How to increase memory in weblogic

Xss is Thread Stack Size,, it is not the memory size

you can change the memory size by changing the parameters Xmx

the most important parameters are :

-Xms1536m -Xmx1536m -XX:MaxPermSize=512m

Xmx - is the max size of the heap.

Xms - is the initial size of the heap.( give it the same as Xmx )

XX:MaxPermSize - is is used to hold reflective of the VM itself such as class objects and method objects ( it's independent from the heap size,, give it the 1/3 to 1/4 of the Xms size depend in your classes size)

.........

Any Way:

you can change XSS from config.xml

in this path : DOMAIN_NAME/config/config.xml

but you have to shutdown the admin server when you change something in config.xml , then edit the start properties, or add it under <server> if it's not there:

<server-start>
      <arguments>-Xms1536m -Xmx1536m -XX:MaxPermSize=512m -Xss4096k </arguments>
</server-start>

........

[[OR]]

you can change it from the admin console which is easier

access the admin console then go to Environment >> Servers

choose the server you want to change it

form Configuration >> Server Start

you will see box called Arguments:

Add -Xss4096k

Options for the JVM must be set on startup so you need to modify the startup script for WebLogic.

See here:

http://docs.oracle.com/cd/E13222_01/wls/docs100/server_start/overview.html#JavaOptions