PXA_NO_SHARED_MEMORY dump while running process chain jobs in BI

[Former Member]

Hi All,

We are using SAP BI 7.0 Windows 2003 64 Bit Edition

While running the dataload and process chain jobs in BI production system, we are getting short dump in the system "PXA_NO_SHARED_MEMORY", due to this buisness is affected.

Can you please tell me what parameter needs to be checked for this?

We have abap/buffersize 2000000MB.Please let me know whether the parameter em/max_size_MB needs to be set for windows system?

What other parameters needs to be checked and set

Kindly suggest

Regards,

Vijayashree.

[Former Member · Accepted solution]

Hello,

PXA_NO_SHARED_MEMORY means that the kernel is unable to get sufficient memory to allocate the ABAP program buffer (PXA buffer). It does not mean that so much ABAP code has to be loaded that it "overflows" the PXA if the buffer fills up objects simply get swapped out of it). A value of 2000000 (~2GB) seems very high for a BI system. My first idea in a situation like this would be to configure a smaller PXA, e.g. at 1000000. If that does not help or if you really need a PXA this big (in which case you'll see a high number of object swaps in txn ST02 when running with a smaller buffer), then you might either have too little RAM and/or paging or your server displays memory fragmentation.

The parameter em/max_size_MB should be left to zero-admin memory management as per note 88416. In any case it does not play a role here because it affects extended memory and not shared memory (which is where the PXA and other shared buffers reside).

Regards,

Mark

[Former Member]

Hi

PXA is too low,what is your Current Program buffer value (goto st02 screen >> Program buffer) and RAM size of your

system.Related parameter abap/buffersize =value in KB

Regards

Arun.H

[former_member189546]

Hello,

Check note 88416

em/max_size_MB normally 100000Mb

"PXA_NO_SHARED_MEMORY means programme buffer overloaded

Normally it is 1000000KB abap/buffersize

Check the data selection in bi range might be too high

regards,

John Feely

[fjhernanz]

Hi,

Since you're on Windows you need to proceed as per notes 1518419 and 88416 . These can help clarify this

kind of issues.

Br,

Javier