By default, Jira is set to use a maximum of 768 MB of memory. For a production deployment, you might need to increase the amount of memory allocated to Jira. You can increase this by opening up the setenv.sh (on Linux) or setenv.bat (on Windows) files in the JIRA_INSTALL/bin directory and changing the value of the JVM_MAXIMUM_MEMORY parameter.

For example, if we want to set the maximum memory to 2 GB, we will change it to JVM_MAXIMUM_MEMORY="2048m". You will need to restart Jira after performing this change. For production uses, it is recommended that you allocate at least 4 GB (4096 MB) of memory to the Jira JVM. Make sure you have sufficient physical memory available on your server first.

If you are using LDAP for user management in your organization, refer to the Integrating with LDAP for authentication only recipe in Chapter 4, User Management.