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ForrestLi
Level 3
Dec 20, 2021 4:14 AM UTC
Solved

AEM Is Not Responsive

Hi All，

 

Every time I start AEM, AEM will not respond after a while.

 

This is what I am seeing in the monitoring page. It is showing the number of active sessions are growning.

http://localhost:4503/libs/granite/operations/content/monitoring/page.html

 

But I am not find a session leak in the JMX page.

http://localhost:4503/system/console/jmx

 

Does anyone know how or where can I find out what is causing this problem? 

 

When AEM is not responsive, error log is no longer produced. For example, if AEM is not resonsive in the 2021-12-21, you will find there is no error log file for 2021-12-21, other logs are work well, like request.log.2021-12-21.

 

AEM : 6.5.7.0

Environment : Windows 10

 

Thanks,

Forrest

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B_Sravan
B_SravanAccepted solution
New Participant
Dec 22, 2021 4:57 AM UTC

okay, please upgrade your Java version to 11. That should resolve your problem.
Thank you.

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9 replies

Sudharsan_Selv1
Level 2
Dec 29, 2021 11:21 AM UTC

 

Hi @forrestli 

Did you analyzed the threaddump? If you find deadlock in SCR Component Registry (refer below) then it is known issue in AEM 6.5.7 and this was addressed in Service Pack 8 or later (refer link [0]). Try upgrading service SP8 or later and see if that works. 

 

Deadlock in the SCR Component Registry when many threads are blocked due to org.apache.felix.scr.impl.ComponentRegistry timer. As a result, Experience Manager stops responding for an indefinite time (GRANITE-33125,FELIX-6252).

 

[0] https://experienceleague.adobe.com/docs/experience-manager-65/release-notes/service-pack/previous-hotfixes-featurepacks.html?lang=en#experience-manager-6580

 

Thanks

Sudharsan

 

 

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    ForrestLiAuthor
    Level 3
    Feb 22, 2022 7:51 AM UTC

    Thanks Sudharsan, the issue been fixed after I updated the service package to 6.5.11  

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    B_Sravan
    B_Sravan
    New Participant
    Dec 20, 2021 8:39 AM UTC

    Hi @forrestli, 

    May I know if this is a recent change after installing a service pack or something?
    Also, try changing the JAVA version (sometime back this helped me).
    Thank you.

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      ForrestLiAuthor
      Level 3
      Dec 22, 2021 2:34 AM UTC

      I recent upgrade the AEM from AEM 6.1 to AEM 6.5.

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        B_Sravan
        B_SravanAccepted solution
        New Participant
        Dec 22, 2021 4:57 AM UTC

        okay, please upgrade your Java version to 11. That should resolve your problem.
        Thank you.

        Translate
          milind_bachani
          milind_bachani
          Employee
          Dec 20, 2021 6:49 AM UTC

          Hi @forrestli , what are the params you are using to start the instance ?

          Try using -Xmx1024m -XX:MaxPermSize=256m while starting the instance.
          Probably you should see something in the error.org whenever the instance malfunctions.

          Thanks

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            ForrestLiAuthor
            Level 3
            Dec 20, 2021 7:18 AM UTC

            This is my params.

             

            java -Dcrx.debug.sessions=true -Dsun.arch.data.model=32 -XX:MaxPermSize=2048m -Xmx4096M -Xdebug -Xnoagent -Djava.compiler=NONE -Xrunjdwp:transport=dt_socket,address=8766,server=y,suspend=n -jar aem65-publish-p4503.jar -r publish localdev

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              manikanthar1295
              manikanthar1295
              Level 5
              Dec 20, 2021 5:10 AM UTC

              Hi,

               

              Can you check logs to find out the root cause of the issue.

               

              Regards

              Manikantha R

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                ForrestLiAuthor
                Level 3
                Dec 20, 2021 5:46 AM UTC

                There is no error in the log.

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