on 10-19-2012 3:58 AM
Hello There,
I am wondering if anyone can share thier expreinces in Migrating the Oracle database from Windows to Linux (On VM-Ware), and we talking about 2TB to 3TB database. What should be looking for this type of migrations? Any suggestions or advise much appreicated.
Thanks,
Kumar
Hello Kumar,
there is a simple and in most cases much faster approach called "Transportable Database" as the endianness does not change from Windows to Linux. The speed limit is only your I/O subsystem.
I have written a blog about that procedure long time ago (for HP-UX to AIX), but i have performed this procedure for Windows to Linux several times as well.
Blog: [Oracle] Migrating SAP systems on Oracle with less effort
Regards
Stefan
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Thank you all for your kind responses. Here is my database endiness:
What type of Support SAP Provides? Are they any impact on choosing this path vs Trandtional R3Load export/import?
7 Microsoft Windows IA (32-bit) Little
10 Linux IA (32-bit) Little
5 HP Tru64 UNIX Little
11 Linux IA (64-bit) Little
15 HP Open VMS Little
8 Microsoft Windows IA (64-bit) Little
13 Linux x86 64-bit Little
12 Microsoft Windows x86 64-bit Little
17 Solaris Operating System (x86) Little
19 HP IA Open VMS Little
20 Solaris Operating System (x86-64) Little
Hi,
if your source DB is not yet compressed, you might like to get compression as
a benefitial part of the migration with R3load. With the other method you will get a more or less
1:1 clone of your DB. This will usually be finished quicker, but if your migration timeframe
is large enough, you might like to get compression in addition.
Volker
It will be a heterogeneous system migration. Plenty of info on this available.
Take a look at this for virtualization guidelines since it will go on vmware: Note 1492000 - General Support Statement for Virtual Environments
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Dear Kumar,
As you are migrating on Vmware make sure you have implemented all the recommendations as per
SAP Note 1122388 - Linux: VMware vSphere configuration guidelines. Most of the recommendations for Vmware team.
This will be a heterogeneous system copy.
To reduce the time you can use Migration package splitting technique.
Plan to do it on Staging server first and repeat it 2-3 times to reduce the downtime.
Regards,
Sahil
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