Installed the Atlassian SDK on a Ubuntu 12.04 LTS System 76 notebook with 1.9GB RAM. Unit might need more RAM or there may be some config settings that can fix Jira not starting when I use the URL: http://waltubuntu:2990/jira/
Here is the error that is thrown. I have attached the logs for your review.
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The following plugins are required by JIRA, but have not been started:
Atlassian JIRA - Plugins - Project Config Plugin (com.atlassian.jira.jira-project-config-plugin)
Atlassian OAuth Admin Plugin (com.atlassian.oauth.admin)
Embedded Gadgets Plugin (com.atlassian.gadgets.embedded)
Gadget Dashboard Plugin (com.atlassian.gadgets.dashboard)
Atlassian JIRA - Plugins - Look And Feel Logo Upload Plugin (com.atlassian.jira.lookandfeel)
Atlassian REST - Module Types (com.atlassian.plugins.rest.atlassian-rest-module)
Gadget Spec Publisher Plugin (com.atlassian.gadgets.publisher)
Atlassian JIRA - Plugins - REST Plugin (com.atlassian.jira.rest)
Atlassian OAuth Service Provider Plugin (com.atlassian.oauth.serviceprovider)
Atlassian OAuth Consumer Plugin (com.atlassian.oauth.consumer)
Opensocial Plugin (com.atlassian.gadgets.opensocial)
Gadget Directory Plugin (com.atlassian.gadgets.directory)
Atlassian JIRA - Plugins - SAL Plugin (com.atlassian.sal.jira)
Atlassian JIRA - Plugins - Gadgets Plugin (com.atlassian.jira.gadgets)