How do I change Tomcat's temp folder path to another?

Issue

• How can the Tomcat temp folder path be changed to a different path?

Environment

• Liferay DXP 7.3

Resolution

• In order to configure Tomcat to use a different temp directory, users must first understand the java.io.tmpdir parameter value, which is currently set to$CATALINA BASE/tempin Tomcat.
  They can modify it by setting the $CATALINA TMPDIR environment variable before running Tomcat's startup.sh. 
  

  From catalina.sh:
  #   CATALINA_TMPDIR (Optional) Directory path location of temporary directory
  #                   the JVM should use (java.io.tmpdir). Defaults to
  #                   $CATALINA_BASE/temp.

• The steps that were taken to achieve the expected behavior of the temp folder in the specified path are as follows:
  1) Stopped the Liferay application
  2) Navigated to {liferay_home}\tomcat-9.0.53\bin (local test machine: Windows)
  3) Opened catalina.bat and modified the CATALINA_TMPDIR in this file

  if not "%CATALINA_TMPDIR%" == "" goto gotTmpdir
  set "CATALINA_TMPDIR=%D:\DXP7.3\DXP7.3\liferay-dxp-7.3%\temp"
  :gotTmpdir

  Previous was:

  if not "%CATALINA_TMPDIR%" == "" goto gotTmpdir
  set "CATALINA_TMPDIR=%CATALINA_BASE%\temp"
  :gotTmpdir

  4) Cleared all temp folders and restarted the application.

Additional Information

• The information in this article is focused on Tomcat, which is included in the Liferay bundle, however, there are some unofficial* articles that will provide more insight into it, and users can proceed at their discretion:
  
  • Environment variable to control java.io.tmpdir?
  • Change the default value of java.io.tmpdir
  • Configure Tomcat to use a different temp directory for file uploads
• In case of further input or assistance, users can consult their Infrastructure team or Liferay's separate channel called 'Global Service Team'.

*Unofficial articles are those that are not provided by Liferay but rather are found online while conducting research for a specific situation