Hi

I was invovled with several such projects for migrations .here are some of the DO's

1)The most importatnt first step is to take a Cold backup of your system.i mean the entire software including ur database datafiles and the oracle software.

2)Most important step TEST WHEATHER YOUR COLD BACKUP ACTUALLY WORKS BY RESTORING IT ON A IDENTICAL SYSTEM.I CANT EMPHASIZE THSI POINT MORE.


2)Since your planning to take change of database from oracle to oracle.I suggest you take an export of the full database .Craete a database on solaris using the solaris cd and import it into sun solaris after creating the database there.

3)Now you can go ahead and install the applications and binaries to which are platform specific.

4)Perform some tests on the migrated sun platform ...........
you can check the import log,check wheather all objects have been imported.....and run the application and see.

5)Take a cold backup of the new database on sun-OS.


thats it .Do thsi excersise on some holiday or when the tarffic is low.Just in case somethin goes wrong you can fall back upon your cold backup..


hope thsi helps

regards
hrishy