Identifying shared memory segment for oracle instance

Hi,

We have 3 oracle instances(8.1.6) running on unix(hp-ux v11) box. Following 'ipcs -m' command shows the shared memory segments for 3 instances. How do I know which shared segment belongs to which oracle instance.

All your inputs are appreciated.

Thanks in advance,
Regards,
prasad

$ ipcs -m
IPC status from /dev/kmem as of Wed Nov 22 13:19:57 2000 T ID KEY MODE OWNER GROUP Shared Memory:

m       0 0x2fd80002 --rw-------      root       sys
m       1 0x41dc361e --rw-rw-rw-      root      root
m       2 0x4ecc0002 --rw-rw-rw-      root      root
m       3 0x41e0383e --rw-rw-rw-      root      root
m       4 0x0c6629c9 --rw-r-----      root      root
m       5 0x06347849 --rw-rw-rw-      root      root
m   48134 0xb55feaac --rw-r-----    oracle  oinstall
m  140296 0x67c69240 --rw-r-----    oracle  oinstall
m    8713 0x1a2d39d4 --rw-r-----    oracle  oinstall