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Setting generic JVM arguments in WebSphere Application Server

Troubleshooting


Problem

This technote explains where one can set generic Java™ Virtual Machine (JVM) arguments in the administration console for WebSphere Application Server.

Resolving The Problem

The generic JVM arguments are used to configure and adjust how the JVM executes. Once changes are made and saved to the master configuration, the JVM requires a restart for the arguments to take effect.

NOTE: Setting JVM arguments on the WebSphere Application Server Liberty has different steps.

 


How to Insert or Append JVM Arguments


 

Each JVM argument is separated by a space. This is also called it's delimiter.

For example, if presented with these two JVM arguments to add to an already full list of arguments:


-Xrs
-Xint

You would apply each argument individually, separating each with a space.

  • [other arguments] -Xrs -Xint [other arguments]
  




WebSphere Application Server V8.0, 8.5.X, and 9.0
NOTE: WebSphere Application Server Liberty has different steps
 
  • Application Server
    1. In the Administration Console select Servers
    2. Expand Server Type and select WebSphere application servers
    3. Click on the name of your server
    4. Expand Java and Process Management and select Process Definition.
    5. Under the Additional Properties section, click Java Virtual Machine.
    6. Scroll down and locate the textbox for Generic JVM arguments.
     

    Nodeagent

    1. In the Administration Console, select System Administration
    2. Select Node agents
    3. Choose which nodeagent to edit
    4. In the Server Infrastructure section, expand Java and Process Management and select Process Definition.
    5. Under the Additional Properties section, click Java Virtual Machine.
    6. Scroll down and locate the textbox for Generic JVM arguments.
     

    Deployment Manager

    1. In the Administration Console, select System Administration
    2. Select Deployment manager
    3. In the Server Infrastructure section, expand Java and Process Management and select Process Definition.
    4. Under the Additional Properties section, click Java Virtual Machine.
    5. Scroll down and locate the textbox for Generic JVM arguments.





    •  




WebSphere Application Server V7.0


 
  • Application Server
    1. In the Administration Console select Servers
    2. Expand Server Type and select WebSphere application servers
    3. Click on the name of your server
    4. Expand Java and Process Management and select Process Definition.
    5. Under the Additional Properties section, click Java Virtual Machine.
    6. Scroll down and locate the textbox for Generic JVM arguments.
     

    Nodeagent

    1. In the Administration Console, select System Administration
    2. Select Node agents
    3. Choose which nodeagent to edit
    4. In the Server Infrastructure section, expand Java and Process Management and select Process Definition.
    5. Under the Additional Properties section, click Java Virtual Machine.
    6. Scroll down and locate the textbox for Generic JVM arguments.
     

    Deployment Manager

    1. In the Administration Console, select System Administration
    2. Select Deployment manager
    3. In the Server Infrastructure section, expand Java and Process Management and select Process Definition.
    4. Under the Additional Properties section, click Java Virtual Machine.
    5. Scroll down and locate the textbox for Generic JVM arguments.

    •  
Examples of JVM arguments:
To Override Default TLS : -Dcom.ibm.jsse2.overrideDefaultTLS=true
To Increase heap size to 1G :  -Xmx1G






     
 


 

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Document Information

Modified date:
12 December 2019

UID

swg21417365

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