EXSORT_NOT_ENOUGH_MEMORY

Question

Dear All,
We are getting this dump while blocking PO in ME32L in our production.
Production is on Windows NT 32Bit with 4 GB physical RAM.
Standard parameter--
ztta/roll_first          1
ztta/roll_area          2000000
ztta/roll_extension                     2000000000
ztta/max_memreq_MB     1048          
em/address_space_MB     512
em/initial_size_MB                     4092          
em/max_size_MB          20000
em/global_area_MB                     128
em/stat_log_size_MB                     20
em/stat_log_timeout                     0
ztta/roll_area          2000000
abap/heap_area_dia                     2000000000
abap/heap_area_nondia     2000000000
abap/heap_area_total                     2000000000
rdisp/ROLL_SHM          32768          
rdisp/PG_SHM          16384          
rdisp/PG_MAXFS          32768          
abap/buffersize          400000
abap/heap_area_dia                     2000000000
abap/heap_area_nondia     2000000000
abap/heap_area_total                     2000000000
abap/heaplimit          40000000
Please suggest
Regards,
Mahesh

Answer 1

Hello,
The reasons for the dump are described in SAP note #193529 (Sort as of 4.5A /
EXSORT_NOT_ENOUGH_MEMORY) I will also outline some other steps:
Possible solutions:
1. Normally reducing parameter abap/heap_area_nondia is sufficient
   to provide HEAP memory for example a SORT operation.  So you can
   reduce the parameter slightly, and then check the problem
   again. For more info, please refer to note #193529. Suggest
   to leave this option until last if it's a Windows 32-bit instance.
2. You can consider reducing the shared memory areas such as the
   program, roll or paging buffers. If necessary investigate
   the potential for this on the instance where the dumps occur
   if the information below is not clear enough to determine if
   roll and paging buffers can be reduced from defaults.
3. Activate the '/3GB' option, please refer to note #313347 to check
   if your edition supports this being set in the C:\boot.ini file.
   http://support.microsoft.com/kb/28303, has more information about
   the /3GB option.
These errors can be due to lack of address space or that
the data selection is too large for the available memory of the
instance and needs to be reduced to ensure that it can finish without
memory terminations.
More information about this topic that can be applied to any
Windows 32-bit instance:
====================================================
To re-allocate some of the unused shared memory to program memory,
a prime candidate for this is Roll and Page "In Memory" values.
Alternative memory management via PHYSMEMSIZE generally overallocates
roll and page memory. Please reduce the amounts allocated to the "in
memory" part (see ST02) using the parameters below...
Zero administration memory management (Note #88416) generally
overallocates roll and page memory. Usually you can reduce the
the amounts allocated to the "in memory"
rdisp/ROLL_MAXFS....Total amt of ROLL (Filesystem+SHM); in 8KB blocks
rdisp/ROLL_SHM......Shared memory element of Roll; in 8KB blocks
rdisp/PG_MAXFS......Total amt of Page (Filesystem+SHM); in 8KB blocks
rdisp/PG_SHM........Shared memory element of Roll; in 8KB blocks
=>Filesystem amount. = MAXFS - SHM
Bear in mind that Roll_SHM MUST be greater than 10% of Roll_MAXFS.
60MB or so each in memory should be sufficient. rdisp/ROLL_SHM &
rdisp/PG_SHM only to be changed. This should allow extra
memory for process memory.
It also important that after changing the parameters that you
monitor in TA ST02 the consumption of Roll and Paging in the system.
If the value of 'Max. use' for the Roll-Area reach the value
'In memory' then you should increase the parameter rdisp/ROLL_SHM
to e.g. 10000.
Example:
rdisp/ROLL_SHM changed from 32768 to 7500 (60000/8) to change
the 'in memory' Roll area from 262,144 kB to 60,000 kB
====================================================
An increase in available address space by reducing buffers as above or
more importantly the PAE /3GB flag if possible may be enough to ensure the
successful completion.
Regards.