Issue Summary

This issue was cloned from the Confluence bug as this is also impacting Jira.

After upgrade to ATST plugin version 2.18.0 or 3.11.0 Jira is encountering performance issues along with OOM exceptions causing the application to crash

Jira 10.3.21 has ATST 2.18.0 bundled.
Jira 11.3.6 has ATST 3.11.0 bundled.

Steps to Reproduce

1. Install Jira version 10.3.21 or Jira 11.3.6
2. Wait for the DCDP diagnostics transfer job to run

Expected Results

• DCDP diagnostics transfer job runs without issues

Actual Results

DCDP diagnostics transfer job failing with OOM exceptions

2026-04-28 04:14:06,208 ERROR [Caesium-1-2] [scheduler.caesium.impl.SchedulerQueueWorker] executeJob Unhandled exception thrown by job QueuedJob[jobId=DcdpTransferJob,deadline=1777339636941]
java.lang.OutOfMemoryError: Java heap space 

Workaround

Apply one of the following workarounds:

Workaround 1: Upgrade to a fixed version of the "Atlassian Troubleshooting and Support Tools" app:

1. Visit Jira Admin -> Manage Apps, and update to a fixed version of the app:
   • For Jira 11: 3.12.0 or above
   • For Jira 10: 2.19.1 or above

Workaround 2: Disable just the DCDP security metric collection via a dark feature:

1. Log in as a Jira admin.
2. Go to: <baseURL>/secure/admin/SiteDarkFeatures!default.jspa
3. In Enable dark feature, add:

   com.atlassian.troubleshooting.dcdp.security.metric.collection.disabled 

4. Confirm it appears in the list of enabled dark features.

Workaround 3: Disable just the DCDP security metric collection via a system property:

1. Add the following System Property to each node:

   -Datlassian.darkfeature.com.atlassian.troubleshooting.dcdp.security.metric.collection.enabled=false 

2. Rolling restart each Jira node