This ST02 buffer is mainly on a shared memory (SHMM IPC 10 and 40 ).
Run a sappfpar utility check to find out any memeory issues on the system .
This will tell you if any Shared memeory to be increased.
cwrci:cwradm 4> sappfpar check pf=/sapmnt/CWR/profile/CWR_DVEBMGS75_cwrci
Shared memory disposition overview
================================================================
Shared memory pools
Key: 10 Pool
Size configured.....: 328000000 ( 312.8 MB)
Size min. estimated.: 322926786 ( 308.0 MB)
Advised Size........: 326000000 ( 310.9 MB)
Key: 40 Pool for database buffers
Size configured.....: 116000000 ( 110.6 MB)
Size min. estimated.: 109999040 ( 104.9 MB)
Advised Size........: 114000000 ( 108.7 MB)*
Shared memories inside of pool 10
Key: 11 Size: 500000 ( 0.5 MB) Factory calender buffer
Key: 12 Size: 6000000 ( 5.7 MB) TemSe Char-Code convert Buf.
Key: 13 Size: 60500000 ( 57.7 MB) Alert Area
Key: 14 Size: 4400128 ( 4.2 MB) Presentation buffer
Key: 17 Size: 2672386 ( 2.5 MB) Roll administration
Key: 30 Size: 23552 ( 0.0 MB) Taskhandler runtime admin.
Key: 33 Size: 92160000 ( 87.9 MB) Table buffer, part.buffering
Key: 34 Size: 40960000 ( 39.1 MB) Enqueue table
Key: 51 Size: 3200000 ( 3.1 MB) Extended memory admin.
Key: 54 Size: 61448192 ( 58.6 MB) Export/Import buffer
Key: 55 Size: 8192 ( 0.0 MB) Spool local printer+joblist
Key: 57 Size: 1048576 ( 1.0 MB) Profilparameter in shared mem
Key: 58 Size: 4096 ( 0.0 MB) Enqueue ID for reset
Shared memories inside of pool 40
Key: 42 Size: 7232992 ( 6.9 MB) DB TTAB buffer
Key: 43 Size: 32534392 ( 31.0 MB) DB FTAB buffer
Key: 44 Size: 7958392 ( 7.6 MB) DB IREC buffer
Key: 45 Size: 4886392 ( 4.7 MB) DB short nametab buffer
Key: 46 Size: 20480 ( 0.0 MB) DB sync table
Key: 47 Size: 4097024 ( 3.9 MB) DB CUA buffer
Key: 48 Size: 300000 ( 0.3 MB) Number range buffer
Key: 49 Size: 2968344 ( 2.8 MB) Spool admin (SpoolWP+DiaWP)
Shared memories outside of pools
Key: 1 Size: 2500 ( 0.0 MB) System administration
Key: 2 Size: 37617304 ( 35.9 MB) Disp. administration tables
Key: 3 Size: 50614400 ( 48.3 MB) Disp. communication areas
Key: 4 Size: 515248 ( 0.5 MB) statistic area
Key: 6 Size: 425984000 ( 406.2 MB) ABAP program buffer
Key: 7 Size: 14838 ( 0.0 MB) Update task administration
Key: 8 Size: 67108964 ( 64.0 MB) Paging buffer
Key: 9 Size: 134217828 ( 128.0 MB) Roll buffer
Key: 16 Size: 22400 ( 0.0 MB) Semaphore activity monitoring
Key: 18 Size: 917604 ( 0.9 MB) Paging adminitration
Key: 19 Size: 100000768 ( 95.4 MB) Table-buffer
Key: 31 Size: 4206000 ( 4.0 MB) Dispatcher request queue
Key: 41 Size: 25010000 ( 23.9 MB) DB statistics buffer
Key: 52 Size: 40000 ( 0.0 MB) Message Server buffer
Key: 62 Size: 316669952 ( 302.0 MB) Memory pipes
Key: 63 Size: 409600 ( 0.4 MB) ICMAN shared memory
Key: 64 Size: 4202496 ( 4.0 MB) Online Text Repository Buf.
Key: 65 Size: 51208192 ( 48.8 MB) Export/Import Shared Memory
Key: 1002 Size: 400000 ( 0.4 MB) Performance monitoring V01.0
Key: 58900175 Size: 4096 ( 0.0 MB) SCSA area
Nr of operating system shared memory segments: 22
Shared memory resource requirements estimated
================================================================
Nr of shared memory descriptors required for
Extended Memory Management (unnamed mapped file).: 32
Total Nr of shared segments required.....: 54
System-imposed number of shared memories.: 1000
Shared memory segment size required min..: 425984000 ( 406.2 MB)
System-imposed maximum segment size......: 35184372088832 (33554432.0 MB)
Swap space requirements estimated
================================================
Shared memory....................: 1584.2 MB
..in pool 10 308.0 MB, 98% used
..in pool 40 104.9 MB, 94% used
..not in pool: 1162.7 MB
Processes........................: 223.5 MB
Extended Memory .................: 8192.0 MB
-
Total, minimum requirement.......: 9999.8 MB
Process local heaps, worst case..: 100.0 MB
Total, worst case requirement....: 10099.8 MB
Errors detected..................: 0
Warnings detected................: 2
cwrci:cwradm 5>
In the above case , the shared memory pool is configured more that required (it is just warning ) .
ipc/shm_psize_10 328000000
ipc/shm_psize_40 116000000
One general point , in system where development is happening heavily , then Program buffer wil be used heavily.So , check with functional and developer team and findout what functionality is going to be used heavily and increase the buffer accordingy.
Check the buffers outside the pool , check the buffer profile parameter by checking in transaction ST02 and increase it accordingly.
check SAP Buffers @
http://help.sap.com/saphelp_nw04/helpdata/en/c4/3a6dbb505211d189550000e829fbbd/frameset.htm
Edited by: Venkatramani Hariharan on Jun 6, 2008 3:49 PM
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