on 07-26-2010 9:23 AM
Dears,
We are facing Performace issue in our system.
Dialog responce time is near to 1600 ms.
I checked the system and find that our Program,Screen and Export/Import buffer are getting full again and agin.
I also checked that heap memory is also being utilized that I think should not be utilized in normal case.
Now I am planning to increase buffer space but my question is do we have space on OS level also to increase it.
In ST06
Memory
Physical mem avail Kb 163445720 Physical mem free Kb 91127904
Pool
Configured swap Kb 167755776 Maximum swap-space Kb 331217880
Free in swap-space Kb 250708744 Actual swap-space Kb 331201496
Some times I have also found error in CCMS that no physical memory is available.
As I understands this Physical Memory is RAM of system and Swap space is Paging memory .
And buffers will take space from this physical + Swap Space.
Please suggest.
Regards,
Shivam Mittal
Hi Shivam,
Performance is quite big and you need to always add the info. like your OS/DB, Well you can see below SAPnote as per your OS/DB. Also its not easy to get the solution for performance as all the implementation on SAP worldwide are different and highly customized.
AIX (UNIX flavour)
Note 1121904 - SAP on AIX: Recommendations for paging space
Windows you can go for Zero Administration
Note 88416-Zero administration memory management as of 4.0A/ Windows
Hope it will help you to find out the solution
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> Physical mem avail Kb 163445720 Physical mem free Kb 91127904
😮
You surley have enough unused memory to increase any buffer you like !
May be you should give us some data of what is configured yet.
From Oracle:
db_cache_size
shared_pool_size
pga_aggregate_target
from SAP
*wp_no_???
abap/buffer_size
em/inittial_size_MB
If Windows PHYSICAL_MEMSIZE
For starters: With 90G not beinig used, I'll start giving 20G to db_cache_size
set / upgrade abap/buffersize to 1,5GB and may be use some more Workprocesses.
Volker
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Dears,
My OS is HP-UNIX and Database is Oracle 10.2.0.2.0
Required Parameters valuses are as:
db_cache_size = 0
shared_pool_size = 419430400
pga_aggregate_target = Not Set
wp_no = 30 Dialog
abap/buffer_size = 1024000 kb
em/inittial_size_MB = 16384 MB
Please suggest.
And please make my concept clear that Total Memory of server from which allocated all buffers and extended and heap memory take space is Total Pysical Memory available + Swap space ( shown in ST06)
Regards,
Shivam
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