Problem

I have installed Websphere Application Server (WAS) on a new server and configured it after that I realized that the Websphere Application Server DMGR console (WebSphere Integrated Solutions Console) is responding very slowly or you can say that it was not accessible. When I tried to open the Websphere Application Server DMGR console browser it shows that the page can not be displayed. After restarting the DMGR console through the command line it worked for a few hours and after that again become not accessible.

DMGR: Deployment Manager

Environment:

• Server: HP-UX 11.31
• WebSphere Application Server version 8.5.5.12

Reason

When I checked the utilization of the server I found that the java process running corresponding to DMGR was consuming too much CPU and RAM. This problem was due to the heap size of the Deployment Manager (DMGR), when I checked the configuration I found that heap size was not defined for the Deployment Manager (DMGR).

Solution

• Log in to WebSphere Integrated Solutions Console
• Go to System administration > Java and Process Management > Deployment manager > Process definition > Java Virtual Machine
• Set the values for the Initial Heap Size and Max Heap Size (I set the values for these two 512 MB and 1024 MB respectively).
• Restart the Deployment Manager (DMGR).

The above solution resolved my problem.