Getting An illegal reflective access operation has occurred warning - when installing AEM. | Community
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veemat1
Level 2
September 2, 2020
Solved

Getting An illegal reflective access operation has occurred warning - when installing AEM.

  • September 2, 2020
  • 4 replies
  • 14647 views

Hello All,

  When installing AEM 6.5 I am getting below warning.. what could be the cause?  - AEM 6.5 , Jdk 11.0.8-windows

 

java -server -XX:MaxPermSize=256m -Xmx1024M -jar aem-author-p4502.jar -r author, nosamplecontent
Java HotSpot(TM) 64-Bit Server VM warning: Ignoring option MaxPermSize; support was removed in 8.0
Loading quickstart properties: default
Loading quickstart properties: instance
Low-memory action set to fork
Using 64bit VM settings, min.heap=1024MB, min permgen=256MB, default fork arguments=[-Xmx1024m, -XX:MaxPermSize=256m]
The JVM reports a heap size of 1024 MB, meets our expectation of 1024 MB +/- 20
Setting properties from filename 'C:/Users/dev/aem-blank/author/aem-author-p4502.jar'
Option '-quickstart.server.port' set to '4502' from filename aem-author-p4502.jar
Setting 'sling.run.modes' to 'author,,nosamplecontent' from command line.
The admin password for this instance hasn't been defined yet.
Please enter the desired admin password:
Please re-enter password:
Verbose option not active, closing stdin and redirecting stdout and stderr
Redirecting stdout to ....
Redirecting stderr to ..
Press CTRL-C to shutdown the Quickstart server...
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.apache.felix.framework.ext.ClassPathExtenderFactory$DefaultClassLoaderExtender (file:/C:/Users/dev/aem-blank/author/crx-quickstart/launchpad/org.apache.sling.launchpad.base.jar.1599067529509) to method java.net.URLClassLoader.addURL(java.net.URL)
WARNING: Please consider reporting this to the maintainers of org.apache.felix.framework.ext.ClassPathExtenderFactory$DefaultClassLoaderExtender
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

 

Thanks

 

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    Best answer by bilal_ahmad

    Hello @veemat1 you may ignore these warning messages because they do not hamper any functionality of AEM. You may suppress the warnings. Thanks, Bilal.

    4 replies

    bilal_ahmad
    bilal_ahmadAccepted solution
    Level 5
    September 2, 2020

    Hello @veemat1 you may ignore these warning messages because they do not hamper any functionality of AEM. You may suppress the warnings. Thanks, Bilal.

      V
      veemat1Author
      Level 2
      September 2, 2020
      Thanks for your help. Yes install works, but not sure why so many warning.
        Nikhil-Kumar
        Community Advisor
        Nikhil-KumarCommunity Advisor
        Community Advisor
        September 3, 2020

        @veemat1 

        Warning will not hamper the overall working of AEM server. 
        Just verify some of it's basic functionality before building an end-to-end application.

        Thanks,
        Nikhil

          arunpatidar
          Community Advisor
          arunpatidarCommunity Advisor
          Community Advisor
          September 3, 2020

          I think these messages are due to JAVA 11

          These messages can be ignored because they do not impact the AEM use or functionality.

          Arun Patidar
            mohammeds537171
            mohammeds537171
            April 10, 2023

            Hi @arunpatidar 

             

            I am facing same issue, but AEM instance is not up and running. Because of above warning issue?

            Loading quickstart properties: default
            Loading quickstart properties: instance
            Low-memory action set to fork
            Using 64bit VM settings, min.heap=1024MB, min permgen=256MB, default fork arguments=[-Xmx1024m, -XX:MaxPermSize=256m]
            The JVM reports a heap size of 1024 MB, meets our expectation of 1024 MB +/- 20
            Setting properties from filename 'XXXXXXXXXXXXXXXX/Author/aem-author-p4502.jar'
            Option '-quickstart.server.port' set to '4502' from filename aem-author-p4502.jar
            Setting 'sling.run.modes' to 'XXXXXXXXXXX' from command line.

            Verbose option not active, closing stdin and redirecting stdout and stderr
            Redirecting stdout to C:\Users\XXXXXXX\Author\crx-quickstart\logs\stdout.log
            Redirecting stderr to C:\Users\XXXXXXXXXXXXXX\Author\crx-quickstart\logs\stderr.log
            Press CTRL-C to shutdown the Quickstart server...
            WARNING: An illegal reflective access operation has occurred
            WARNING: Illegal reflective access by org.apache.felix.framework.ext.ClassPathExtenderFactory$DefaultClassLoaderExtender (file:/C:/Users/XXXXXXXXX/Author/crx-quickstart/launchpad/org.apache.sling.launchpad.base.jar) to method java.net.URLClassLoader.addURL(java.net.URL)
            WARNING: Please consider reporting this to the maintainers of org.apache.felix.framework.ext.ClassPathExtenderFactory$DefaultClassLoaderExtender
            WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
            WARNING: All illegal access operations will be denied in a future release

             



              arunpatidar
              Community Advisor
              arunpatidarCommunity Advisor
              Community Advisor
              April 10, 2023

              Hi

              The AEM is started and running and you are getting 500 error.

              Could you please check the error logs?

              Arun Patidar
                Love_Sharma
                Love_Sharma
                Level 4
                February 26, 2024

                Hello community,

                 

                For future visitors, when this happened with me, after warnings my start up process was getting terminated. So my AEM was not starting even after warnings. 

                I deleted my quickstart folder and ran java -jar aem-author-p4502.jar command and it worked. My AEM started with the warnings. Only issue here is if you have huge content already deployed to your instance will be gone.

                 

                Thanks

                Love Sharma

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