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Peoplesoft on Federated UDB?

Anyone using Peoplesoft on a Federated UDB
(shared nothing)Environ ment on Open System Platforms?
Preferably AIX, but any war stories would be good.

TEA
EB-C
Nov 12 '05
96 6281
Blair Adamache wrote:
With User-Defined Functions, all sorts of things are possible - one
could move the leap day from February to January so we'd have a January
32. If necessary, truncate all other months to 28 days, lengthen January
to 58 days, and will ship in January, meeting the TPC 6 month requirement.

Serge Rielau wrote:
Not sure the TPC comittee got that iodea when Oracle redefined January
30th.
http://www.tpc.org/tpcc/results/tpcc...p?id=103073004

Cheers
Serge

PS: I can't help it with the fucntion. Oracle customers just can't
wait to jump ship. It's empathy you know.


I'm still trying to figure out why a benchmark on unreleased Beta
software has any meaning. From what I've seen it has gotten better
with each subsequent Beta release. I can't imagine why they would want
to use the older slower numbers.

--
Daniel Morgan
http://www.outreach.washington.edu/e...ad/oad_crs.asp
http://www.outreach.washington.edu/e...oa/aoa_crs.asp
da******@x.wash ington.edu
(replace 'x' with a 'u' to reply)

Nov 12 '05 #61
> Mark A wrote, liberally but not maliciously edited by Blair:
... Share nothing usually does not yield the best price/performance

"Blair Adamache" <ba*******@2muc hspam.yahoo.com > wrote in message news:bv******** **@hanover.toro lab.ibm.com... Except here, where shared nothing databases seem to do okay in
price/performance:

http://www.tpc.org/tpch/results/tpch...ype=&version=2

Blair, I specifically mentioned that the IBM eServer 325 "may" challenge the
price performance barrier of shared nothing vs. SMP nodes. However (and I
getting very tired of repeating myself) the IBM TPC benchmarks you
referenced did not use share nothing. There were two partitions per physical
node. That means on each physical node (or cluster as TPC calls it) the two
partitions share the following components:

- System Memory
- Cisco 1000BASE-T Gigabit GBIC Module (network interface card to
communicate with other nodes)
- 18.2GB 15K Ultra160 SCSI Hot-Swap Drive (not for DB2, but for OS, swap
space, etc.)
- IBM FC2-133 Host Bus Adapter
- Qlogic QLA 2342 Host Bus Adapter

Note that one of the Host Bus Adapters (not sure which one) is shared for
access to the external Storage Subsystem where the DB2 database resides. The
other is for the internal hard drive mentioned above.

The partitions did not really share processors because there were 2
processors on each node (with 2 partitions).

I don't really understand why "share nothing" is so difficult to understand
and why so many people claim to have used it, when in fact they did not. I
would, however, be interested to see the same benchmark tested with a true
share nothing environment. That would mean either reducing the partitions to
8 (from 16) for the 8 physical nodes (blades) used in the benchmark, or
increasing the number of physical nodes (blades) to 16 to match the 16
partitions used in the benchmark.
Nov 12 '05 #62
Sorry Mark, I don't agree.
Of course that is using 'shared nothing' architecture.
Between the physical nodes nothing is shared.

Mark A wrote:
Mark A wrote, liberally but not maliciously edited by Blair:
>...
>
>
Share nothing usually does not yield the best price/performance

"Blair Adamache" <ba*******@2muc hspam.yahoo.com > wrote in message

news:bv******* ***@hanover.tor olab.ibm.com...

Except here, where shared nothing databases seem to do okay in
price/performance:

http://www.tpc.org/tpch/results/tpch...ype=&version=2
Blair, I specifically mentioned that the IBM eServer 325 "may" challenge the
price performance barrier of shared nothing vs. SMP nodes. However (and I
getting very tired of repeating myself) the IBM TPC benchmarks you
referenced did not use share nothing. There were two partitions per physical
node. That means on each physical node (or cluster as TPC calls it) the two
partitions share the following components:

- System Memory
- Cisco 1000BASE-T Gigabit GBIC Module (network interface card to
communicate with other nodes)
- 18.2GB 15K Ultra160 SCSI Hot-Swap Drive (not for DB2, but for OS, swap
space, etc.)
- IBM FC2-133 Host Bus Adapter
- Qlogic QLA 2342 Host Bus Adapter

Note that one of the Host Bus Adapters (not sure which one) is shared for
access to the external Storage Subsystem where the DB2 database resides. The
other is for the internal hard drive mentioned above.

The partitions did not really share processors because there were 2
processors on each node (with 2 partitions).

I don't really understand why "share nothing" is so difficult to understand
and why so many people claim to have used it, when in fact they did not. I
would, however, be interested to see the same benchmark tested with a true
share nothing environment. That would mean either reducing the partitions to
8 (from 16) for the 8 physical nodes (blades) used in the benchmark, or
increasing the number of physical nodes (blades) to 16 to match the 16
partitions used in the benchmark.


--
Anton Versteeg
IBM Certified DB2 Specialist
IBM Netherlands

Nov 12 '05 #63
>"Anton Versteeg" <an************ @nnll.iibbmm.co m> wrote in message
news:40******** ******@nnll.iib bmm.com...
Sorry Mark, I don't agree.
Of course that is using 'shared nothing' architecture.
Between the physical nodes nothing is shared.


Yes, between the nodes there is no sharing (by definition), but within the
nodes there is sharing. So the architecture used in the benchmark Blair
referred to is neither share everything (all partitions on the same node),
nor is it share nothing (each partition on its own node). It is in-between
the two.

Of course with only 2 partitions per node, it is "close" to share nothing
(especially when compared to the usual 4-6 partitions per node frequently
used on a 8 processor node).

But share "nothing" means NOTHING; NOTA; ZERO SHARING; NILL; I don't know
how else to say it.

2 partitions per node is not share nothing. Close, but no cigar.

You can disagree all you want, but that does not make it so.
Nov 12 '05 #64
OK, come up with a better word then.
It seems the majority (when sover at least) understands shared nothing
in the context of DBMS to relate to the view of the DBMS and not to the
hardware view.
Could we just agree on the fact that the meaning of shared nothing in
thsi context might have changed a bit over the last 20 years for all the
valid reasons you brought up?

Cheers
Serge

Nov 12 '05 #65
"Serge Rielau" <sr*****@ca.e ye-be-em.com> wrote in message
news:bv******** **@hanover.toro lab.ibm.com...
OK, come up with a better word then.
It seems the majority (when sover at least) understands shared nothing
in the context of DBMS to relate to the view of the DBMS and not to the
hardware view.
Could we just agree on the fact that the meaning of shared nothing in
thsi context might have changed a bit over the last 20 years for all the
valid reasons you brought up?

Cheers
Serge

IMO no, because it is important to distinguish having 2 partitions per node,
from having 4 partitions or 6 partitions per node, even when there are
multiple nodes. Saying that both are "shared nothing" is incorrect IMO, and
blurs the distinction between them, even though they should scale a little
differently.

It is still possible to have shared nothing (1 partition per node) and the
eServer 325 makes it more attractive than ever before.

I think that some people are too convinced that shared nothing is always the
best solution, and because of that, the marketing people are trying to latch
on to a label that doesn't really fit.

Even though hardware and software advances have made sharing more acceptable
in terms of performance and scalability, there still can be some bottlenecks
when partitions share a node.
Nov 12 '05 #66
In article <1075131919.777 753@yasure>, Daniel Morgan
(da******@x.was hington.edu) says...
Serge Rielau wrote:
Daniel,

Maybe the poster had what you had earlier....


Most likely. Great latitude should always be given early in the morning
late at night, and on days whose name ends with the letter 'Y'.


Yesterday ?
Nov 12 '05 #67
But not tomorrow.

Gert van der Kooij wrote:
In article <1075131919.777 753@yasure>, Daniel Morgan
(da******@x.was hington.edu) says...
Serge Rielau wrote:

Daniel,

Maybe the poster had what you had earlier....


Most likely. Great latitude should always be given early in the morning
late at night, and on days whose name ends with the letter 'Y'.

Yesterday ?


Nov 12 '05 #68
Mark A wrote:
I think that some people are too convinced that shared nothing is always the
best solution, and because of that, the marketing people are trying to latch
on to a label that doesn't really fit.


Well you won't have to worry about the Oracle people thinking that. They
dropped that architecture many years ago. Doubt the mainframe people
using DB2 will jump behind that slogan either so you're pretty safe. ;-)

--
Daniel Morgan
http://www.outreach.washington.edu/e...ad/oad_crs.asp
http://www.outreach.washington.edu/e...oa/aoa_crs.asp
da******@x.wash ington.edu
(replace 'x' with a 'u' to reply)

Nov 12 '05 #69
Ah.. yes. That is the beauty of marketing.
When a vendor publishes a benhcmark it gives braggin rights.
From full page adds to analysts attention.
The whole idea is to push a product.
Now if that product does not ship within the timeframe indicated then
the result must be withdrawn.
However all the marketing cannot be undone.
One can slip in the odd case, but if it happens regularly then first the
reputation for the vendor goes, and then the one of the benchmark
because it's benchmarking prototypes rather than products.

Cheers
Serge
Nov 12 '05 #70

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