Very very slow r3load

hi,

i am performing the import using R3load on oracle 10.2.0.2.0 databse which is on 4.5B before upgrade.

init.ora parameters are maintained as per OSS 936441

for 205GB database import is taking almost 13 hours which looks to be very high.

DB is on 12GB ram 64bit hardware.

please provide any tips.

regards,