https://community.hpe.com/t5/server-management-systems/sim-6-3-java-out-of-memory-errors/m-p/4796277#M43887 I would check first if your mxdomainmgr has a memory leak. 1 - 4 GB of virtual memory should be available. The log files will give you also a good indication if you have a special problem. How many managed systems do you have?<BR /><BR /> Wed, 08 Jun 2011 17:33:36 GMT BPE 2011-06-08T17:33:36Z https://community.hpe.com/t5/server-management-systems/sim-6-3-java-out-of-memory-errors/m-p/4796276#M43886 gettings these on SIM after running for a week<BR /><BR />mxdomainmgr(error): Received remote RMI exception: Error occurred in server thread; nested exception is: <BR /> java.lang.OutOfMemoryError: Java heap space.<BR /><BR />Anyone else getting them? Tue, 07 Jun 2011 09:40:05 GMT https://community.hpe.com/t5/server-management-systems/sim-6-3-java-out-of-memory-errors/m-p/4796276#M43886 shocko 2011-06-07T09:40:05Z https://community.hpe.com/t5/server-management-systems/sim-6-3-java-out-of-memory-errors/m-p/4796277#M43887 I would check first if your mxdomainmgr has a memory leak. 1 - 4 GB of virtual memory should be available. The log files will give you also a good indication if you have a special problem. How many managed systems do you have?<BR /><BR /> Wed, 08 Jun 2011 17:33:36 GMT https://community.hpe.com/t5/server-management-systems/sim-6-3-java-out-of-memory-errors/m-p/4796277#M43887 BPE 2011-06-08T17:33:36Z https://community.hpe.com/t5/server-management-systems/sim-6-3-java-out-of-memory-errors/m-p/4796278#M43888 Only about 300 Prloiant Servers and 300 iLo cards. Not huge Fri, 10 Jun 2011 12:40:45 GMT https://community.hpe.com/t5/server-management-systems/sim-6-3-java-out-of-memory-errors/m-p/4796278#M43888 shocko 2011-06-10T12:40:45Z https://community.hpe.com/t5/server-management-systems/sim-6-3-java-out-of-memory-errors/m-p/4796279#M43889 In this case it could be a simple communication problem which is consuming the memory. You can check with netstat -an if you have an huge amount of blocked connections or increasing number of close_wait entries. <BR />The port number will give you an indication which part of SIM has the problem. In most cases this indicates credential problems.<BR /><BR />If you have 600 objects in side SIM with the default polling interval of 5 minutes this could be the reason. <BR /><BR />But I would also check the SIM logs for other exceptions perhaps the heap space was to small during a normal RMI operation. <BR /><BR />Do you see java stack dumpes in the diffrent log files ?<BR /><BR />Do you have also IRSA installed on the SIM server? Fri, 10 Jun 2011 13:32:46 GMT https://community.hpe.com/t5/server-management-systems/sim-6-3-java-out-of-memory-errors/m-p/4796279#M43889 BPE 2011-06-10T13:32:46Z