on 01-26-2009 4:25 PM
Hi Guru's
I have a problem with teh buffer, appears me a swap overflow
Can you tell me, what is teh correct parameter for this objects?
Export/import 85.33 40,000 391 1.15 20,000 4,177 20.89 157,816
Efficiency HITRATIO % 85
HITS 10,604,365
REQUESTS 12,427,632
DB access quality % 100
DB access 0
DB access saved 0
Reorgs 0
Size Allocated KB 40,000
Available KB 34,059
Used KB 29,842
Free KB 391
Directory entries Available 20,000
Used 15,823
Free 4,177
Swaps Objects swapped 9,810
Frames swapped 157,816
Resets Total 0
My current parameters are:
rsdb/obj/buffersize 40000 kB
rsdb/obj/max_objects 20000
rsdb/obj/large_object_size 8192 Bytes
rsdb/obj/mutex_n 0
And I have other prameter wrong
Initial records 98.38 17,250 1,699 10.62 10,000 6,044 60.44 9,469
Efficiency HITRATIO % 98
HITS 816,105
REQUESTS 829,581
DB access quality % 98
DB access 13,428
DB access saved 816,103
Reorgs 0
Size Allocated KB 17,250
Available KB 16,000
Used KB 14,301
Free KB 1,699
Directory entries Available 10,000
Used 3,956
Free 6,044
Swaps Objects swapped 9,469
Frames swapped 0
Resets Total 0
And my curretn parameters are:
rsdb/ntab/irbdsize 16000 kB
rsdb/ntab/entrycount 40000
I hope, you can help me!!
THANKS!!
Hi Carlos,
From ST02 you can "current parameters" button, that will tell all current parameters per buffer.
You are bound to have swaps in some buffers altough ideally the number should be 0. Less than 10,000 a day is the maximum recommended by SAP.
Have a look at the history of the buffer and check when the swaps happened etc. Is it daily or a one off because something abnormal was running on the system a particular day.
Then check if the swaps happen because you're running out of space in the buffer or number of entries allowed. Then you can start thinking of tuning it.
Remenber that the swaps you see are since startup, so look at the history as well.
Let me know if you need any more help.
Pedro
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Hi Carlos,
Refer to SAP note 103747 for setting the parametrs as per release.
Regards,
Rupali
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