 'accepted' and `ANSWER_ID` is null) as `TMP`)
at com.mysema.query.sql.DefaultSQLExceptionTranslator.translate(DefaultSQLExceptionTranslator.java:38)
at com.mysema.query.sql.Configuration.translate(Configuration.java:451)
at com.mysema.query.sql.dml.SQLDeleteClause.execute(SQLDeleteClause.java:169)
at com.atlassian.confluence.plugins.questions.internal.upgrade.DuplicatedAcceptedAnswersRemover.deleteDuplicatedAcceptedAnswers(DuplicatedAcceptedAnswersRemover.java:83)
...
at com.atlassian.activeobjects.internal.AbstractActiveObjectsFactory.create(AbstractActiveObjectsFactory.java:67)
at com.atlassian.activeobjects.internal.DelegatingActiveObjectsFactory.create(DelegatingActiveObjectsFactory.java:32)
at com.atlassian.activeobjects.osgi.TenantAwareActiveObjects$1$1$1.call(TenantAwareActiveObjects.java:91)
... 6 more
Caused by: java.sql.SQLException: You can't specify target table 'CONTENTPROPERTIES' for update in FROM clauseCause
This is a problem caused by MySQL 5.7 which has new rules related to syntax. From Supported Platforms, Confluence 5.9.x only supports MySQL 5.6.x and 5.5.x (not tested with 5.7).
Resolution
Migrate to MySQL 5.6 or 5.5
Updated on April 8, 2025
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