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Geographical clustering for DB2

P: n/a
Hi,

Does anyone know if DB2 has the capability to cluster in an
active/active mode over geographical distances.

I am aware of the replication tools and HADR capabilities but this is
more active/passive.

I know that the capability exists within the Oracle RAC product

thanks
Michael

Apr 24 '06 #1
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4 Replies


P: n/a
torrance_bloke wrote:
Hi,

Does anyone know if DB2 has the capability to cluster in an
active/active mode over geographical distances.

I am aware of the replication tools and HADR capabilities but this is
more active/passive.

I know that the capability exists within the Oracle RAC product

thanks
Michael

Actually, the capability does not exist within Oracle RAC. From what I
understand, Oracle RAC is a local clustering solution only.

HADR can be used locally or over geographical distances.

What is the business requirement driving the need for active-active?

Larry Edelstein
Apr 24 '06 #2

P: n/a
Ian
torrance_bloke wrote:
Hi,

Does anyone know if DB2 has the capability to cluster in an
active/active mode over geographical distances.


You can do this at the app layer with products like Avokia or xkoto,
or at the storage layer.

However, DB2 does not support this inside of the engine.

Apr 24 '06 #3

P: n/a
Larry wrote:
Actually, the capability does not exist within Oracle RAC. From what I
understand, Oracle RAC is a local clustering solution only.


Actually some people are indeed doing 'stretch' clusters with RAC, with
the nodes seperated by some kilometers (usually in the low 10's).

Useful, but does not replace a true MAA environment using both RAC and
Data Guard. See
http://www.oracle.com/technology/dep...hoices_PPT.pdf
for some discussion of the pros and cons of each approach.
Apr 28 '06 #4

P: n/a
Hi, I'm an ITS at xkoto.

Ian is correct, we do provide this capablity for DB2.

Our database load balancer can cluster your database across remote
active database servers over tcp/ip.

Drop me an email if your interested in more info. If you're in contact
with IBM, you can also arrange a PoT of our technology through them.

May 4 '06 #5

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