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H
HK_102854958-Gravel
8-Gravel
August 5, 2025
Solved

Windchil Heap Memory shortage problem (with Garbage Collector)

  • August 5, 2025
  • 1 reply
  • 351 views

Version: Windchill 12.0

 

Use Case: Recently I've been experiencing a Heap Memory shortage situation on my Windchill Method Server.


Description:

Recently I've been experiencing a Heap Memory shortage situation on my Windchill Method Server.
To address this situation, we increased memory and added heap memory. However, the garbage collection rate and heap memory usage continue to increase, resulting in errors in use.
It's difficult to understand why this issue persists despite no significant changes to the Windchill system or significant changes in the number of users. Could this be due to a sudden garbage collector issue?

Best answer by avillanueva

Explain a bit more about what you are seeing. When you restart, does it work for a while then suddenly (randomly) spike up and consume memory? Or is it slowly building upon each startup until it reaches its limit? There are tools available in server status or the JMX admin that can show you memory usages as a graph to help isolate the issue. I am trying to see if this is related to a user action or a queue job that is misbehaving. What do you have set for your query limit to the database? It could be that a user is asking to boil the ocean and there are no limits in place. The server status page on the site utilities would be a good place to start as you should see things flashing red. Lastly, how good is the system tuned? Did you run the WCA initially? https://www.ptc.com/en/support/article/CS153338?source=search

 

1 reply

avillanueva
23-Emerald I
avillanueva23-Emerald IAnswer
23-Emerald I
August 5, 2025

Explain a bit more about what you are seeing. When you restart, does it work for a while then suddenly (randomly) spike up and consume memory? Or is it slowly building upon each startup until it reaches its limit? There are tools available in server status or the JMX admin that can show you memory usages as a graph to help isolate the issue. I am trying to see if this is related to a user action or a queue job that is misbehaving. What do you have set for your query limit to the database? It could be that a user is asking to boil the ocean and there are no limits in place. The server status page on the site utilities would be a good place to start as you should see things flashing red. Lastly, how good is the system tuned? Did you run the WCA initially? https://www.ptc.com/en/support/article/CS153338?source=search

 

    H
    HK_102854958-GravelAuthor
    8-Gravel
    August 5, 2025

    Hello avillanueva.

     

    Thank u for your interest about my problem and article shared.

     

    I found the problem that our custom source have unnecessary searching logic.

     

    Unnecessary searching logic make memory leak.

     

    So, i fixed and solved. 

     

    Thank you.

     

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