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Increasing the Heap Size of the Weblogic JVM

August 22, 2010

There  are 2 different type of servers in Weblogic Server

1. Admin Server

2. Managed Server

Increasing JVM Size of Admin Server

JVM size of Admin server can be increased by changing Xmx and Xms  values in setDomainEnv.sh which is located in $MW_HOME/user_projects/domains/<Domain>/bin

There are two blocks for XMX and XMS in setDomainEnv.sh. Depending up on type of JVM make changes in second block. Below I changed the value of XMX and XMS of 64 Bit SUN Java to 2048 and 1024.

XMS_SUN_64BIT=”256″
export XMS_SUN_64BIT
XMS_SUN_32BIT=”256″
export XMS_SUN_32BIT
XMX_SUN_64BIT=”512″
export XMX_SUN_64BIT
XMX_SUN_32BIT=”512″
export XMX_SUN_32BIT
XMS_JROCKIT_64BIT=”256″
export XMS_JROCKIT_64BIT
XMS_JROCKIT_32BIT=”256″
export XMS_JROCKIT_32BIT
XMX_JROCKIT_64BIT=”512″
export XMX_JROCKIT_64BIT
XMX_JROCKIT_32BIT=”512″
export XMX_JROCKIT_32BIT

XMS_SUN_64BIT=”1024″
export XMS_SUN_64BIT
XMS_SUN_32BIT=”512″
export XMS_SUN_32BIT
XMX_SUN_64BIT=”2048″
export XMX_SUN_64BIT
XMX_SUN_32BIT=”1024″
export XMX_SUN_32BIT
XMS_JROCKIT_64BIT=”512″
export XMS_JROCKIT_64BIT
XMS_JROCKIT_32BIT=”512″
export XMS_JROCKIT_32BIT
XMX_JROCKIT_64BIT=”1024″
export XMX_JROCKIT_64BIT
XMX_JROCKIT_32BIT=”1024″
export XMX_JROCKIT_32BIT

Increasing JVM Size of Managed Server

JVM size of Managed Server  can  be increased from Weblogic console. This can be achieved  by adding Xmx and Xms values   start tab in Managed server shown as below

Servers>>Server-0>>Start  Tab>> Arguments

Related Links

1. Weblogic Server Installation

2. Weblogic Server Clustering

3. Configuring  Oracle Single Sign-on for Weblogic Server

4. Weblogic Server Administrator password

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