Oracle / Solairs Upgrade questions

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I have a client currently on Sun E450 Solaris 2.6 Oracle 8.1.5. We want to upgrade them to 8.1.6 and they also want to upgrade to Solaris 8. I understand that 8.1.6 was just certified on Solaris 8.

I am confident in applying Oracle upgrades but the OS upgrade concerns me a little. I will not be doing the OS upgrade. I am just concerned about order of events and compatibility issues with Oracle.

My questions:

1. Is the correct upgrade path?
2. oracle 8.1.5 to 8.1.6 to 8.1.6.1.1 (Solaris Patches)
3. Solaris 2.6 to Solaris 8
4. relink Oracle executables
5. Are we better off staying with 32 bit Solaris or going to 64 bit Solaris? (I understand that Oracle is slow to release the patches on 64 bit platforms other than Tru64)

Are there any gotchas I should watch out for??

TIA,
Babette (babette_at_pythian.com)

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