Performance of Netweaver

[Former Member]

Hi.

I'm using J2EE SPS10 Engine. I'm using NetWeaver developer studio 7.0.10.

I'm running J2EE engine through SAP Management Console. When IDE and J2EE engine started, my system goes very very slow.

I have 2GB RAM in my system.

When I check the performance tab in Windows TaskManager., I noticed that the PF Usage 3.27GB and the CPU Usage is always in the top.

When I do some deployment or build the system goes down and once it finishes its deployment it comes back.

What is the reason for this? and How to solve this issue?

Regards

Bala

[kohlerm · Accepted solution]

Hi,

You most likely don't have enough physical memory.

One solution might be to install the portal and the database on another machine.

If you want to have all components on one machine you most likely need to limit the maximum memory size for your portal, the db, and the IDE.

Regards,

Markus

[Former Member]

> I noticed that the PF Usage 3.27GB and

> the CPU Usage is always in the top.

Hi,

please check your settings for the Heap-Size of the J2EE-Engine in the Visual Admin. With only 2 GB RAM you should set it to 512 or perhaps you can try 1024MB too.

Do you have further programs installed on the server ?

What Windows-Version do you use ?

When the SAP-System is stopped how is the usage of the Page-File ?

Regards,

Norman

[Former Member]

Hi Norman.

Thanks for your reply.

I'm using Windows XP.

When SAP System is stopped, the page file is normal. It uses 700MB. But when I start the J2EE engine the PF usage goes upto 3GB.

Apart from this I'm not using any other programs.

Also can you please tell me how to check the heap size in Visual Admin.

Regards

Bala

[Former Member]

Hi,

I said the VisualAdmin, right ? But the right program is the ConfigTool - sorry for that.

You will find it under <i><Drive>:\usr\sap\<SAPSID>\<Instance_Name>\j2ee\configtool\configtool.bat</i>

In the list of the left you will find the entry "instance_<ID>". Double-click on it and you will get your dispatcher- and server-instance.

Now click on the "server_<ID>" entry and on the right you're now able to set the Java Max Heap size.

Here try different values (for your environment I would suggest 256 or 512MB). After you've set the value click on the disk on the top to save the settings and restart the SAP system.

Good luck !

Regards,

Norman

[Former Member]

Hi Norman.

The Max Heap Size is already set as 512.

So shall I change it to some more high value. If I did it will it reflect the performance. Plz let me know.

Regards

Bala

[Former Member]

<i>> The Max Heap Size is already set as 512.

> So shall I change it to some more high value.</i>

No, then the system would need more memory because all have to fit in the RAM of your computer.

So you could try a value of 256MB to decrease the usage of your pagefile.

<i>>If I did it will it reflect the performance</i>

Yes it will influence the performance of the SAP system. But if it is only a test environment for you it should work probably and also the performance should be ok.

If it's a productive system you should really upgrade the RAM to about 4GB.

Regards,

Norman