Re: Oracle Real Application Clusters
Is it possible to download the ORAC software from some site, if so where from..?
Re: Oracle Real Application Clusters
On Wed, Oct 23, 2002 at 03:19:21PM -0800, Tim Gorman wrote: A couple of anecdotes to consider: a.. Some folks from the Oak Table forum (www.oaktable.net) recently (last July) constructed a 10-node cluster of Linux laptops right on the conference floor at Oracle Open World in Copenhagen, Denmark. Information is available at http://investor.cnet.com/investor/news/newsitem/0-9900-1028-20212349-0.html?tag=ats. So it can definitely be done on the cheap! hmm...first time I've ever seen NetApp and cheap used together. What is the real poor man's shared disk architecture? NFS? === Ray Stell [EMAIL PROTECTED] (540) 231-4109 KE4TJC28^D -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Ray Stell INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
RE: Oracle Real Application Clusters
Title: RE: Oracle Real Application Clusters If I remember right we had some problems with gsd and nfs ... Raj __ Rajendra Jamadagni MIS, ESPN Inc. Rajendra dot Jamadagni at ESPN dot com Any opinion expressed here is personal and doesn't reflect that of ESPN Inc. QOTD: Any clod can have facts, but having an opinion is an art! -Original Message- From: Ray Stell [mailto:[EMAIL PROTECTED]] Sent: Thursday, October 24, 2002 9:34 AM To: Multiple recipients of list ORACLE-L Subject: Re: Oracle Real Application Clusters On Wed, Oct 23, 2002 at 03:19:21PM -0800, Tim Gorman wrote: A couple of anecdotes to consider: a.. Some folks from the Oak Table forum (www.oaktable.net) recently (last July) constructed a 10-node cluster of Linux laptops right on the conference floor at Oracle Open World in Copenhagen, Denmark. Information is available at http://investor.cnet.com/investor/news/newsitem/0-9900-1028-20212349-0.html?tag=ats. So it can definitely be done on the cheap! hmm...first time I've ever seen NetApp and cheap used together. What is the real poor man's shared disk architecture? NFS? === Ray Stell [EMAIL PROTECTED] (540) 231-4109 KE4TJC 28^D -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Ray Stell INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services - To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). *This e-mail message is confidential, intended only for the named recipient(s) above and may contain information that is privileged, attorney work product or exempt from disclosure under applicable law. If you have received this message in error, or are not the named recipient(s), please immediately notify corporate MIS at (860) 766-2000 and delete this e-mail message from your computer, Thank you.*1
RE: Oracle Real Application Clusters
Here are the papers I found. A word of caution: these are written by sales critters so as a hard-core techie if you read more than 3 papers your head will explode. http://technet.oracle.com/deploy/availability/techlisting.html http://technet.oracle.com/deploy/availability/techlisting.html Dennis Williams DBA, 40%OCP Lifetouch, Inc. [EMAIL PROTECTED] -Original Message- Sent: Thursday, October 24, 2002 12:23 AM To: Multiple recipients of list ORACLE-L Hi, Could you please give me the links to these white papers...? DENNIS WILLIAMS [EMAIL PROTECTED] Sent by: [EMAIL PROTECTED] 10/23/02 09:53 PM Please respond to ORACLE-L To:Multiple recipients of list ORACLE-L [EMAIL PROTECTED] cc: Subject:RE: Oracle Real Application Clusters Tim - Gee, during the original presentation I attended, RAC was presented as a cost-saving feature. Something about being able to use a lot of cheap Linux servers. This stuck me as a little odd at the time. Just now, I looked at the white papers that Oracle posts on the subject, and I didn't see the cost-saving aspect mentioned. Or maybe Oracle is still getting the Linux ball rolling. Dennis Williams DBA, 40%OCP Lifetouch, Inc. [EMAIL PROTECTED] -Original Message- Sent: Wednesday, October 23, 2002 9:05 AM To: Multiple recipients of list ORACLE-L Aye to that, but you'll need at least two, possibly three, identical clusters, not just one. One cluster for production and an identical cluster for QA/Test, and possibly one for development (though that last is often regarded as unnecessary). Skimping on the QA/Test environment is the leading edge of failure... RAC itself requires additional DBA expertise as well as additional OS SysAdmin expertise for cluster hardware/OS, each of which costs more to obtain/maintain (either by hiring experienced/talented or training to build or both). Clustering is not a low-cost solution from any perspective... RAC is a solution for certain specific high-availability and high-scaleability requirements (not including data-center failure, a.k.a. disaster-recovery), so it's a good idea to be certain that you are planning a solution that meets your own specific requirements before proceeding. RAC should not be a high-level management decision -- it is a specific technical solution to meet specific technical requirements, which themselves should have been derived from the requirements of the business. There are several other possible H/A solutions in Oracle9i (i.e. physical standby, logical standby, advanced replication, OS failover solutions, RAC, etc), each of which addresses the same H/A problems in different ways with differing levels of complexity and cost. - Original Message - To: Multiple mailto:ORACLE-L;fatcity.com recipients of list ORACLE-L Sent: Wednesday, October 23, 2002 6:43 AM IMHO, the main requirement is that you have to have a system that needs to be up 24x7 on a cluster and your ability to fork enough money to Oracle and your server vendor (to get two identical machines) and your networking vendor (for redundant network connections). Rest everything is easy ... Raj __ Rajendra Jamadagni MIS, ESPN Inc. Rajendra dot Jamadagni at ESPN dot com Any opinion expressed here is personal and doesn't reflect that of ESPN Inc. QOTD: Any clod can have facts, but having an opinion is an art! -Original Message- Sent: Wednesday, October 23, 2002 3:04 AM To: Multiple recipients of list ORACLE-L Dear All, We are planning to implement ORAC for our application, can anybody tell me where to get good information on the system requirements for implementing the same. Regards Prem -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: DENNIS WILLIAMS INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: DENNIS WILLIAMS INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name
Re: Oracle Real Application Clusters
NetApp is NFS; so are all current NAS products... The phrases NetApp and cheap are *always* used together -- it is their most compelling feature. CFOs love NetApps. For database usage however, they are best used in non-demanding situations (i.e. low I/O volumes). The phrase filer is very apt -- their very best application is simple file-serving; Windows network drive or UNIX file-system. But not underneath any I/O-intensive application such as a busy database-based application. Any I/O subsystem (such as NAS) that relies on a cache for performance is simply pure trouble for busy databases -- DEC knew it in the 80s and EMC discovered it in the 90s. Now NetApp knows in the 00s (does that rhyme?)... - Original Message - To: Multiple recipients of list ORACLE-L [EMAIL PROTECTED] Sent: Thursday, October 24, 2002 7:34 AM On Wed, Oct 23, 2002 at 03:19:21PM -0800, Tim Gorman wrote: A couple of anecdotes to consider: a.. Some folks from the Oak Table forum (www.oaktable.net) recently (last July) constructed a 10-node cluster of Linux laptops right on the conference floor at Oracle Open World in Copenhagen, Denmark. Information is available at http://investor.cnet.com/investor/news/newsitem/0-9900-1028-20212349-0.html? tag=ats. So it can definitely be done on the cheap! hmm...first time I've ever seen NetApp and cheap used together. What is the real poor man's shared disk architecture? NFS? === Ray Stell [EMAIL PROTECTED] (540) 231-4109 KE4TJC28^D -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Ray Stell INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Tim Gorman INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
Re: Oracle Real Application Clusters
On Thu, Oct 24, 2002 at 05:43:38AM -0800, Jamadagni, Rajendra wrote: If I remember right we had some problems with gsd and nfs ... could you elaborate? === Ray Stell [EMAIL PROTECTED] (540) 231-4109 KE4TJC28^D -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Ray Stell INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
Re: Oracle Real Application Clusters
On Thu, Oct 24, 2002 at 06:53:27AM -0800, Tim Gorman wrote: NetApp is NFS; so are all current NAS products... The phrases NetApp and cheap are *always* used together -- it is their most compelling feature. CFOs love NetApps. For database usage however, The netapp sales guy I talked with must have been trying to make his quota for that quarter in one stop. Their storage was off the charts when I talked to them, but it has been awhile. So, for testing of rac I could just use nfs disks mounted r/w from multiple linux boxes? I think I'll try it unless someone knows that dog won't hunt. === Ray Stell [EMAIL PROTECTED] (540) 231-4109 KE4TJC28^D -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Ray Stell INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
RE: Oracle Real Application Clusters
Title: RE: Oracle Real Application Clusters We had the user which owns oracle was nfs mounted across two machines using nfs. i.e. user oraclei home directory was nfs mounted across tow machines. When we used srvctl to start instances occasionally it used to hang when bringing up the 'other side'. Also when nfs had the problem, it would crash. Our Unix guys fixed the problem (I don't know how) and ORacle is looking into the problem. Raj __ Rajendra Jamadagni MIS, ESPN Inc. Rajendra dot Jamadagni at ESPN dot com Any opinion expressed here is personal and doesn't reflect that of ESPN Inc. QOTD: Any clod can have facts, but having an opinion is an art! -Original Message- From: Ray Stell [mailto:[EMAIL PROTECTED]] Sent: Thursday, October 24, 2002 10:39 AM To: Multiple recipients of list ORACLE-L Subject: Re: Oracle Real Application Clusters On Thu, Oct 24, 2002 at 05:43:38AM -0800, Jamadagni, Rajendra wrote: If I remember right we had some problems with gsd and nfs ... could you elaborate? === Ray Stell [EMAIL PROTECTED] (540) 231-4109 KE4TJC 28^D This e-mail message is confidential, intended only for the named recipient(s) above and may contain information that is privileged, attorney work product or exempt from disclosure under applicable law. If you have received this message in error, or are not the named recipient(s), please immediately notify corporate MIS at (860) 766-2000 and delete this e-mail message from your computer, Thank you.*2
RE: Oracle Real Application Clusters
IMHO, the main requirement is that you have to have a systemthat needs to be up 24x7 on a cluster and your ability to fork enough money to Oracle and your server vendor (to get two identical machines) and your networking vendor (for redundant network connections). Rest everything is easy ... Raj __ Rajendra Jamadagni MIS, ESPN Inc. Rajendra dot Jamadagni at ESPN dot com Any opinion expressed here is personal and doesn't reflect that of ESPN Inc. QOTD: Any clod can have facts, but having an opinion is an art! -Original Message-From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]Sent: Wednesday, October 23, 2002 3:04 AMTo: Multiple recipients of list ORACLE-LSubject: Oracle Real Application ClustersDear All, We are planning to implement ORAC for our application, can anybody tell me where to get good information on the system requirements for implementing the same. Regards Prem *This e-mail message is confidential, intended only for the named recipient(s) above and may contain information that is privileged, attorney work product or exempt from disclosure under applicable law. If you have received this message in error, or are not the named recipient(s), please immediately notify corporate MIS at (860) 766-2000 and delete this e-mail message from your computer, Thank you.*1
Re: Oracle Real Application Clusters
Aye to that, but you'll need at least two, possibly three, identical clusters, not just one. One clusterfor production and an identicalcluster for QA/Test, and possibly one for development (though that last is often regarded as unnecessary). Skimping on the QA/Test environment is the leading edge offailure... RAC itself requires additional DBA expertise as well as additional OS SysAdmin expertise for cluster hardware/OS, each of which costs moreto obtain/maintain (either by hiring experienced/talented or training to build or both).Clustering is not a low-cost solution from any perspective... RAC is a solution for certain specific high-availability andhigh-scaleabilityrequirements (not including "data-center failure",a.k.a. disaster-recovery), so it's a good idea to be certain that you are planning a solution that meets your own specific requirements before proceeding. RACshould not be a high-level management decision -- it is a specific technical solution to meet specific technical requirements, which themselves should have been derived from the requirements of the business. There areseveral other possible H/A solutions in Oracle9i (i.e. physical standby, logical standby, advanced replication, OS failover solutions, RAC, etc), each of which addresses the same H/A problems in different ways with differing levels of complexity and cost. - Original Message - From: Jamadagni, Rajendra To: Multiple recipients of list ORACLE-L Sent: Wednesday, October 23, 2002 6:43 AM Subject: RE: Oracle Real Application Clusters IMHO, the main requirement is that you have to have a systemthat needs to be up 24x7 on a cluster and your ability to fork enough money to Oracle and your server vendor (to get two identical machines) and your networking vendor (for redundant network connections). Rest everything is easy ... Raj __ Rajendra Jamadagni MIS, ESPN Inc. Rajendra dot Jamadagni at ESPN dot com Any opinion expressed here is personal and doesn't reflect that of ESPN Inc. QOTD: Any clod can have facts, but having an opinion is an art! -Original Message-From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]Sent: Wednesday, October 23, 2002 3:04 AMTo: Multiple recipients of list ORACLE-LSubject: Oracle Real Application ClustersDear All, We are planning to implement ORAC for our application, can anybody tell me where to get good information on the system requirements for implementing the same. Regards Prem
RE: Oracle Real Application Clusters
You are right Tim (now you may ask "what's new in
that?")
We have a production cluster, development cluster and (possible a standby
cluster) all identical.
Raj
__
Rajendra
Jamadagni
MIS, ESPN Inc.
Rajendra dot Jamadagni at ESPN dot
com
Any opinion expressed here is
personal and doesn't reflect that of ESPN Inc.
QOTD: Any clod can have facts, but
having an opinion is an art!
-Original Message-From: Tim Gorman
[mailto:[EMAIL PROTECTED]]Sent: Wednesday, October 23, 2002 10:05
AMTo: Multiple recipients of list ORACLE-LSubject: Re:
Oracle Real Application Clusters
Aye to that, but you'll need at least two,
possibly three, identical clusters, not just one. One clusterfor
production and an identicalcluster for QA/Test, and possibly one for
development (though that last is often regarded as unnecessary).
Skimping on the QA/Test environment is the leading edge
offailure...
RAC itself requires additional DBA expertise as
well as additional OS SysAdmin expertise for cluster hardware/OS, each of
which costs moreto obtain/maintain (either by hiring
experienced/talented or training to build or both).Clustering is
not a low-cost solution from any perspective...
RAC is a solution for certain specific
high-availability andhigh-scaleabilityrequirements (not including
"data-center failure",a.k.a. disaster-recovery), so it's a good idea to
be certain that you are planning a solution that meets your own specific
requirements before proceeding. RACshould not be a high-level
management decision -- it is a specific technical solution to meet specific
technical requirements, which themselves should have been derived from the
requirements of the business. There areseveral other possible H/A
solutions in Oracle9i (i.e. physical standby, logical standby, advanced
replication, OS failover solutions, RAC, etc), each of which addresses the
same H/A problems in different ways with differing levels of complexity and
cost.
- Original Message -
From:
Jamadagni, Rajendra
To: Multiple recipients of list ORACLE-L
Sent: Wednesday, October 23, 2002 6:43
AM
Subject: RE: Oracle Real Application
Clusters
IMHO, the main requirement is that you have to have a
systemthat needs to be up 24x7 on a cluster and your ability to fork
enough money to Oracle and your server vendor (to get two identical
machines) and your networking vendor (for redundant network
connections).
Rest everything is easy ...
Raj
__
Rajendra
Jamadagni
MIS, ESPN Inc.
Rajendra dot Jamadagni at ESPN
dot com
Any opinion expressed here is
personal and doesn't reflect that of ESPN Inc.
QOTD: Any clod can have facts,
but having an opinion is an
art!
-Original Message-From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]Sent: Wednesday, October 23, 2002 3:04
AMTo: Multiple recipients of list ORACLE-LSubject:
Oracle Real Application ClustersDear All, We are planning to implement ORAC for our application, can anybody
tell me where to get good information on the system requirements for
implementing the same. Regards Prem
This e-mail
message is confidential, intended only for the named recipient(s) above and may
contain information that is privileged, attorney work product or exempt from
disclosure under applicable law. If you have received this message in error, or are
not the named recipient(s), please immediately notify corporate MIS at (860) 766-2000
and delete this e-mail message from your computer, Thank
you.*2
RE: Oracle Real Application Clusters
We are performing a rather detailed POC of RAC within a SUN environment... Be glad to share some details once we complete this to those interestedI'm hoping for a detailed document with detailed use cases... But that does assume those who are in the separate areas will accomplish that as desired... thanks greg -Original Message- Sent: Wednesday, October 23, 2002 10:05 AM To: Multiple recipients of list ORACLE-L Aye to that, but you'll need at least two, possibly three, identical clusters, not just one. One cluster for production and an identical cluster for QA/Test, and possibly one for development (though that last is often regarded as unnecessary). Skimping on the QA/Test environment is the leading edge of failure... RAC itself requires additional DBA expertise as well as additional OS SysAdmin expertise for cluster hardware/OS, each of which costs more to obtain/maintain (either by hiring experienced/talented or training to build or both). Clustering is not a low-cost solution from any perspective... RAC is a solution for certain specific high-availability and high-scaleability requirements (not including data-center failure, a.k.a. disaster-recovery), so it's a good idea to be certain that you are planning a solution that meets your own specific requirements before proceeding. RAC should not be a high-level management decision -- it is a specific technical solution to meet specific technical requirements, which themselves should have been derived from the requirements of the business. There are several other possible H/A solutions in Oracle9i (i.e. physical standby, logical standby, advanced replication, OS failover solutions, RAC, etc), each of which addresses the same H/A problems in different ways with differing levels of complexity and cost. - Original Message - To: Multiple mailto:ORACLE-L;fatcity.com recipients of list ORACLE-L Sent: Wednesday, October 23, 2002 6:43 AM IMHO, the main requirement is that you have to have a system that needs to be up 24x7 on a cluster and your ability to fork enough money to Oracle and your server vendor (to get two identical machines) and your networking vendor (for redundant network connections). Rest everything is easy ... Raj __ Rajendra Jamadagni MIS, ESPN Inc. Rajendra dot Jamadagni at ESPN dot com Any opinion expressed here is personal and doesn't reflect that of ESPN Inc. QOTD: Any clod can have facts, but having an opinion is an art! -Original Message- Sent: Wednesday, October 23, 2002 3:04 AM To: Multiple recipients of list ORACLE-L Dear All, We are planning to implement ORAC for our application, can anybody tell me where to get good information on the system requirements for implementing the same. Regards Prem -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Loughmiller, Greg INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
RE: Oracle Real Application Clusters
Tim - Gee, during the original presentation I attended, RAC was presented as a cost-saving feature. Something about being able to use a lot of cheap Linux servers. This stuck me as a little odd at the time. Just now, I looked at the white papers that Oracle posts on the subject, and I didn't see the cost-saving aspect mentioned. Or maybe Oracle is still getting the Linux ball rolling. Dennis Williams DBA, 40%OCP Lifetouch, Inc. [EMAIL PROTECTED] -Original Message- Sent: Wednesday, October 23, 2002 9:05 AM To: Multiple recipients of list ORACLE-L Aye to that, but you'll need at least two, possibly three, identical clusters, not just one. One cluster for production and an identical cluster for QA/Test, and possibly one for development (though that last is often regarded as unnecessary). Skimping on the QA/Test environment is the leading edge of failure... RAC itself requires additional DBA expertise as well as additional OS SysAdmin expertise for cluster hardware/OS, each of which costs more to obtain/maintain (either by hiring experienced/talented or training to build or both). Clustering is not a low-cost solution from any perspective... RAC is a solution for certain specific high-availability and high-scaleability requirements (not including data-center failure, a.k.a. disaster-recovery), so it's a good idea to be certain that you are planning a solution that meets your own specific requirements before proceeding. RAC should not be a high-level management decision -- it is a specific technical solution to meet specific technical requirements, which themselves should have been derived from the requirements of the business. There are several other possible H/A solutions in Oracle9i (i.e. physical standby, logical standby, advanced replication, OS failover solutions, RAC, etc), each of which addresses the same H/A problems in different ways with differing levels of complexity and cost. - Original Message - To: Multiple mailto:ORACLE-L;fatcity.com recipients of list ORACLE-L Sent: Wednesday, October 23, 2002 6:43 AM IMHO, the main requirement is that you have to have a system that needs to be up 24x7 on a cluster and your ability to fork enough money to Oracle and your server vendor (to get two identical machines) and your networking vendor (for redundant network connections). Rest everything is easy ... Raj __ Rajendra Jamadagni MIS, ESPN Inc. Rajendra dot Jamadagni at ESPN dot com Any opinion expressed here is personal and doesn't reflect that of ESPN Inc. QOTD: Any clod can have facts, but having an opinion is an art! -Original Message- Sent: Wednesday, October 23, 2002 3:04 AM To: Multiple recipients of list ORACLE-L Dear All, We are planning to implement ORAC for our application, can anybody tell me where to get good information on the system requirements for implementing the same. Regards Prem -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: DENNIS WILLIAMS INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
Re: Oracle Real Application Clusters
A couple of anecdotes to consider: Some folks from the "Oak Table" forum (www.oaktable.net)recently(last July)constructed a 10-node cluster of Linux laptops right on the conference floor at Oracle Open World in Copenhagen, Denmark. Information is available at http://investor.cnet.com/investor/news/newsitem/0-9900-1028-20212349-0.html?tag=ats. So it can definitely be done on the cheap! Some years ago (1994-96), I worked extensively on Oracle7 Parallel Server on IBM RS6000 SP environments. One of IBM's originally-statedintents with the RS6000 SP product line was to create "mainframe-class machines" using "low-cost, off-the-shelf RS6000 components". After a couple years of hard knocks and severely disappointed, deeply frustrated customers, IBM admitted (to their most iratecustomers) that the strategy of using off-the-shelf, less-robust components with the goal of high-availability does not work. The components themselves have to be "hardened" additionally, hardware and software,adding to the cost and slowing the release cycle. So, it can definitely be done. It can even be done cheap. But it's going to cost, later if not sooner... - Original Message - From: "DENNIS WILLIAMS" [EMAIL PROTECTED] To: "Multiple recipients of list ORACLE-L" [EMAIL PROTECTED] Sent: Wednesday, October 23, 2002 10:23 AM Subject: RE: Oracle Real Application Clusters Tim - Gee, during the original presentation I attended, RAC was presented as a cost-saving feature. Something about being able to use a lot of cheap Linux servers. This stuck me as a little odd at the time. Just now, I looked at the white papers that Oracle posts on the subject, and I didn't see the cost-saving aspect mentioned. Or maybe Oracle is still getting the Linux ball rolling. Dennis Williams DBA, 40%OCP Lifetouch, Inc. [EMAIL PROTECTED] -Original Message- Sent: Wednesday, October 23, 2002 9:05 AM To: Multiple recipients of list ORACLE-L Aye to that, but you'll need at least two, possibly three, identical clusters, not just one. One cluster for production and an identical cluster for QA/Test, and possibly one for development (though that last is often regarded as unnecessary). Skimping on the QA/Test environment is the leading edge of failure... RAC itself requires additional DBA expertise as well as additional OS SysAdmin expertise for cluster hardware/OS, each of which costs more to obtain/maintain (either by hiring experienced/talented or training to build or both). Clustering is not a low-cost solution from any perspective... RAC is a solution for certain specific high-availability and high-scaleability requirements (not including "data-center failure", a.k.a. disaster-recovery), so it's a good idea to be certain that you are planning a solution that meets your own specific requirements before proceeding. RAC should not be a high-level management decision -- it is a specific technical solution to meet specific technical requirements, which themselves should have been derived from the requirements of the business. There are several other possible H/A solutions in Oracle9i (i.e. physical standby, logical standby, advanced replication, OS failover solutions, RAC, etc), each of which addresses the same H/A problems in different ways with differing levels of complexity and cost. - Original Message - To: Multiple mailto:[EMAIL PROTECTED] recipients of list ORACLE-L Sent: Wednesday, October 23, 2002 6:43 AM IMHO, the main requirement is that you have to have a system that needs to be up 24x7 on a cluster and your ability to fork enough money to Oracle and your server vendor (to get two identical machines) and your networking vendor (for redundant network connections). Rest everything is easy ... Raj __ Rajendra Jamadagni MIS, ESPN Inc. Rajendra dot Jamadagni at ESPN dot com Any opinion expressed here is personal and doesn't reflect that of ESPN Inc. QOTD: Any clod can have facts, but having an opinion is an art! -Original Message- Sent: Wednesday, October 23, 2002 3:04 AM To: Multiple recipients of list ORACLE-LDear All, We are planning to implement ORAC for our application, can anybody tell me where to get good information on the system requirements for implementing the same. Regards Prem -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: DENNIS WILLIAMS INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services - To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containin
RE: Oracle Real Application Clusters
Hi, Could you please give me the links to these white papers...? DENNIS WILLIAMS [EMAIL PROTECTED] Sent by: [EMAIL PROTECTED] 10/23/02 09:53 PM Please respond to ORACLE-L To:Multiple recipients of list ORACLE-L [EMAIL PROTECTED] cc: Subject:RE: Oracle Real Application Clusters Tim - Gee, during the original presentation I attended, RAC was presented as a cost-saving feature. Something about being able to use a lot of cheap Linux servers. This stuck me as a little odd at the time. Just now, I looked at the white papers that Oracle posts on the subject, and I didn't see the cost-saving aspect mentioned. Or maybe Oracle is still getting the Linux ball rolling. Dennis Williams DBA, 40%OCP Lifetouch, Inc. [EMAIL PROTECTED] -Original Message- Sent: Wednesday, October 23, 2002 9:05 AM To: Multiple recipients of list ORACLE-L Aye to that, but you'll need at least two, possibly three, identical clusters, not just one. One cluster for production and an identical cluster for QA/Test, and possibly one for development (though that last is often regarded as unnecessary). Skimping on the QA/Test environment is the leading edge of failure... RAC itself requires additional DBA expertise as well as additional OS SysAdmin expertise for cluster hardware/OS, each of which costs more to obtain/maintain (either by hiring experienced/talented or training to build or both). Clustering is not a low-cost solution from any perspective... RAC is a solution for certain specific high-availability and high-scaleability requirements (not including data-center failure, a.k.a. disaster-recovery), so it's a good idea to be certain that you are planning a solution that meets your own specific requirements before proceeding. RAC should not be a high-level management decision -- it is a specific technical solution to meet specific technical requirements, which themselves should have been derived from the requirements of the business. There are several other possible H/A solutions in Oracle9i (i.e. physical standby, logical standby, advanced replication, OS failover solutions, RAC, etc), each of which addresses the same H/A problems in different ways with differing levels of complexity and cost. - Original Message - To: Multiple mailto:[EMAIL PROTECTED] recipients of list ORACLE-L Sent: Wednesday, October 23, 2002 6:43 AM IMHO, the main requirement is that you have to have a system that needs to be up 24x7 on a cluster and your ability to fork enough money to Oracle and your server vendor (to get two identical machines) and your networking vendor (for redundant network connections). Rest everything is easy ... Raj __ Rajendra Jamadagni MIS, ESPN Inc. Rajendra dot Jamadagni at ESPN dot com Any opinion expressed here is personal and doesn't reflect that of ESPN Inc. QOTD: Any clod can have facts, but having an opinion is an art! -Original Message- Sent: Wednesday, October 23, 2002 3:04 AM To: Multiple recipients of list ORACLE-L Dear All, We are planning to implement ORAC for our application, can anybody tell me where to get good information on the system requirements for implementing the same. Regards Prem -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: DENNIS WILLIAMS INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
