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ST06 Tcode - How to check

Former Member
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This will be one of my daily monitoring. Can anyone tell me how to check all this and Why it should be like that.

For example Why the CPU Usage should be above 60%

Why the Free memory should be < 512mb

Why Use of Swap should be >2gb

And i am not sure how to check the Use of Swap

OS collector u2013 For each application server, report occurrences of any of the following:

CPU Usage > 60%,

Free Memory < 512 MB

Use of Swap > 2 GB

Thank you so much for all your help. Thanks.

Accepted Solutions (1)

Accepted Solutions (1)

debasissahoo
Active Contributor
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Hi,

Why the CPU Usage should be above 60%

I don't know where you got that.. CPU idle time should be more than 20% so that your CPU is not overloaded.

Why the Free memory should be < 512mb

depends on your configuration setting of memory.. there is obviously something wrong.. why < ???

Why Use of Swap should be >2gb

again,depends on your configuration setting of memory... depends on the application also. instguide tells you whats the minimum swap you need to set during installation.

And i am not sure how to check the Use of Swap

you can do it as OS level, or by ST06, you will see commit charge free which gives a sum of ram, swap.

Regards,

Debasis.

Answers (2)

Answers (2)

JPReyes
Active Contributor
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  • No interview questions

  • No research done

That information is widely available.

Read the "Rules of Engagement"

Regards

Juan

former_member187565
Active Contributor
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Hi Ram,

CPU should not exceed more than 60% for long time for any process.So that your CPU is not overloaded.

An SAP application server shares the swap space in the host system with non-SAP processes. The maximum swap space size that an SAP application server can occupy is determined by the following factors: In SAP application server the shared memory segments uses 200 to 700MB.A work process which is running in sap takes approx 12MB.When SAP start the SAP extended memory pool takes 500 to 1500MB.Again R/3 limits for the HEAP memory for the work processes of an application server. Now you calculate the maximum sizes of the above mention area 700121500=2212MB.Again there are not only one work process in your system. Thats why its recommend that the swap space size should be greater than 2GB.

Check the below links for more info

http://help.sap.com/saphelp_nw04/helpdata/EN/02/962658538111d1891b0000e8322f96/frameset.htm

http://help.sap.com/saphelp_nw04/Helpdata/EN/02/96283e538111d1891b0000e8322f96/frameset.htm

http://help.sap.com/saphelp_nw04/Helpdata/EN/55/b5b93b5bb3493fe10000000a114084/frameset.htm