Web Viewer for Windows 12.1 java.lang.OutOfMemoryError: Java heap space
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Article ID: 4210
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Updated On:
Products
CA Output Management Web Viewer
Issue/Introduction
Web Viewer 12.1 users are getting an error page. localhost.log shows this error: java.lang.OutOfMemoryError: Java heap space.
Cause
Out of Memory Condition
Environment
Microsoft Windows Server, Tomcat running as a Windows Service
Resolution
Resolve this problem by increasing the amount of memory for Tomcat. If you are running Tomcat as a service, use the tomcat8w utility (name varies with the version of Tomcat)
Determine how much memory is on your Windows box.
Are there any other applications running on this box except for Web Viewer and Tomcat?
Bring up the Tomcat Manager to view the amount of memory you have available.
Select the Server Status Tab
Look under the JVM tab
You will see something like this:
Free memory: 83.36 MB Total memory: 174.50 MB Max memory: 228.00 MB
Generally you should allow no more than half of the available RAM for the operating system and other overhead and the rest should be available for Tomcat and Web Viewer.
For example, with a server that has 12 Gig available, you could specify up to 6 Gig for Tomcat.
Increasing the amount of memory for Tomcat with tomcat8w
Modify accordingly for other versions of Tomcat.
From the Administrator Command Prompt, change into C:\Program Files\CA\CA_OM_Web_Viewer\apache-tomcat-8.5.4\bin (for example)
Run the command tomcat8w //ES//Tomcat8forCAOMWebViewer12
This brings up the Tomcat Gui so you can modify the properties
Select the Java tab
For the Maximum memory pool, enter the new heap size. It should be at least 4096 (4 Gig). Optimally it can be 8192 (8 Gig).
Click Apply OK
If you do not have at least 4096 available for the heap size, you will need to add more memory to your server.