JIRA Agile Fails to Upgrade when running JIRA with Java Version 6
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
Summary
Problem
When an attempt to upgrade JIRA Agile to version 6.7.6 or higher, the upgrade fails and the plugin does not start.
When accessing the JIRA Agile add-on in the Universal Plugin Manager, a warning banner is shown stating: This add-on couldn't be loaded. It has one or more errors that prevent it from beiong enabled
The JIRA Agile Add-On can not be enabled.
The following appears in the atlassian-jira.log
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2015-07-07 10:10:10,010 ThreadPoolAsyncTaskExecutor::Thread 27 ERROR superman 1015x562510x2 196e3wr 10.10.10.10 /rest/plugins/1.0/installed-marketplace [plugin.osgi.factory.OsgiPlugin] Unable to start the plugin container for plugin com.pyxis.greenhopper.jira
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'tx-annotation-processor' defined in URL [bundle://161.0:0/META-INF/spring/atlassian-plugins-components.xml]: Unsatisfied dependency expressed through constructor argument with index 0 of type [com.atlassian.activeobjects.external.ActiveObjects]: : Error loading class [com.atlassian.pocketknife.spi.querydsl.DefaultDialectConfiguration] for bean with name 'defaultDialectConfiguration' defined in URL [bundle://161.0:1/com/atlassian/pocketknife/spi/querydsl/DefaultDialectConfiguration.class]: problem with class file or dependent class; nested exception is java.lang.UnsupportedClassVersionError: com/atlassian/pocketknife/spi/querydsl/DefaultDialectConfiguration : Unsupported major.minor version 51.0; nested exception is org.springframework.beans.factory.CannotLoadBeanClassException: Error loading class [com.atlassian.pocketknife.spi.querydsl.DefaultDialectConfiguration] for bean with name 'defaultDialectConfiguration' defined in URL [bundle://161.0:1/com/atlassian/pocketknife/spi/querydsl/DefaultDialectConfiguration.class]: problem with class file or dependent class; nested exception is java.lang.UnsupportedClassVersionError: com/atlassian/pocketknife/spi/querydsl/DefaultDialectConfiguration : Unsupported major.minor version 51.0Diagnosis
Environment
Running on an unsupported version of Java as per Supported Platforms for your specific version of JIRA.
Diagnostic Steps
Check the
atlassian-jira.logfor errors revering toUnsupported major.minor version 51.0Reviewing the System > System Info, Under Java Version page indicates a version of JIRA lower than Java 1.7.0 (For example 1.6.0_25)
Cause
Recent versions versions of JIRA are not supported to run on Java 6. See:|Supported Platforms. Specifically the error message: Unsupported major.minor version 51.0. indicates that the new source code in the Add-On requires Java version 7 or higher to run.
Solution
Workaround
If you are unable to Upgrade JIRA to a Supported version, to get JIRA Agile to work, you will need to downgrade JIRA Agile to an older version. (Such as JIRA Agile 6.6.80).
Uninstall the JIRA Agile Plugin from the Universal Plugin Manager. (See: Uninstalling apps)
Install an older version of JIRA Agile by Uploading a previous version.
Resolution
Download and install a more recent version of Java 7, or even better Java 8. Check your JIRA Version's Supported Platforms to confirm which version should be installed.
Update the Java Version being used as per: How to Use System JRE Instead of Embedded JRE.
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