How to update AND move between platforms with different Endians...?

Hi all

I have two databases - a 500 GB - and the other 50 GB running on 10.2.0.4 on AIX 64-bit. They are Production systems.

I have to move them to a new Linux (RHEL 5.6 - 64-bit) server that will run 11.2.0.2.

For the test, I'm OK with what is done with Data Pump. But for the passage be made to the "new Prod", this will result in the value of the hours of downtime and it is a critical system, so I will try to mitigate that as much as I can.

Naively, I was hoping to use RMAN to both move the databases from one box to the other, but also to upgrade. I say to myself that I would do the following (as directed by Metalink 369644.1) I have a catalog of recovery, etc, etc:

Install the binaries on the server of new Prod
Connect to the RCAT, and restore the database and recovery of a pit
To upgrade the database manually by putting the DB in the UPGRADE to STARTUP and running of the catupgrd.sql

Unfortunately, I didn't know that the Endian differed between AIX and RHEL (according to 1079563.1). Oops.

It's not like I'll be able to use Transportable Tablespaces (according to 243304.1) or without having first to migrate the data through a 10 DB g and then upgrade.

So my options seem to be:
(a) data pump and suck the failure
(b) move the portable data using Tablespaces to 10.2.0.4 and then switch to 11.2.0.2.

Are there other options? I hope that a logical standby would work in this case to the rolling upgrade, but suspect that the different o/s AND the different Endian would sabotage the idea...

Mark

Maybe, I have more experience using concurrent export/import using the traditional exp/imp utility that using the parallel option on expdp/impdp. One thing you can do with exp/imp you can't do with expdp/impdp is export to a named pipe, start a remove copy channel named on the new server and then start the import from the channel named on the new server so that you import all still exporting the same objects. We use tables = exports when we did back when the tables = parameter could handle only 99 tables. We had a separate export for each table and then a set of exports to 99 tables for each of the other tasks run simultaneous processes of 6 to 12.

One thing to look at is data history. Potentially some tables can be moved before the majority of the application objects and replaced by the synonym to remote objects.

Really static tables could also be moved beforehand, even only a day or two before reducing the number of objects to move.

Build the new database in noarchive log mode to save a treatment and he switch and immediately save when you migrate.

And Yes, if the two platforms appear in the name of the view I gave you so you can use transportable tablespaces with the rman conversion step. Instructions for use rman to perform the conversion are in the manual of rman.

HTH - Mark D Powell.

Tags: Database

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