I
understand the argument, Rodd and it raises three
points/questions:
1) I
can always back up a "state" ( part of a federation?) just like EMC/SRDF/BFD SAN
does
for the Oracle solution, and at less cost,
and
2) Do
you believe you can simply "add nodes" to an OPS farm to improve performance? I
have
personally never gone over a humble two nodes in OPS, and
even then, locking issues must
be addressed. One way out of this is the geographically
segregate and partition the data. But
this would be "federated." In a pure
play OPS scenario, I would imagine the system
would
choke
to death after the fourth or sixth node, without special tweaks like
partitioning, either
by
data or application.
3) Loss of a SS "state", just like loss of an oracle
partition, does not "kill the operation of the system".
here, they are the same.
......
just a thought......
-----Original Message-----
From: Holman, Rodney [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, February 06, 2001 5:21 AM
To: Multiple recipients of list ORACLE-L
Subject: RE: OT RE: Async I/O on Windows - WHAT is a FEDERATED DATABASE
From: Holman, Rodney [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, February 06, 2001 5:21 AM
To: Multiple recipients of list ORACLE-L
Subject: RE: OT RE: Async I/O on Windows - WHAT is a FEDERATED DATABASE
Ross,I was at the Open World conference session where Jeremy Burton made the comments about clustering, OPS, data segmentation, etc. The data segmentation part was about MS SQLServer, and about how it creates significant work to add cluster nodes. C|net has their terms and comments a little scrambled. The Oracle 9i solution used OPS for the instances and an EMC/SRDF SAN for the data storage. Each OPS cluster node had full access to every piece of data. By doing this no node is a single point of failure (as Larry demonstrated and was chastised for by MS). Also it creates greater capability for scalability. Just configure and add a node and it improves performance (also part of Larry's demo). As described with the MS federated database configuration you would need to resegment the data to add a node. This would then destabilize the system even further by adding another single point of failure. Failure of an OPS cluster node with the data on a SAN with redundancy, such as the EMC/SRDF option, only decreases performance, it doesn't kill the operation of the system.Rodd Holman-----Original Message-----
From: Mohan, Ross [mailto:[EMAIL PROTECTED]]
Sent: Monday, February 05, 2001 5:09 PM
To: Multiple recipients of list ORACLE-L
Subject: RE: OT RE: Async I/O on Windows - WHAT is a FEDERATED DATABASEVery Interesting! It appears Oracle 9i, is, in fact, a Hybrid Federated Database!
http://news.cnet.com/news/0-1003-200-2897140.html?tag=st.ne.ni.metacomm.ni
A snippet:
