How to increase memory in weblogic - weblogic

Question

I need to increase memory in weblogic. I am new in this and I dont know how. I need to set -Xss=4096k . How I can I do it ?

Answer 1

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

Answer 2

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

Answer 3

Go to setDomainEnv.
Search for the below comment.
#REM IF USER_MEM_ARGS the environment variable is set, use it to override ALL MEM_ARGS values
Paste the below line (3072 for 3GB).
set USER_MEM_ARGS=-Xms128m -Xmx3072m %MEM_DEV_ARGS% %MEM_MAX_PERM_SIZE%

Answer 4

Another way that is simpler is by using the setUserOverrides.sh script or creating one if none exists. See the example below
----setUserOverrides.sh script-----
#!/bin/bash
echo "Setting for UserOverrides.sh"
# global settings (for all managed servers)
export JAVA_OPTIONS="$JAVA_OPTIONS"
# customer settings for each Server
if [ "${SERVER_NAME}" = "AdminServer" ]
then
echo "Customizing ${SERVER_NAME}"
export JAVA_OPTIONS="$JAVA_OPTIONS -server -Xms2g -Xmx2g - Dweblogic.security.SSL.minimumProtocolVersion=TLSv1.1"
fi
if [ "${SERVER_NAME}" = "soa_server1" ]
then
echo "Customizing ${SERVER_NAME}"
export JAVA_OPTIONS="$JAVA_OPTIONS -client -Xms4g -Xmx4g - Dweblogic.security.SSL.minimumProtocolVersion=TLSv1.2"
fi
echo "End setting from UserOverrides.sh"