How to change the minimum and maximum heap size in WebSphere

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To change the heap size.

  1. Sign into the WebSphere web console.
  2. In the left panel, expand Servers > Server Types, and select WebSphere application servers.
  3. Select the application server.
  4. Expand Java and Process Management and select Process definition.
  5. Select Java Virtual Machine.
  6. Update the Initial heap size and/or Maximum heap size.
  7. Select Apply.
  8. Select Save.

Restart the application server for the change to take effect.

  1. Sign into the WebSphere web console.
  2. In the left panel, expand Servers > Server Types, and select WebSphere application servers.
  3. Check the application server and select Restart.


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