PXA_NO_FEE_SPACE

[former_member554231]

Hi Experts,

We are often coming across the Dump Error - PXA_NO_FREE_SPACE. Already we have set the Memory Paramters as in the SAP note - 88416 (Zero
administration memory management for the ABAP server). As a temporary solution we have incresed value of Parameter - abap/buffersize from
300MB (default) to 600MB (current).

Users are also complaining that System is very slow and even standard reports are also taking more time to process.

Give suggestions to improve.

Regards,

A.Sithanandan

[Former Member]

If you are using a 32 Bit operating system:

     use a 64 Bit one - you will never be happy running SAP ABAP Server on 32 bit

If you are using a 64 Bit operating system:

please check your pagefile size and pagefile attributes.

PXA (abap/buffersize) is the last and often the biggest shared memory buffer created during startup of a system. Unfortunately the system tries create a very small (4 MB??) - emergency buffer if it could not allocate abap/buffersize during start up. The emergency PXA buffer is just big enough for running the ABAP Short Dump Creation - not to logon interactively --> PXA_NO_FREESPACE.

This often happens when your system is short of memory (especially when working with system managed or auto-growing pagefiles). The operating system will grow the pagefiles slower than the application is allocating the memory, which results in allocation errors when allocating huge junks.

A good indicator for such a behavior is, that if you retry the startup several times it will start (after the pagefile has been grown to a sufficient size). This helps until the next reboot (when the pagefile is initially small again).

It only helps to provide sufficient sized pagefiles using fix sized pagefiles not autogrowing!!!

hope this helps

Peter

[former_member188883]

Hi Sithanandan,

Please change the parameter abap/buffersize = 1000 MB

For performance issue, please share details on Server RAM and No of CPUS.

Regards,

Deepak Kori

[former_member182034]

hi,

Please check and set the value of parameter PHYS_MEMSIZE as per this note 88416. If value is correct then You need to follow the instruction of this note 147568

Regards,

[former_member264034]

Hi,

Abap/buffersize needs to be increased to eliminate the issue as you have done.

Also refer to the following notes:

# 147568 - PXA_NO_FREE_SPACE

#103747  Performance: Parameter recommendations as of Release 4.0
#1267828 - Swaps in program buffer even though plenty of space is free

Or please consider double value of following profile parameter.

ztta/roll_extension
abap/heap_area_dia

Regards,
Aidan