Basic cluster question related to switches.

Hi all,
Id like to speak with someone
where could be problem.
We have configured switches 2950 and 3560 to make cluster..command cluster member and cluster commander ...
Our 3560 is commander. Problem is that commander rewrote hostnames of members.
But we dont know why?
Pls, any suggestions!!
BR
jl

Hello,
the only way I know of this could happen is when the switch has previously been a member of a cluster...check the info below. Which IOS version are you running on the 3560 ? This could be a bug, I will check that, can yo post the output of ´show version´?
Hostnames
You do not need to assign a host name to either a cluster command switch or an eligible cluster member. However, a hostname assigned to the cluster command switch can help to identify the switch cluster. The default hostname for the switch is Switch.
If a switch joins a cluster and it does not have a hostname, the cluster command switch appends a unique member number to its own hostname and assigns it sequentially as each switch joins the cluster. The number means the order in which the switch was added to the cluster. For example, a cluster command switch named eng-cluster could name the fifth cluster member eng-cluster-5.
If a switch has a hostname, it retains that name when it joins a cluster and when it leaves the cluster.
If a switch received its hostname from the cluster command switch, was removed from a cluster, was then added to a new cluster, and kept the same member number (such as 5), the switch overwrites the old hostname (such as eng-cluster-5) with the hostname of the cluster command switch in the new cluster (such as mkg-cluster-5). If the switch member number changes in the new cluster (such as 3), the switch retains the previous name (eng-cluster-5).
Regards,
GP

Similar Messages

Extremely basic cluster questions

I posted this in the Qmaster section, but it's been 24 hours with no response, so I thought I'd try at this more heavily-trafficked board.
I have a Dual 2.5 G5 and a dual 1.25 G4. I moved all my Final Cut/Adobe licenses from the G4 to the G5 when I bought it.
1) Do I have to buy a fully working copy of Final Cut Studio (i.e. spend $1300) to create a cluster that will render Compressor and After Effects? (And now that I think about it, will I have to buy another seat of After Effects too?)
2) Do I need to pay to upgrade the OS on the G4 (currently 10.3.x)?
3) Will clustering a G4 to my G5 significantly impact my render times?
Thanks in advance.

Qmaster won't help you with After Effects renders. AFAIK. You need the AE engine, which ships free with AE, or GridIron's Nitro products.
Networked rendering has workflow issues that you must research carefully before you attempt to engage. For instance, AE's distributed rendering creates only image sequences, not QT movies. Converting them to a useful format can cancel any gains from the render.
The traffic on the Qmaster forum represents its utility. I don't know anyone who can make it work well enough to actually use it and, if there are successful users, they don't post. If I remember the past discussions, G4s are not recommended. You need at least 4 machines to gain any appreciable render improvements and you need to be doing a huge volume of work to justify the management overhead.
But just scrolling down the Qmaster list of posts turned up several threads that might help you out. Did you look?
bogiesan

JMS/Queue cluster question

 Hi
 I have some very basic cluster questions on JMS Queues. Lets say Q1>I have 3 WLS
 in cluster. I create the queue in only WLS#1 - then all the other WLS (#2 and #3)
 should have a stub in their JNDI tree for the Queue which points to the Queue in
 #1 - right? Basically what I am trying to acheive is to have the queue in one server
 and all the other servers have a pointer to it - I beleive this is possible in WLS
 cluster - right??
 Q2> Is there any way a client to the queue running on a WLS can tell whether the
 Queue handle its using is local (ie in the same server) or remote. Is the API createQueue(./queuename)
 going to help here??
 Q3>Is there any way to create a Queue dynamically - I guess JMX is the answer -right?
 But I will take this question a bit further - lets say Q1 answer is yes. In this
 case if server #1 crashes - then #2 and #3 have no Queues. So if they try to create
 a replica of the Queue (as on server#1) - pointing to the same filestore - can they
 do it?? - I want only one of them to succed in creating the Queue and also the Queue
 should have all the data of the #1 Queue (1 to 1 replica).
 All I want is the concept of primary and secondary queue in a cluster. Go on using
 the primary queue - but if it fails use the 2ndry queue. Kind of HttpSession replication
 concept in clusters. My cluster purpose is more for failover rather than loadbalancing.
 TIA
 Anamitra


 Anamitra wrote:
 > Hi Tom
 > 7.0 is definitely an option for me. So lets take the scenarion on case of JMS cluster
 > and 7.0.
 >
 > I do not understand what u mean by HA framework?
 An HA framework is a third party product that can be used to automatically restart a failed server
 (perhaps on a new machine), and that will guarantee that the same server isn't started in two
 different places (that would be bad). There are few of these HA products, "Veritas" is one of
 them. Note that if you are using JMS file stores or transactions, both of which depend on the disk,
 you must make sure that the files are available on the new machine. One approach to this is to use
 what is known as a "dual-ported" disk.
 > If I am using a cluster of 3 WLS
 > 7.0 servers - as u have said I can create a distrubuted Queue with a fwd delay attribute
 > set to 0 if I have the consumer only in one server say server #1.
 > But still if the server #1 goes down u say that the Queues in server #2 and server
 > #3 will not have access to the messages which were stuck in the server #1 Queue when
 > it went down -right?
 Right, but is there a point in forwarding the messages to your consumer's destination if your
 application is down?
 If your application can tolerate it, you may wish to consider allowing multiple instances of it (one
 per physical destination). That way if something goes down, only those messages are out-of-business
 until the application comes back up...
 >
 >
 > Why cant the other servers see them - they all point to the same store right??
 > thanks
 > Anamitra
 >
 Again, multiple JMS servers can not share a store. Nor can multiple stores share a file. That will
 cause corruption. Multiple stores CAN share a database, but can't use the same tables in the
 database.
 Tom
 >
 > Tom Barnes <[email protected]> wrote:
 > >
 > >
 > >Anamitra wrote:
 > >
 > >> Hi
 > >> I have some very basic cluster questions on JMS Queues. Lets say Q1>I
 > >have 3 WLS
 > >> in cluster. I create the queue in only WLS#1 - then all the other WLS
 > >(#2 and #3)
 > >> should have a stub in their JNDI tree for the Queue which points to the
 > >Queue in
 > >> #1 - right?
 > >
 > >Its not a stub. But essentially right.
 > >
 > >> Basically what I am trying to acheive is to have the queue in one server
 > >> and all the other servers have a pointer to it - I beleive this is possible
 > >in WLS
 > >> cluster - right??
 > >
 > >Certainly.
 > >
 > >>
 > >> Q2> Is there any way a client to the queue running on a WLS can tell whether
 > >the
 > >> Queue handle its using is local (ie in the same server) or remote. Is
 > >the API createQueue(./queuename)
 > >> going to help here??
 > >
 > >That would do it. This returns the queue on the CF side of the established
 > >Connection.
 > >
 > >>
 > >> Q3>Is there any way to create a Queue dynamically - I guess JMX is the
 > >answer -right?
 > >> But I will take this question a bit further - lets say Q1 answer is yes.
 > >In this
 > >> case if server #1 crashes - then #2 and #3 have no Queues. So if they
 > >try to create
 > >> a replica of the Queue (as on server#1) - pointing to the same filestore
 > >- can they
 > >> do it??
 > >> - I want only one of them to succed in creating the Queue and also the
 > >Queue
 > >> should have all the data of the #1 Queue (1 to 1 replica).
 > >
 > >No. Not possible. Corruption city.
 > >Only one server may safely access a store at a time.
 > >If you have an HA framework that can ensure this atomicity fine, or are
 > >willing
 > >to ensure this manually then fine.
 > >
 > >>
 > >>
 > >> All I want is the concept of primary and secondary queue in a cluster.
 > >Go on using
 > >> the primary queue - but if it fails use the 2ndry queue. Kind of HttpSession
 > >replication
 > >> concept in clusters. My cluster purpose is more for failover rather than
 > >loadbalancing.
 > >
 > >If you use 7.0 you could use a distributed destination, with a high weight
 > >on the destination
 > >you want used most. Optionally, 7.0 will automatically forward messages
 > >from distr. dest
 > >members that have no consumers to those that do.
 > >
 > >In 6.1 you can emulate a distributed destination this way (from an upcoming
 > >white-paper):
 > >Approximating Distributed Queues in 6.1
 > >
 > >If you wish to distribute the destination across several servers in a cluster,
 > >use the distributed
 > >destination features built into WL 7.0. If 7.0 is not an option, you can
 > >still approximate a simple
 > >distributed destination when running JMS servers in a “single-tier”
 > configuration.
 > > Single-tier indicates
 > >that there is a local JMS server on each server that a connection factory
 > >is targeted at. Here is a
 > >typical scenario, where producers randomly pick which server and consequently
 > >which part of the
 > >distributed destination to produce to, while consumers in the form of MDBs
 > >are pinned to a particular
 > >destination and are replicated homogenously to all destinations:
 > >
 > >· Create JMS servers on multiple servers in the cluster. The servers will
 > >collectively host the
 > >distributed queue “A”. Remember, the JMS servers (and WL servers) must
 > >be named differently.
 > >
 > >· Configure a queue on each JMS server. These become the physical destinations
 > >that collectively become
 > >the distributed destination. Each destination should have the same name
 > >"A".
 > >
 > >· Configure each queue to have the same JNDI name “JNDI_A”, and also
 > take
 > >care to set the destination’s
 > >“JNDINameReplicated” parameter to false. The “JNDINameReplicated”
 > parameter
 > >is available in 7.0, 6.1SP3
 > >or later, or 6.1SP2 with patch CR061106.
 > >
 > >· Create a connection factory, and target it at all servers that have a
 > >JMS server with “A”.
 > >
 > >· Target the same MDB pool at each server that has a JMS server with destination
 > >“A”, configure its
 > >destination to be “JNDI_A”. Do not specify a connection factory URL
 > when
 > >configuring the MDB, as it can
 > >use the server’s default JNDI context that already contains the destination.
 > >
 > >· Producers look up the connection factory, create a connection, then a
 > >session as usual. Then producers
 > >look up the destination by calling javax.jms.QueueSession.createQueue(String).
 > > The parameter to
 > >createQueue requires a special syntax, the syntax is “./<queue name>”,
 > so
 > >“./A” works in this example.
 > >This will return a physical destination of the distributed destination that
 > >is local to the producer’s
 > >connection. This syntax is available on 7.0, 6.1SP3 or later, and 6.1SP2
 > >with patch CR072612.
 > >
 > >This design pattern allows for high availability, as if one server goes
 > >down, the distributed destination
 > >is still available and only the messages on that one server become unavailable.
 > > It also allows for high
 > >scalability as speedup is directly proportional to the number of servers
 > >on which the distributed
 > >destination is deployed.
 > >
 > >
 > >
 > >>
 > >> TIA
 > >> Anamitra
 > >
 > >
 > ><!doctype html public "-//w3c//dtd html 4.0 transitional//en">
 > ><html>
 > >Anamitra wrote:
 > ><blockquote TYPE=CITE>Hi
 > > I have some very basic cluster questions on JMS Queues. Lets say Q1>I
 > >have 3 WLS
 > > in cluster. I create the queue in only WLS#1 - then all the other WLS
 > >(#2 and #3)
 > > should have a stub in their JNDI tree for the Queue which points to
 > >the Queue in
 > > #1 - right?</blockquote>
 > >Its not a stub. But essentially right.
 > ><blockquote TYPE=CITE>Basically what I am trying to acheive is to have
 > >the queue in one server
 > > and all the other servers have a pointer to it - I beleive this is
 > >possible in WLS
 > > cluster - right??</blockquote>
 > >Certainly.
 > ><blockquote TYPE=CITE>
 > > Q2> Is there any way a client to the queue running on a WLS can tell
 > >whether the
 > > Queue handle its using is local (ie in the same server) or remote.
 > >Is the API createQueue(./queuename)
 > > going to help here??</blockquote>
 > >That would do it. This returns the queue on the
 > >CF side of the established Connection.
 > ><blockquote TYPE=CITE>
 > > Q3>Is there any way to create a Queue dynamically - I guess JMX is
 > >the answer -right?
 > > But I will take this question a bit further - lets say Q1 answer is
 > >yes. In this
 > > case if server #1 crashes - then #2 and #3 have no Queues. So if they
 > >try to create
 > > a replica of the Queue (as on server#1) - pointing to the same filestore
 > >- can they
 > > do it?? 
 > >- I want only one of them to succed in creating the Queue and also the
 > >Queue
 > > should have all the data of the #1 Queue (1 to 1 replica).</blockquote>
 > >No. Not possible. Corruption city.
 > > Only one server may safely access a store at a time.
 > > If you have an HA framework that can ensure this atomicity fine, or
 > >are willing
 > > to ensure this manually then fine.
 > ><blockquote TYPE=CITE>
 > >All I want is the concept of primary and secondary queue in a cluster.
 > >Go on using
 > > the primary queue - but if it fails use the 2ndry queue. Kind of HttpSession
 > >replication
 > > concept in clusters. My cluster purpose is more for failover rather
 > >than loadbalancing.</blockquote>
 > >If you use 7.0 you could use a distributed destination, with a high weight
 > >on the destination
 > > you want used most. Optionally, 7.0 will automatically
 > >forward messages from distr. dest
 > > members that have no consumers to those that do.
 > >In 6.1 you can emulate a distributed destination this way (from an
 > >upcoming white-paper):
 > > Approximating Distributed Queues in 6.1
 > >If you wish to distribute the destination across several servers
 > >in a cluster, use the distributed destination features built into WL 7.0.
 > >If 7.0 is not an option, you can still approximate a simple distributed
 > >destination when running JMS servers in a “single-tier” configuration.
 > >Single-tier indicates that there is a local JMS server on each server that
 > >a connection factory is targeted at. Here is a typical scenario,
 > >where producers randomly pick which server and consequently which part
 > >of the distributed destination to produce to, while consumers in the form
 > >of MDBs are pinned to a particular destination and are replicated homogenously
 > >to all destinations:
 > >· Create JMS servers on multiple servers in the cluster.
 > >The servers will collectively host the distributed queue “A”. Remember,
 > >the JMS servers (and WL servers) must be named differently.
 > >· Configure a queue on each JMS server. These become
 > >the physical destinations that collectively become the distributed destination.
 > >Each destination should have the same name "A".
 > >· Configure each queue to have the same JNDI name “JNDI_A”,
 > >and also take care to set the destination’s “JNDINameReplicated”
 > parameter
 > >to false. The “JNDINameReplicated” parameter is available in
 > >7.0, 6.1SP3 or later, or 6.1SP2 with patch CR061106.
 > >· Create a connection factory, and target it at all servers
 > >that have a JMS server with “A”.
 > >· Target the same MDB pool at each server that has a JMS server
 > >with destination “A”, configure its destination to be “JNDI_A”.
 > >Do not specify a connection factory URL when configuring the MDB, as it
 > >can use the server’s default JNDI context that already contains the destination.
 > >· Producers look up the connection factory, create a connection,
 > >then a session as usual. Then producers look up the destination by
 > >calling javax.jms.QueueSession.createQueue(String). The parameter
 > >to createQueue requires a special syntax, the syntax is “./<queue name>”,
 > >so “./A” works in this example. This will return a physical
 > >destination of the distributed destination that is local to the producer’s
 > >connection. This syntax is available on 7.0, 6.1SP3 or later,
 > >and 6.1SP2 with patch CR072612.
 > >This design pattern allows for high availability, as if one server
 > >goes down, the distributed destination is still available and only the
 > >messages on that one server become unavailable. It also allows
 > >for high scalability as speedup is directly proportional to the number
 > >of servers on which the distributed destination is deployed.
 > > 
 > > 
 > ><blockquote TYPE=CITE>
 > > TIA
 > > Anamitra</blockquote>
 > ></html>
 > >
 > >

Basic Questions related EHPs for SEM

Hi Guys,
I've some basic questions related to EHPs: -
1. If we don't mean to implement any of the new functionalities does it make any sense to implement EHP? In other words do EHPs also have some general improments other than the functionalities which can be specifically activated?
2. If we just activate a functionality and don't implement/ use it can there be any negative impact?
3. In case of a pure technical upgrade from SEM 4.0 to SEM 6.0 which EHP would be recommended?
4. Is there a quick way to find all relevant notes in EHPn which are related to corrections for EHPn-1?
Thanks in advance,
-SSC

HI,
If you see some of my older posts I have had many issues with certain features of the EHP2 functionality but that doesn't mean I would recommned against it.
BCS 6 EHPs 3 & 4 (BCS 6.03 / 6.04) - enhancement packs worth implementing?
BCS 6 EHP 2 (BCS 6.02) - activation of enhancement pack
My recommendation is to implement the EHPs but not necesarrily activate the functions (in SFW5) unless you need them - this means that you will only have to test once after EHP implementation and will have the ability to activate the other features as and when required (although testing is required after activation of course) whereas it might be difficult to persuade your client/basis team to implement EHP4 later if you don't do it now.
In the features of EHP2 (activate FIN_ACC_GROUP_CLOSE) it states that there is a general performance improvement - although I have yet to experience it! From OSS note 1171344 "The functionality which is available in EHP2 consists of...
... Performance improvements of status management, reporting and initial start-up of consolidation workbench and monitor.
Since activating FIN_ACC_GROUP_CLOSE I have had many OSS notes requiring application but i discovered that when the technical team implemented the EHPs (before i joined this client) they somehow forgot the latest SP (support packs) and didn't upgrade to the current level - so make sure that you get the right SPs too (see the links in Greg's link above) to avoid the many OSS notes.
As for your question - "is there a list of OSS notes to specific to EHP upgrades? - the answer is most definietly "NO" - I already asked OSS in desperation!
however, you can see the OSS notes that i have applied listed in the above link ( BCS 6 EHP 2 (BCS 6.02) - activation of enhancement pack )

Question related to Java Concurrent Program

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Windows 2008 Cluster question on using a new cluster drive source from shrinking existing disk

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Will this work without crashing the cluster.
Thanks,
Gonzolean

Hi ,
Thank you for posting your issue in the forum.
I am trying to involve someone familiar with this topic to further look at this issue. There might be some time delay. Appreciate your patience.
Thank you for your understanding and support.
Best Regards,
Andy Qi
Andy Qi
TechNet Community Support

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Hi Thanks for the Information.
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import java.io.BufferedReader;
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Can you let me know what is missing here or what i'm doing wrong.
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~Alapati

Question related to Collections

1. I have a set of type HashSet which contains words and I have created a GUI with a JTextField that allows the user to check if his "word/letter" is in the HastSet defined. If the user's word is there, I will display a message ( "The HashSet contains the word" + user_word ). But on the other hand, if the user's word is not there, I have to display a message ("The HashSet does not contain the word" + user_word). The following code works fine when the user's word is in the set but when the word is not in the set, my program just crashes with a bunch of errors.
public void wordCheck(String user_word)
 i = myHashSet.iterator(); // i is an Iterator<String>
 if (i.hasNext()) {
 while(searchBoolean != true){
 if ( (user_word.equalsIgnoreCase(i.next())) == true){
 searchBoolean = true; // If found, the boolean value will be set to true
 answer= "The HasHSet contains the word " + user_word; // answer is a String variable
 else {
 searchBoolean=false;
 } // end of while
 } // end of first if
 else {
 if (searchBoolean == false)
 answer="The HashSet does not contain the word " + user_word;
 }All my variables have been declared at the beginning of my program, so I don't think that my program crashes because of some undeclared variables.
This is the error:
Exception in thread "AWT-EventQueue-0" java.util.NoSuchElementException
 at java.util.TreeMap$PrivateEntryIterator.nextEntry(Unknown Source)
 at java.util.TreeMap$KeyIterator.next(Unknown Source)
and it says that there is an error at the following line of code:
if ( (user_word.equalsIgnoreCase(i.next())) == true){So basically, my question is what can I do in order to not get all these errors and simply display on the GUI that the set does not have this x element.
2. Is there a magic function in Java that can actually interpret XYZ as the same as zxy. For example, if my set has the word XYZ and if the user types zxy, I want to display the message " The HashSet does contain the word zyx". Or else, do I have to use a for loop and check if there is each letter of the user_word in an element found of my Set.
I sincerely thanks everyone who at least take time to read my problem and please don't feel that I am asking you to do my work. All I want is some hints of what I did wrong so that I can correct it or maybe it could be something really easy that I just couldn't see for hours and hours...
Thank you!

ti_ma wrote:
Believe me on that, I have tried using a while loop over there and my program does not only crashes but freezes my whole computer...With the "if", my method works really fine when the value is found in the set but when a value is not found in the set, it just crashes and that's what I want to avoid!You can't just stop using the correct method because you get an error or crash...find the error and fix it! It doesn't make sense to switch to a method that will never work, just because it compiles, does it?
Your current method only checks if there's a next item once, so when you get to your While loop, there's nothing checking to see if there's a next item before it attempts to read one...hence the error you're having. You need to have a While(hasnext()) loop, and inside that, check if next() is the item.

Design question related to database replication ...

Hi everybody,
I had a design and architecture question. Do you folks mind giving me some directions on it please ?
We have a huge J2EE application coming in related Airlines business. It will run on BEA 8.1 SP5 clusters, Iplanet web front ends, Mainframe database and Oracle database, MQ is also involved. Also uses JCA/Legacy vendor solutions from Neon and IWay (I have no clue what they are but will learn soon).
Now, i was involved in discussions where the Oracle database needs to be "replicated" onto another Oracle database box in case if the "live and connected" Oracle database goes down. Basically it is related to HA.
So, do you folks have any best practices guidlines which we can reference to better design this application ?
any help is greatly appreciated.

You should be able to link your objects using methods in your entities to create an object graph.
When you save your user the associated objects will also be persisted based on the cascade types that you have specified on the relationships between the entities.

Can someone plz confirm me that how i can change or update the security questions related to my apple id? as i have been never put them since i create my apple id but now due to some security reasons its asking me again and again the answers. i am unable

can someone plz confirm me that how i can change or update the security questions related to my apple id? as i have been never put them since i create my apple id but now due to some security reasons its asking me again and again the answers. i am unable to go through the process. thanks.

Some Solutions for Resetting Forgotten Security Questions: Apple Support Communities

Interview Questions related to Warehouse management

Hi all
Can u please help me regarding Interview Questions related to Warehouse management
Thanks and Regds
Daniel

Have you searched in very first thread
[Warehouse Management?|New to Materials Management / Warehouse Management?;

Basic iPhoto questions:

I have some Basic iPhoto questions before I start using the program:
- does iPhoto apply any compression or change images in any way when they
are imported?
- after images are imported, can the original source folder of images be deleted off of the mac?
- can Quicktime files exported from iPhoto be viewed on a Windows computer?
- can iPhoto handle large resolution images that might be as large as 8-15mb each? does it display them quick? are there any known file size issues?
Thanks!!!!

kat.
Is there a way to use iPhoto on a network so other users can read and possibly write to an iPhoto library on a networked mac?
iPhoto is a consumer level photo organiser, not a server. It's possible to share photos but libraries are very difficult and fraught with the danger of database corruption. Some have reported success.
Is it possible to password protect or secure certain images in the library so they can not be seen by anyone?
No. The best I can suggest there is to create a second library and store it in a secure area like a protected dmg. But remember, you can only have one library open at a time.
After photos are deleted from iPhoto, are there any remaining traces or cached files anywhere other than the trash
If you delete photos from iPhoto and empty the iPhoto trash then the pics are removed from the Finder as well. They remain as findable as any other deleted file from that point, which is, very, if the searcher in knowledgeable.
Regards
TD

Object class deployment - Basic form question

OK, I subclass calendar object from Oracle provided standard
object class. What do I need to deploy to use this form now
apart from calendar.pll and my fmx. What about the object class
from which I sub-class. Do I need to compile and deploy that
also? How will form resolve this on run time the parent object
class as I really did not copy, just sub class and we do not
deploy original class? Basic form question. Thanks.

You can set the "help" property on the field (which gives you the little "information" icon link beside the field).
You could also try adding another field of another class above or below:
<Display class='InlineAlert'/>
<Display class='ErrorMessage'/>
<Display class='HtmlPage'/>
..etc
-Rob

Questions relating to Groupware Integration (Outlook)

Hello,
I have few questions relating to groupware integration for Outlook:
Q1) The "Relate to CRM" option in outlook add-in for end user is available only in client side integration? Is it not available for server sider integration (i.e. in server side, end user cannot directly assign CRM account or Transaction to object in outlook the way it is done in client side)?
Q2) Is there any end user interface (like add-on) available in server side?
Q3)In client side - Can the outlook add-on for SAPCRM be enhanced for different business logic or look n feel?
Thanks,
Vicky

Hello Vicky,
1) Yes the Relate to SAP CRM function is part of Client-side groupware only.
2) The Add-in is only available with Client-side groupware.
3) The Add-in cannot be customized. However the results can be influenced by parameters in transaction GWIPROFILE.
The information displayed in the Business information Pane can be changed.
Best Regards,
Gervase Auden

Some questions related to SAP XI

Hello!
I would like to know the answers for the following questions regarding SAP XI-context (if it possible with Yes/No and a short comment/explanation)
CAPACITY PLANNING GUIDELINES
a) Guidelines to size the server(s)?
b) Guidelines for sizing the over all environment for High-Availability
ARCHIVING CAPABILITIES
a) Approach to archiving of obsolete data
PLATFORM SUPPORT
a) Software supported on HP-UX 11.i V2 (r6) on Itanium.
b) software supported on Windows 2003 sp1 (x64) on AMD Opteron
c) software support aligned with release roadmaps for future versions of HP-UX and/or Windows Server
d) Software supported on OS clustered servers (If mutliple products, please indicate if all are support or list areas where clustering may not be recommended and why)
RELATIONAL DATABASE 
a) Does your system run native to the Oracle 10g RDBMS (RAC) and database tools? If not, please explain the databases and tools supported.
b) database monitoring tools be used to manage impending maintenance needs and potential problems and performance impacts (i.e., tool will monitor and detect prior to real problem occurring)
c) standard pre-defined SQL queries and related calculations provided for use with industry standard reporting tools
d) database accept binary-large-objects (BLOBs) and be referenced via the relational engine.
Thank you in advance!
Regards!
A.Henke

two questions related to this:
1. Why Java is designed to only permit single
inheritence, any stories behind the scene? I think
some major reasons why "prefer interfaces toabstract
classes" is accepted is rooted in this limitation.Yes, one of the reasons interfaces are better is that
you can only extend one class, but implement many
interfaces. Say you have a concrete class that should
"implement" two different types. If those types were
defined as abstract classes, you could only use one
type. You could implement both types if they were
interfaces though. So why java is designed to have this limitation? There may be some arguments before this is settled down. I always like to hear this kind of stories:)
2. Base on the fact that once an interface is outof
box and widely implemented, it is almostimpossible
to change it. So how you guys design yourinterfaces?
Could you share some? In my idea, I would designmy
interfaces as compact as possible.You could extend the interface and start using that
if you didn't want to break existing code. You
couldn't use that implementation as an Interface1
though, since the new methods only exist in
Interface2, so that's not an optimal solution.So we may always need to add a new interface when we just want to add a new method.

Basic cluster question related to switches.

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