Which is the reliable/trusted/suggested method to calculate the memory utilization by a DB2 Instance (assuming there is just one instance of DB2 on a server) ?

Env : DB2 V8.2 / AIX 5.3

Option 1: Using db2mtrk
MEMORY=`db2mtrk -i -d -p -v | grep Total | awk '{ print $2 }'`

TOTAL_MEMORY=0
for i in `echo $MEMORY`
do
TOTAL_MEMORY=`expr $TOTAL_MEMORY + $i`
done

Option 2: Using ps as instance owner.
DB2_MEM_LIST=$( ps gux | grep db2 | awk '{ print $6 }' | tr '\012' ' ' )

DB2MEM=0
for db2_mem in $DB2_MEM_LIST
do
(( DB2MEM=DB2MEM + $db2_mem ))
done

Pls advice. Thanks

have you tried db2pd - look at
http://publib.boulder.ibm.com/infoce...e/r0008304.htm

I try to use db2pd on a test environment but I have the following questions
[1] What is Memory Pools and Memory sets ?
[2] What is the difference between mempool & memsets ?