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A
ArchanaVijayakumar
June 24, 2020
Solved

Fatal Error: ClassNotFoundException

  • June 24, 2020
  • 4 replies
  • 3901 views

When execute the AEM jar via command prompt using 

"java -Xmx5130m -jar <path>\aem-author-4502.jar -gui"

 

it shows the below error dialog box 

 

 

 

 

But when I run the jar by double clicking it works fine.
Can anyone facing the same before or any solution to overcome this.?

 

Java version 8

AEM jar version 6.4

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Best answer by leoberliant

Your current execution includes a path D:/AEM-Jar/author/aem-author-4502.jar

Can you switch to D:/AEM-Jar/author/ and run the execution command from that path?

 

4 replies

Vaibhavi_J
Vaibhavi_J
Level 7
June 24, 2020

Hi @archanavijayakumar 

 

I believe you have followed the technical requirements listed here. https://docs.adobe.com/docs/en/aem/6-1/deploy/technical-requirements.html#Virtual%20&%20Cloud%20Computing%20Environments

Difference I can notice in your scenario with the command line startup and double clicking jar is maxheap size allocation. 

Can you please try this below solutions:

1.Remove the -Xmx param and try to run the jar. (This will pick the standard heapsize. Suggesting this to know if the issue is due to heapsize allowcation in the system). 

2. Please check the stderr.log. you should see the errors related to startup here. 

    A
    ArchanaVijayakumarAuthor
    June 24, 2020

    I'm facing the same err after removing Xmx param from the command and also I have included the error log details

     

    @vaibhavi_j 


    Low-memory action set to fork
    Using 64bit VM settings, min.heap=1024MB, min permgen=256MB, default fork arguments=[-Xmx1024m, -XX:MaxPermSize=256m]
    **** WARNING: insufficent heap memory ******************************************
    The JVM reports 910 MB but we recommend at least 1024 MB +/- 20
    Use your JVM's heap size option (like -Xmx1024M) to set that size.
    Will fork a JVM to get enough memory.
    ********************************************************************************
    No console, will fork to get enough memory
    Not forking JVM as -nofork option is set
    Setting properties from filename 'D:/AEM-Jar/author/aem-author-4502.jar'
    Option '-quickstart.server.port' set to '4502' from filename aem-author-4502.jar
    Verbose option not active, closing stdin and redirecting stdout and stderr
    Redirecting stdout to D:\AEM-Jar\author\crx-quickstart\logs\stdout.log
    Redirecting stderr to D:\AEM-Jar\author\crx-quickstart\logs\stderr.log
    ResourceProvider paths=[/gui, /gui/default]
    loadProperties: found /gui/default/gui.properties
    loadProperties: found /gui/gui.properties
    getResourceURL: found /gui/cq55icon_round_WIN_512x512.gif
    getResourceURL: found /gui/cq55icon_round_WIN_256x256.gif
    getResourceURL: found /gui/cq55icon_round_WIN_128x128.gif
    getResourceURL: found /gui/cq55icon_round_WIN_64x64.gif
    getResourceURL: found /gui/cq55icon_round_WIN_48x48.gif
    getResourceURL: found /gui/cq55icon_round_WIN_32x32.gif
    getResourceURL: found /gui/cq55icon_round_WIN_16x16_block.gif
    getResourceURL: found /gui/gui_bg_start.png
    getResourceURL: found /gui/gui_bg_on_blank.png
    getResourceURL: found /gui/gui_bg_off.png
    RAWProcessor succesfully installed
    Opening browser using cmd=rundll32 url.dll,FileProtocolHandler "http://localhost:4502/"
    Startup time:71 seconds
    http://localhost:4502/
    Quickstart started
    Exception in thread "sling-oak-5" java.lang.NullPointerException
    at org.apache.sling.commons.threads.impl.DefaultThreadPool$LoggingThreadLocalChangeListener.changed(DefaultThreadPool.java:172)
    at org.apache.sling.commons.threads.impl.ThreadLocalCleaner.changed(ThreadLocalCleaner.java:210)
    at org.apache.sling.commons.threads.impl.ThreadLocalCleaner.diff(ThreadLocalCleaner.java:173)
    at org.apache.sling.commons.threads.impl.ThreadLocalCleaner.cleanup(ThreadLocalCleaner.java:148)
    at org.apache.sling.commons.threads.impl.ThreadPoolExecutorCleaningThreadLocals.afterExecute(ThreadPoolExecutorCleaningThreadLocals.java:75)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
    Exception in thread "sling-oak-2" java.lang.NullPointerException
    at org.apache.sling.commons.threads.impl.DefaultThreadPool$LoggingThreadLocalChangeListener.changed(DefaultThreadPool.java:172)
    at org.apache.sling.commons.threads.impl.ThreadLocalCleaner.changed(ThreadLocalCleaner.java:210)
    at org.apache.sling.commons.threads.impl.ThreadLocalCleaner.diff(ThreadLocalCleaner.java:173)
    at org.apache.sling.commons.threads.impl.ThreadLocalCleaner.cleanup(ThreadLocalCleaner.java:148)
    at org.apache.sling.commons.threads.impl.ThreadPoolExecutorCleaningThreadLocals.afterExecute(ThreadPoolExecutorCleaningThreadLocals.java:75)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
    CHILD process: shutdown hook
    CHILD process: exiting

    Varun_Shakya
    Community Advisor
    Varun_ShakyaCommunity Advisor
    Community Advisor
    June 24, 2020

    Try this 

    java -XX:MaxPermSize=256m -Xmx1024M -jar <Name of jar file>

      vanegi
      Adobe Employee
      vanegiAdobe Employee
      Adobe Employee
      June 24, 2020

      Hi Archana,

      After reviewing the exception logs which is complaining about the insufficient heap size, it is advised that your allocated heap does not exceed 50% of your total RAM. Having said that if you have 2P GB RAM, increasing to -XmxPG should be okay. 

       

      To fix the error, it is recommended to increase -Xmx depending on the instance RAM size as calculated above.

       

      Hope this helps!!

       

      Thanks,

      Vaishali

        L
        Adobe Employee
        leoberliantAdobe EmployeeAccepted solution
        Adobe Employee
        June 24, 2020

        Your current execution includes a path D:/AEM-Jar/author/aem-author-4502.jar

        Can you switch to D:/AEM-Jar/author/ and run the execution command from that path?

         

          A
          ArchanaVijayakumarAuthor
          June 25, 2020
          @leoberliant This Works.. Thanks .. !!!
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