Memory monitoring system (How to interpret prstat and pmap)

Hi,  

We noticed somethimes that available physical RAM is going around 0 so need to get details into command to look into which process is using how much memory:

Oracle 10g installed on solaris 10

RAM : 2GB SGA : ~600MB PGA_AGGREGATE_TARGET : ~200MB   Currently system have following information:  

$ prstat

   PID USERNAME SIZE RSS STATE PRI NICE TIME CPU PROCESS/NLWP   7939 oracle 4936K 4648K cpu0 39 0 0:00:00 0.1% prstat/1

 13045 oracle 710M 610M sleep 59 0 0:01:37 0.1% oracle/1

 13024 oracle 711M 603M sleep 59 0 0:00:47 0.0% oracle/1

 13041 oracle 711M 614M sleep 59 0 0:01:02 0.0% oracle/1

 13035 oracle 712M 610M sleep 59 0 0:00:49 0.0% oracle/11

 13043 oracle 714M 624M sleep 59 0 0:00:20 0.0% oracle/1

  2333 oracle 8160K 3248K sleep 49 0 0:00:02 0.0% sshd/1

   487 oracle 710M 622M sleep 59 0 0:00:47 0.0% oracle/1

    81 root 3472K 2224K sleep 59 0 0:00:09 0.0% picld/5

 13031 oracle 717M 610M sleep 59 0 0:00:22 0.0% oracle/249

   316 smmsp 5936K 1904K sleep 59 0 0:00:00 0.0% sendmail/1

   194 root 2112K 1184K sleep 59 0 0:00:00 0.0% ttymon/1

   200 root 2080K 1096K sleep 59 0 0:00:00 0.0% ttymon/1

   272 root 4984K 2144K sleep 59 0 0:00:00 0.0% automountd/3

   187 daemon 2320K 1320K sleep 60 -20 0:00:00 0.0% nfs4cbd/2

   178 root 2608K 1328K sleep 59 0 0:00:00 0.0% cron/1

    88 daemon 5064K 2840K sleep 59 0 0:00:06 0.0% kcfd/7

   181 daemon 2576K 1288K sleep 59 0 0:00:00 0.0% rpcbind/1

   185 daemon 2832K 1640K sleep 59 0 0:00:00 0.0% statd/1

    60 root 2488K 1264K sleep 59 0 0:00:00 0.0% syseventd/14

   191 root 1976K 1064K sleep 59 0 0:00:00 0.0% sac/1

Total: 216 processes, 601 lwps, load averages: 0.03, 0.02, 0.05  

$ pmap -x 13045

1. ora_mmnl_netmeter

         Address Kbytes RSS Anon Locked Mode Mapped File

0000000100000000 100536 38584 - - r-x-- oracle

000000010632C000 808 520 176 - rwx-- oracle

00000001063F6000 1016 1000 1000 - rwx-- [ heap ]

0000000380000000 598024 598024 - 598024 rwxsR [ ism shmid=0x12 ]

....

....

.....

....
   

       total Kb 723240 645544 3000 598024  

How to interpret the output of prstat and pmap commands?

Do resident memory means RAM memory or this may include swap?

Do anonymous is private memory and that means the current process is only using ~3M of private memory?

Is there any easy command that can give me total memory used by all the oracle processes?    

--
http://www.freelists.org/webpage/oracle-l