Migration Oracle db from solaris to aix

Hi,
I would like to ask you for a best way how to do..
We have a large international Oracle migration effort from Solaris to AIX. We have some challenges where a standard export/import will not work due to the extended distance between sites. As an example we are migrating from Japan to Texas.
What is the best tool to use?
I looked around and I found Oracle Golden Gate.
do you have any other idea?
Thank you,
Regards,
Tom

807813 wrote:
I dont have more info about the project but there will databases (maybe 500) with different sizes (x MB - x TB) and there could be single and RAC.
I am looking for any tool/utility where I will be able to prepare migration document which could be used as baseline for migration all of them.I do not think it will be possible to use one approach for all DBs in your case. You should split DBs into groups you may use different approaches.
Among 500 DBs will be:
a) databases with "low availability" requirements where long downtime is possible. so you can stop app, take an export, import into remote db, re-target app to new db.
b) databases where only short downtime is possible. then you can use DataGuard or some replication technologies (OGG, Shareplex, DataCurrents) to make "final sync".
c) databases with "high availability" requirements where NO downtime is possible. Here you can use some replication technologies (i.e. DataCurrents and may be others can do it). First you copy data to remote DB and "remember" SCN you got the source dump, then you keep replicating all changes starting from this SCN. As soon as remote DB becomes in sync, you quickly switch the app to new DB.
But I never did migration accross states (more than 1000 miles).Distance does not matter. You should have good bandwidth network connection between sites.

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