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Query in memory allocation of SAP/ORACLE in AIX system

Hello All,

We have configured around 76GB of physical RAM  in ECC system.  Moreover we found that only 300MB of free memory is available during business hours.

When we executed the below command at OS level during business hours, around 38GB of physical RAM is used (38GB of RAM should be free).  But in our case only 300MB free memory is available in the system

svmon -U -t 20 -i 10 -O summary=basic -O unit=GB

User                                 Inuse      Pin     Pgsp  Virtual

orasu1                                21.3     0.06     0.43     21.3

su1adm                              13.6     0.26     22.6     31.8

root                                      1.84     0.29     0.31     1.91

daaadm                               0.73     0.03     0.23     0.89

coda                                    0.47     0.04     0.04     0.50

sapadm                               0.37     0.03     0.12     0.45

uniq                                     0.16     0.04        0     0.13

nobody                                0.12     0.04        0     0.12

daemon                                0.12     0.04       00     0.12

bin                                            0        0        0        0

sys                                           0        0        0        0

adm                                          0        0        0        0

uucp                                          0        0        0        0

guest                                         0        0        0        0

lpd                                           0        0        0        0

lp                                            0        0        0        0

invscout                                 0        0        0        0

snapp                                    0        0        0        0

nuucp                                    0        0        0        0

ipsec                                    0        0        0        0

SAP Work process

Dia  BP BPA Spo Upd Up2 Enq Sum

75    20   -       3     9     4     1  112

sap Parameter value

EM/TOTAL_SIZE_MB = 31000

abap/heap_area_total  =  8000000000

abap/heap_area_dia     = 4000000000

abap/heap_area_nondia   = 4000000000

Oracle Parameter value

sga_max_size= 22G

pga_aggregate_target = 2G

db_cache_size      = 18496M
shared_pool_size    = 1600M

My question is how we need to calculate the memory consumption of the system. As per the OS level around 40GB is used. But the current usage it shows only 300 MB free memory is available.  Please help me to solve this issue.

Regards

Subbu

Former Member
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