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Nov 04, 2019 at 04:29 AM

Regularly getting TSV_TNEW_BLOCKS_NO_ROLL_MEMORY dumps

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Hi,

We are constantly encountering the TSV_TNEW_BLOCKS_NO_ROLL_MEMORY dump in our production system.

Following are the memory parameters :

System : SAP PRD (One instance )(ABAP system)

Kernel :700

AIX : 6.1

em/initial_size_MB =4092 MB

PHYS_MEMSIZE = 25GB

em/max_size_MB= 4092 MB

em/address_space_MB = 4092 MB

em/global_area_MB = 250

em/total_size_MB = 16384

apab/heap_area_dia = 2000000000

abap/heap_area_nondia = 2000000000

abap/heap_area_total = 4000000000

ztta/roll_area = 6500000

ztta/roll_first = 1

ztta/roll_extension = 2000000000

rdisp/ROLL_MAXFS = 32768

rdisp/roll_SHM = 16384

rdisp/PG_MAXFS = 32768

rdisp/PG_SHM = 8192

RAM and other hardware specifications :

prdsap1:p01adm 6> lsattr -El mem0 -a size

size 15616 Total amount of physical memory in Mbytes False

prdsap1:p01adm 7> vmstat System configuration: lcpu=8 mem=15616MB kthr memory page faults cpu ----- ----------- ------------------------ ------------ ----------- r b avm fre re pi po fr sr cy in sy cs us sy id wa 1 1 4271662 203120 0 7 8 261 521 0 88 2976 654 3 1 94 1 prdsap1:p01adm 8>

prdsap1:p01adm 8> lsattr -El sys0 | grep realmem realmem 15990784 Amount of usable physical memory in Kbytes False

prdsap1:p01adm 23> lsps -a Page Space Physical Volume Volume Group Size %Used Active Auto Type Chksum paging00 hdisk2 datavg 19968MB 21 yes yes lv 0 hd6 hdisk1 rootvg 512MB 98 yes yes lv 0 prdsap1:p01adm 24>

Kindly suggest the requisite changes which are needed to be done in terms of memory parameters .

I have attached the st22 dump.

Regards,

Abhishek Gupta