Memory Management on AIX (64-Bits) for CRM system (SAP Netweaver 7.0)

[former_member235282]

Dear experts,

I am trying to get the  formula to determine the following  memory  profile parameters for a  CRM SAP Netweaver 7.0  on AIX  to 64Bits.

ztta/roll_extension

abap/heap_area_dia

abap/heap_area_nondia

abap/heap_area_total

I have found  in the note  425207  a formula to get the value for the parameter  ztta/roll_extension (4096 - ztta/max_memreq_MB) * 1024 * 1024 – 1 but this formula doesn’t relate the physical parameters  (RAM and SWAP).

It is necessary  to recalcute these parameters since we are having problems with  memory  since the work process goes into “PRIV” mode  and starts using heap memory.

The suggestion is to change the values mentioned according to physical resources of each server (taking into account that  the  CRM system  works with  5 applications  servers)

My question is, does anybody know the formula that includes the physical parameters of the server (RAM) to calculate  these parameters values?

[Former Member · Accepted solution]

Hi Daniel ,

Check the below ones if they can guide you properly ::

http://help.sap.com/saphelp_nw70ehp2/helpdata/en/49/32f0c2e92e3504e10000000a421937/content.htm

http://help.sap.com/saphelp_46c/helpdata/en/84/7ed38ad81f11d188be0000e83539c3/content.htm

http://help.sap.com/saphelp_46c/helpdata/en/30/6188c277d211d3acc30000e83539c3/content.htm

Regards

Ram

[former_member235282 · Accepted solution]

Thanks  RAM

I wonder whether it also applies to  SAP Netweaver  versions or  only for SAP R / 3.

[alwina_enns]

Hello Daniel,

an estimation is

ram+swap = heap + extended memory

Regards,
Alwina

[Former Member]

Yes plus since it is CRM system, usually no large/heavy/memory intensive jobs. so give enough memory for database and extended memory. for heap you can go into swap

[Former Member]

ztta/roll_extension: Extended Memory Limit - SAP Memory Management (BC-CST-MM) - SAP Library