How do I check my heap utilization in WebLogic?
The size is set in the setDomainEnv.sh file for Linux or setDomainEnv. cmd for Windows, which is in the $DOMAIN_HOME/bin directory….Checking Heap Usage:
- Expand your WebLogic domain then expand Servers.
- Click the server you intend to monitor.
- Select the Monitoring tab, and the Performance sub-tab.
What is the default heap size max and minimum in WebLogic?
Default. The default initial heap size is 16 MB if maximum -Xmx is less than 128 MB; otherwise it is 25% of available physical memory up to, but not exceeding, 64 MB.
What should my heap size be?
For a 64-bit JVM, a Java Heap size of 3 GB or 4 GB per JVM process is usually my recommended starting point. Your business traffic will typically dictate your dynamic memory footprint.
How do I check my heap utilization?
You can verify that the JVM is using the increased Java heap space:
- Open a terminal window.
- Enter the following command: ps -ef | grep java | grep Xmx.
- Review the command output.
What is WebLogic heap size?
The default JVM heap size for WebLogic is 3GB. The size is set in the setDomainEnv.sh file for Linux or setDomainEnv. cmd for Windows, which is in the $DOMAIN_HOME/bin directory. The heap size is set with the -Xmx option.
How do I increase my WebLogic memory?
Open the startWebLogic script file. Find the following line and alter the values to suit your server usage. You can override the default heap size by using the -Xms and -Xmx switches to specify the initial and maximum sizes. This example also sets the permanent generation heap to a maximum value of 128 MB.
How much memory is my Java process using?
Many commands can check the memory utilization of JAVA processes, for example, pmap, ps, jmap, jstat….
- ps and pmap can show total reserved memory from OS.
- jmap and jstat can show used space of heap&stack.
- jmap -histo can show top heap memory objects.