How to determine your version of Tomcat and Java
Platform Notice: Data Center Only - This article only applies to Atlassian apps on the Data Center platform.
Note that this KB was created for the Data Center version of the product. Data Center KBs for non-Data-Center-specific features may also work for Server versions of the product, however they have not been tested. Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Summary
The commands on this page will allow you to determine the version of Tomcat that your instance is using. It will also allow you to check the version of Java is being used to create a JVM.
Solution
Run the appropriate command for your OS from your <application-install> or <tomcat-install> directory:
ℹ️ If java is not on your PATH, prefix the command with the full path to your <java-home>/bin/ directory.
Linux or macOS:
java -cp lib/catalina.jar org.apache.catalina.util.ServerInfoWindows:
java.exe -cp lib\catalina.jar org.apache.catalina.util.ServerInfoThe output should be similar to this:
Server version: SpringSource tc Runtime/2.0.4.RELEASE
Server built: August 3 2010 0710
Server number: 6.0.28.29
OS Name: Linux
OS Version: 2.6.18-194.11.1.el5
Architecture: i386
JVM Version: 1.6.0_21-b06
JVM Vendor: Sun Microsystems Inc.How to read the output:
Server number — the Tomcat version (e.g.
9.0.65.0).JVM Version — the Java runtime version (e.g.
11.0.16).JVM Vendor — the Java distribution (Oracle, OpenJDK, Adoptium, Azul, etc.).
The Server version line shows the Tomcat build / distribution string; the Server number below it is the canonical Tomcat version number you should reference when checking compatibility.
Where to find this without running commands:
If you can access the Confluence admin UI, you can also find both versions at Administration (cog icon) → General Configuration → System Information
Java Version and Java Vendor are shown under the "Java" section.
Application Server shows the Tomcat version.
Use the command-line method when the application won't start or you don't have admin UI access.
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