what or who is eating the memory in solaris server

Hi guys

One solaris server I'm seeing is using 21 GB of the 32GB physical memory

load averages:  3.65,  3.75,  3.48;  up 254+08:28:31  10:53:25

465 processes: 461 sleeping, 4 on cpu

CPU states: 95.9% idle,  3.3% user,  0.8% kernel,  0.0% iowait,  0.0% swap

Memory: 32G phys mem, 8763M free mem, 16G total swap, 16G free swap

sacux118 {oracle}:MU3D1 #prtconf | grep Memory

Memory size: 32640 Megabytes

sacux118 {oracle}:MU3D1 #uname -a

SunOS sacux118 5.10 Generic_142900-14 sun4v sparc SUNW,SPARC-Enterprise-T5220

sacux118 {oracle}:MU3D1 #

there are hosted 7 database and according to some Oracle notes i didn't some calculations and only databases are using 13 GB

    

Total DB memory (SGA + PGA)

Total process Memory (Background and users)