on 12-17-2010 8:02 AM
Hi BASIS GURUS / EXPERTS,
My Server RAM is 8GB & Total Paging Size 16000 MB. Now during the check, in T-code ST02- I found the red strips in SWAP Space -
Here Swap space for - Field description, Initial records, Program, CUA, Screen, Generic key, Export/import are appearing in red strips.
How can I increase the SWAP Space for these fields. please mention steps.
Thanks in advance.
DSC
Hi,
Increasing swap size will not resolve the swaps that occur in ST02. Try changing the given below parameters according your requirements:
ztta/roll_area
ztta/roll_first
ztta/short_area
rdisp/ROLL_SHM
rdisp/PG_SHM
rdisp/PG_LOCAL
em/initial_size_MB
em/blocksize_KB
em/address_space_MB
ztta/roll_extension
abap/heap_area_dia
abap/heap_area_nondia
abap/heap_area_total
abap/heaplimit
abap/buffersize
Regards,
SBK
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Hi,
In St02 T.Code Clicking the Button Current Parameters show you the Parameters and values used.
But it is recommended to check the SAPPFPAR and change the settings recommended.
For Clearing the RED Swaps its better to restart the SAP Instance Periodically.
Regards
Valavan.SM
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For Clearing the RED Swaps its better to restart the SAP Instance Periodically.
That will only take the issue away temporarely, won't fix anything.... small amount of swapping in not an issue but execessive buffer swapping will lead you to performance issues.
The answer is simple... you need to review your current settings and increase the buffer size of the areas with problems.
I recommend you to take course ADM315 - Workload Analysis AS ABAP
Regards
Juan
SWAP space / Page file (virtual memory) has absolutely nothing to do with buffer SWAPS
Buffer SWAP occures when the buffer has insufficient free space and need to be remove objects to add new ones.
This is a basic concept, please read the documentation available.
Regards
Juan
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whats your OS?
in ST02, you can see the current parameters for all your buffers, review them and change accordingly.
Make sure you perform following check from command prompt.
sappfpar check pf=<instance_profile>
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