AppSync: Unable to launch appsync-cli.sh on Linux

Summary: Issue is with Java version or Java class.

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Symptoms

When running the AppSync CLI to log in like so:
 
[root@hostname appsync]# ./appsync-cli.sh -login server="FQDN-of-AppSync-Server" port=8445 user=admin password="N@tRealPass1"

The following error is returned:
 
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/cli/ParseException
        at java.lang.Class.getDeclaredMethods0(Native Method)
        at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
        at java.lang.Class.privateGetMethodRecursive(Class.java:3048)
        at java.lang.Class.getMethod0(Class.java:3018)
        at java.lang.Class.getMethod(Class.java:1784)
        at sun.launcher.LauncherHelper.validateMainClass(LauncherHelper.java:650)
        at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:632)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.cli.ParseException
        at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:352)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
        ... 7 more

Cause

Java 8 was found to be installed on the host, which is below the required version.

Resolution

Ensure that the supported version of Java is installed on the Linux Host.

Additional Information

See the AppSync User Guide to review all pre-requisite items for the AppSync CLI when run on Linux.

For AppSync 4.2.0.0, Java 11 is required per page 21 of the AppSync 4.2 User Guide which states:     
 
Java Runtime Environment (JRE) version 11 - must be installed and available in path.
 
It is also prudent to ensure the customer defined AppSync CLI folder on the Linux host contains the CLI from the current running AppSync Server version. It is possible the AppSync Server was upgraded one or more times since the AppSync CLI was originally copied over to the Linux host.
 

Products

AppSync
Article Properties
Article Number: 000187282
Article Type: Solution
Last Modified: 10 Sep 2025
Version:  5
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