Middleware server variables and custom properties define properties for middleware servers, such as the maximum heap size for assisted lifecycle servers.
The SERVER_MAX_HEAP_SIZE variable defines the maximum heap size for assisted lifecycle servers. If the variable is not defined, the default maximum heap size value for the server type is used.
You can use wsadmin scripting to set the SERVER_MAX_HEAP_SIZE variable. You must use it to set the variable for Apache Tomcat, JBoss application servers, BEA WebLogic servers, and external WebSphere® Application Server. Follow the directions in the topic on modifying variables using wsadmin scripting.
To set the SERVER_MAX_HEAP_SIZE variable using the administrative console, click Servers > All servers > server_name > Variables. Specify the maximum heap size in megabytes.
When the excessive memory usage health policy is triggered for WebSphere Application Server Community Edition servers, the percentage of the heap size specified in the runtime task message is inaccurate.
Configure the maximum heap size for each WebSphere Application Server Community Edition server when you configure the excessive memory usage health policy for WebSphere Application Server Community Edition servers.
Set the SERVER_MAX_HEAP_SIZE variable at the server level. The default value is 64 MB.
In the administrative console, click
.For more information, read the topic on middleware server custom properties and variables.
gotchaServer type | Maximum heap size |
---|---|
JBoss | 512 MB |
Apache Tomcat | 64 MB |
WebSphere Application Server Community Edition | 64 MB |
BEA WebLogic | 400 MB |
The UseJMXSecureConnector custom property specifies whether Java Management Extensions (JMX) security is enabled for a WebSphere Application Server Community Edition Version 2.1 server or later server.
To enable JMX security, additional steps are required beyond setting the custom property. Read about the additional steps in the topic on Configuring JMX security for WebSphere Application Server Community Edition.
To set the UseJMXSecureConnector custom property, click
. Set the value to true to enable JMX security.Value | Description |
---|---|
Value | True or false |
Default | false |