How to delete/clear the plugin's cache in JIRA Server?

Clearing the Confluence cache is documented by Atlassian, but not doing the same thing in JIRA. How can that be done?

To delete/clear the JIRA plugin cache if you get random plugin behaviour:

  1. Stop the JIRA instance
  2. Delete JIRA_HOME/plugins/.bundled-plugins and JIRA_HOME/plugins/.osgi-plugins (just these two)
  3. Restart JIRA

To completely clear all caches you have to do the following 4 steps:

  1. Shut down your JIRA
  2. Clear your cache. To do this, first access your JIRA installation directory. There, access the ‘Work’ folder. Delete the contents of the folder. DO NOT DELETE THE WORK FOLDER. Only delete the contents.
  3. Clear your plugin cache. To do this, access your JIRA Home folder. There, access the ‘Plugins’ folder. Delete the ‘.osgi-plugins’ and the ‘.bundled-plugins’ folders. Not to worry, these 2 folders will be rebuilt when JIRA starts
  4. Startup your JIRA
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