JIRA Server Administration - JIRA 6.x Administration Topic - page 24

How to do it…
To migrate an existing JIRA to another server, perform the following steps:
1. Download and install a brand new JIRA instance in your new environment with an
empty database.
2. Take your current JIRA offline.
3. Back up your current JIRA database with its native backup utility.
4. Back up your current JIRA_HOME directory.
5. Take your new JIRA offline.
6. Copy over your JIRA_HOME backup and replace the new JIRA_HOME directory
with it.
7. Update the dbconfig.xml file with the new JIRA database details.
8. Copy your database backup and restore the new JIRA database.
9. Start up the new JIRA.
Note
If you have made modifications to your JIRA configuration files, you can get a
complete list of the modified files from JIRA's System Info page.
10. Log in to JIRA as a JIRA administrator.
11. Select System Info from the Administration panel.
12. Note down the files listed in the Modified Files and Removed Files sections.
13. Review and apply the same changes to the new JIRA instance.
The following screenshot shows how the output will look: