Program Swaps Still red after increasing memory pool 10

[Former Member]

Dear Guru's

I use SAP R/3 4.0B. i face a red alert in Program Swaps (abap/buffersize (pxa)). i already try to increase size of memory pool 10 and move ipc/shm_psize_06 = -10.

But i always get red alert from Program Swaps (in ST02). my question, how to eliminate program swaps red alert in the future?

Here is the configuration of profile

ipc/shm_psize_06 = -10

abap/swap_reserve = 20971520

ipc/shm_psize_04 = -10

ipc/shm_psize_07 = -10

ipc/shm_psize_10 = 912000000

ipc/shm_psize_14 = -10

ipc/shm_psize_19 = 0

ipc/shm_psize_40 = 98000000

ipc/shm_psize_51 = -10

ipc/shm_psize_52 = -10

ipc/shm_psize_54 = -10

ipc/shm_psize_55 = -10

SAPPFPAR Check pf result.....

================================================================================

== Checking profile: /sapmnt/TRX/profile/TRX_D01_pride1

================================================================================

Shared memory disposition overview

================================================================

Shared memory pools

Key: 10 Pool

Size configured.....: 912000000 ( 869.7 MB)

Size min. estimated.: 908616838 ( 866.5 MB)

Advised Size........: 912000000 ( 869.7 MB)

Key: 40 Pool for database buffers

Size configured.....: 98000000 ( 93.5 MB)

Size min. estimated.: 93384400 ( 89.1 MB)

Advised Size........: 96000000 ( 91.6 MB)

Shared memories inside of pool 10

Key: 1 Size: 2000 ( 0.0 MB) System administration

Key: 2 Size: 6425872 ( 6.1 MB) Disp. administration tables

Key: 3 Size: 112000000 ( 106.8 MB) Disp. communication areas

Key: 4 Size: 525448 ( 0.5 MB) statistic area

Key: 6 Size: 632832000 ( 603.5 MB) ABAP program buffer

Key: 7 Size: 14838 ( 0.0 MB) Update task administration

Key: 8 Size: 8192100 ( 7.8 MB) Paging buffer

Key: 9 Size: 66060388 ( 63.0 MB) Roll buffer

Key: 11 Size: 500000 ( 0.5 MB) Factory calender buffer

Key: 12 Size: 120000 ( 0.1 MB) TemSe Char-Code convert Buf.

Key: 13 Size: 2500000 ( 2.4 MB) Alert Area

Key: 14 Size: 26000000 ( 24.8 MB) Presentation buffer

Key: 16 Size: 22400 ( 0.0 MB) Semaphore activity monitoring

Key: 17 Size: 1441892 ( 1.4 MB) Roll administration

Key: 18 Size: 1835108 ( 1.7 MB) Paging adminitration

Key: 31 Size: 3606000 ( 3.4 MB) Dispatcher request queue

Key: 33 Size: 30720000 ( 29.3 MB) Table buffer, part.buffering

Key: 51 Size: 3200000 ( 3.1 MB) Extended memory admin.

Key: 52 Size: 20000 ( 0.0 MB) Message Server buffer

Key: 54 Size: 12582912 ( 12.0 MB) Export/Import buffer

Key: 55 Size: 8192 ( 0.0 MB) Spool local printer+joblist

Shared memories inside of pool 40

Key: 41 Size: 9010000 ( 8.6 MB) DB statistics buffer

Key: 42 Size: 5380592 ( 5.1 MB) DB TTAB buffer

Key: 43 Size: 51846392 ( 49.4 MB) DB FTAB buffer

Key: 44 Size: 6790392 ( 6.5 MB) DB IREC buffer

Key: 45 Size: 5254392 ( 5.0 MB) DB short nametab buffer

Key: 46 Size: 20480 ( 0.0 MB) DB sync table

Key: 47 Size: 11776000 ( 11.2 MB) DB CUA buffer

Key: 48 Size: 300000 ( 0.3 MB) Number range buffer

Key: 49 Size: 3000000 ( 2.9 MB) Spool admin (SpoolWP+DiaWP)

Shared memories outside of pools

Key: 19 Size: 65000000 ( 62.0 MB) Table-buffer

Key: 1002 Size: 400000 ( 0.4 MB) Performance monitoring V01.0

Key: 58900101 Size: 4096 ( 0.0 MB) SCSA area

Nr of operating system shared memory segments: 8

Shared memory resource requirements estimated

================================================================

Nr of shared memory descriptors required for

Extended Memory Management ..............: 64

Total Nr of shared segments required.....: 72

System-imposed number of shared memories.: 1000

Shared memory segment size required min..: 912000000 ( 869.7 MB)

System-imposed maximum segment size......: 4294967296 (4096.0 MB)

Swap space requirements estimated

================================================

Shared memory....................: 1025.6 MB

..in pool 10 866.5 MB, 99% used

..in pool 40 89.1 MB, 95% used

..not in pool 62.4 MB

Processes........................: 322.0 MB

Extended Memory .................: 4096.0 MB

-

---

Total, minimum requirement.......: 5443.5 MB

Process local heaps, worst case..: 1907.3 MB

Total, worst case requirement....: 7350.9 MB

Errors detected..................: 0

Warnings detected................: 0

[mercedes_fernandez · Accepted solution]

Hello,

in a productive system till 10000 swaps per day for the program buffer should be fine.

the parameter abap/buffersize defines the size of the program buffer, you might need to increase this one.

kind regards,

Mercedes

[Former Member · Accepted solution]

Hi Mercedes,

i already set abap/buffersize=600000, but still red alert. is it enough?

Thanks,

Agni

[mercedes_fernandez · Accepted solution]

Hello,

how many swaps do you have per day? around 10000 - 12000 should be fine in a productive system.

if you have more you could increase it more.

kind regards,

Mercedes

[Former Member · Accepted solution]

Hi,

below 1000 per day. actually, what a really problem if we get red alert in program swaps?

Regards,

Agni

[mercedes_fernandez · Accepted solution]

Hello,

then should be ok, you don't need to increse the program buffer.

Swap shows how many objects have been swapped out since system startup.

kind regards,

Mercedes

[Sriram2009]

Hi

have you tried the Zero memory management as per the SAP note -88416

Regards

Sriram

[Former Member]

Hi Sriram,

Thanks for your replied, but unfortunately our system using AIX 5.2 64 Bit not Microsoft O/S as that's note mentioned.

BTW, thank for your reply.

Regards,

Agni

[Former Member]

I tried to take out abap/buffersize from memory pool 10 and restart the server.

the result is, red swap increase more lower than before.

Actually, which is better way to put abap/buffersize into pool 10 or outside pool 10?

Regards,

Agni

[Former Member]

Hi Agni,

It is something around abap/buffersize = 1500000, in my profile configuration. You should calculate the average value by calling ST02 -> double click on "program" -> History (Shift+F6) -> Get average value of "Free Stor." column

So, it will help you to find suitable value for your needs.

But keep in mind that, if your system is 32-bit, the value shouldn't be more than 1500000. Otherwise, your system might not be started succesfully.

Best regards,

Orkun Gedik

[Former Member]

Hi orkun,

thanks for your share, but unfortunately i cannot find "Get Average Value....". because i used 4.0B version, maybe.

Is there any clue in SAP that i can follow for create a suitable size for my R3?

Regards,

Agni

[Former Member]

Hi Agni,

>> thanks for your share, but unfortunately i cannot find "Get Average Value....". because i used 4.0B version, maybe.

There is no "Get Average Value...." field here. I wanted to say that you should calculate it by yourself.

Here is the formula;

SumOf(Directory Entries free)/number of total days

Or take a look at "Average" line at the bottom of the list.

Then, you should monitor it, in the further days and increase the value, if it requires.

Best regards,

Orkun Gedik