-Xmx
-Xms
XX:MaxPermSize

These properties are pre-existing. See related pages for instructions.

Increasing JIRA Memory

-XX:+PrintGCTimeStamps -verbose:gc -Xloggc:gc.log -XX:+HeapDumpOnOutOfMemoryError

Set these for Garbage Collection tuning.

Troubleshoot Jira Server performance with GC logs
Analyze OutofMemory errors in Jira server with Heap Dumps

-agentlib:yjpagent=onexit=memory,dir=/path/to/write/snapshots

[Archived] Profiling Memory and CPU Usage with YourKit

-Datlassian.mail.senddisabled
-Datlassian.mail.fetchdisabled
-Datlassian.mail.popdisabled

Set to 'true' to disable mail. In Linux setenv.sh, there is a pre-existing flag to uncomment.

Migrating JIRA to Another Server
Notifications Are Issued for Incorrect Jira Issues

-Dmail.debug

If set to "true", logs statements related to mail

Configuring JIRA's SMTP Mail Server to Send Notifications
Creating Issues and Comments from Email

-Dmail.mime.decodetext.strict

Unable to Decode Mail Subject or Body when Creating Issue From Email

-Dmail.imap.auth.plain.disable
-Dmail.imaps.auth.plain.disable

IMAP setup fails with AUTHENTICATE Failed error in logs in Jira server when using OAuth

-Dmail.imap.starttls.enable

'javax.mail.MessagingException No login methods supported' Due to IMAP over SSL

-Dmail.mime.decodeparameters

Sets mail handler to work correctly with emails from RFC 2231-compliant mail clients.

Installing JIRA WAR-EAR
JIRA 4.0 Upgrade Guide

-Dmail.smtp.localhost

Problems Sending Email from JIRA - EHLO requires domain address

-Dfile.encoding

Set to utf-8 for encoding consistency

Integrating JIRA with CVS and ViewCVS
Characters Not Supported by ASCII are Being Displayed as Question Marks
Troubleshoot character display issues in Jira server
Jira server throws SQL Exception while updating issues or importing data into MySQL due to encoding
International Characters in Notification Email Subject Lines Are Being Replaced with Question Mark

-Duser.timezone

Incorrect timestamps displayed in Jira server

-Dsvnkit.http.methods

Values include Basic,Digest,Negotiate,NTLM

JIRA Startup Fails Due to 'java.lang.SecurityException Unable to locate a login configuration'
Subversion Plugin Displays 'An unknown error occurred - actions == null' Due to SVN Authentication

-Dorg.apache.jasper.runtime.BodyContentImpl.LIMIT_BUFFER

false

(Archived) OutOfMemory Due to Tomcat Memory Leak
JRA-10145

-ea/-da

Enable/Disable assertions

java.lang.AssertionError When Sending Mail Via SMTP

-Djava.net.preferIPv4Stack

SocketException to Announce 'Invalid argument' for an Available Port

-Djavax.net.ssl.trustStore

Connecting to SSL services
Unable to Send Email 'javax.net.ssl.SSLException' Due to SMTP Server via SSL

-Djava.awt.headless

Ships with true by default. Allows thumbnail generation.

-Dhttp.proxyHost

-Dhttp.proxyPort