ST02-Buffers Issue

[Former Member]

Hi Experts,

I am finding Swaps on daily basis .we are planning to go live very soon with additional 500 users which will make total of 1000.

I want to know whether I may get any issue with performance?will my system may come down with current stttings?

Please advice whether do I really need to tune..

At present I am not getting any performance issues.

My Buffers data is as follows:

Nametab (NTAB) Field description and Program & CUA

Hit Ratios are : 98.25 and 97.80 and 99.59

My Allocated ; 31,289 and 400,000 and 8,00

My Free Space : 3,445 - 11.48% & 1,114 - 0.29% & 19--.27%

My Dir size : 30,000 & 100,000 and 4000

My Free Dir :22,864 -76.21% & 90,077--90.08% & 2,292- 57.30%

Swaps : 80,982 & 382,941 & 4,356

DB Access :88,862 and 1,181,571 and 2,029

MY Memorey Details are :

SAP memory Current use Max. use In memory On disk

[%] [kB] [kB] [kB] [%]

Roll area 5.72 14,986 15,264 65,536 196,608

Paging area 8.83 23,150 45,520 65,536 196,608

Ext Memory 9.35 1,262,592 1,474,560 13500,416

Heap Memory 0 410,065

Thanks

[Former Member]

Hi Experts,

How to find my SAP system is which bit either 32bit or 64bit?Both SAP Level & OS Level in UNIX Environment....Plz tell me how to find out...?

Edited by: Sandeep Kumar Reddy P on Aug 1, 2008 8:50 PM

[former_member185954]

SM51 - Select app server and then click the release information button, this should give you the SAP kernel.

Generally SAP kernel is equal to the OS type (i.e. 32 bit or 64 bit).

What OS are you running ?

Regards,

Siddhesh

[Former Member]

Hi,

I have called T-Code SM51 and the I check in release information.But there is no information about the BIT.Now,I'm using IBM AIX 5.3 Version.Tell me how to find in OS level.

[Former Member]

Hi,

I have called T-Code SM51 and the I check in release information.But there is no information about the BIT.Now,I'm using IBM AIX 5.3 Version.Tell me how to find in OS

[Former Member]

Login as <sid>adm and go to the exe directory /sapmnt/<SID>/exe and then execute the following command:

file disp+work

the result will show you if its a 32bit or 64bit. Like below

disp+work: 64-bit XCOFF executable or object module not stripped

Thanks,

Naveed

[JPReyes]

@Sandeep Kumar

This thread was NOT created by you...thread hijacking is not acceptable.

Please read the "Rules of Engagement" and comply.

As far as I can see this thread can be closed.

[Former Member]

Hi,

Hitratio is Good.If Hitratio gets below 98% & also swaps will be increased on that time.....Check the Long running background jobs.....if possible cancel it....and also execute SAPPFPAR command at OS level.It will give Min & Max level of Swap space requirement.Finally increase the buffer size.....I hope it will be helpfull to U...If you have any questions revert me back......

[Former Member]

Hi

The Hit Ratios of your buffers are pretty good. Which shows system is performing well.

Regarding Swaps, if you have not restarted your SAP instance for a long say 1-2 weeks, the swaps get accumulated in ST02. You should go for detailed analysis for Daily swaps.

Once your restart instance, all swaps will be cleared and new swap count will start.

So until the Swaps counts are too much on Daily basis, you need not to worry.

Regards

Rahul

[former_member185954]

Hello Rahul,

You need to experiment a bit with Swap space requirements.

The program sappfpar lets you check the minimum and maximum (worst case) swap space requirements for an SAP application server.

Check this link:

http://help.sap.com/saphelp_47x200/helpdata/en/66/380fb7d43d11d188bd0000e83539c3/frameset.htm

Regards,

Siddhesh