Atlassian JIRA is an issue and project tracking tool. Like Confluence, JIRA offers the ability to store its users and groups in its database. You can configure Confluence to look for its users and groups in the JIRA database. This page describes the legacy JIRA database connector, which provides a direct connection to the JIRA database.
When to use this option: Choose the legacy JIRA database connector if your JIRA server is JIRA 4.2 or earlier, for backwards compatibility with the already-existing option for Confluence to use JIRA for user management.
If you are using JIRA 4.3 or later, you cannot use the legacy JIRA database connector. Instead, choose the 'Atlassian JIRA' directory type.