Upgrade from 8.1.5 on AIX 4.3.3 to 8.1.7

Hello,
Can any one tell me how to upgrade to 8.1.7 from 8.1.5 Parallel Server on AIX 4.3.3 HACMP. What will be approx cost . I heard that there are some bugs with 8.1.5. If so, can u list them.
The AIX 4.3.3 is on IBM F80 (6 CPUs) with 4GB RAM. We have purchased 150 user licence based on Power Units.

Thanks
Rajendra

You can install the 8.1.7 unser different home and use the Oracle Data Migration Assistant, to upgrade. Once after the upgrade apply the patchset 3

Sam