SWAP space in Red Strips

[Former Member]

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

[Former Member]

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

[Former Member]

closing the issue.

DSC

[Former Member]

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

[JPReyes]

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

[JPReyes]

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

[Former Member]

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>

[Former Member]

Dear Sunil,

We are using Windows Server 2003 as OS and MS SQL 2005 as DB.

I know, we can change the parameter in RZ10. But, I just want to know, before changing the parameter:

Will we required to change the paging size or not.

If some other modification required before that, please tell me.

DSC