Question on clustering and J2EE Environment Entries

Does anyone know if changes made through the admin server console to J2EE
          environment entries are propagated to the managed servers without
          redeploying the entire app. I can find a reference similar to this for
          things in the config.xml which states they are propagated in memory (in most
          cases) and can optionally be written permanently to the confg.xml file. I
          can't find a reference that tells me how/what is done for J2EE environment
          values.
          If this is not possible, how does one do dynamic configuration setting for a
          J2EE application in a clustered environment?
          Kent

What I'm talking about is the environment entries that are set in the web
 application deployment descriptor (web.xml) from the admin server console.
 You go to a specific web-app in the console and then click on "edit web
 application deployment descriptor". From there (towards the bottom of the
 tree on the left) is Env Entry. You can change Environment Entries in the
 DD. What is unclear is if the values are propagated to the running app
 (in memory). For example, if I have a servlet that reads this environment
 entry and I change it in the admin console is the new value reflected
 (relatively) immediately? It's not entirely clear.
 Since there is an option to "persist" these changes (in the top of the tree)
 that would seem to imply that the changes are propagated to the running
 instances in memory otherwise why would I not want to persist the change?
 On the other hand, I would have also expected a button to let me decide when
 to push the changes so I could control when the managed server know about
 the change (for example, if I had to set more than one property to configure
 something).
 So ... does this make my question clearer? And if so is there any
 documentation the describes this? If not how do people handle configuration
 of a running application in a cluster if it not through DD environment
 entries?
 Kent
 "Cameron Purdy" <[email protected]> wrote in message
 news:[email protected]...
 > > Actually I'm talking about what I would call "environment variables" if
 > this
 > > was unix. I am not talking about files (gifs, html, etc) but rather
 > porpety
 > > settings. It is my understanding that these are call "environment
 > entries"
 > > (but I may remembered the name wrong) and are typed values that can be
 > > looked up vi JNDI.
 >
 > You can programmatically set JNDI entries, and they will usually be
 > propagated (although they are not designed to be reliably replicated).
 > Furthermore, the death of the registering server will cause the death of
 the
 > JNDI entries.
 >
 > I don't know how to set them from the console.
 >
 > Peace,
 >
 > --
 > Cameron Purdy
 > Tangosol, Inc.
 > Clustering Weblogic? You're either using Coherence, or you should be!
 > Download a Tangosol Coherence eval today at http://www.tangosol.com/
 >
 >
 >
 > "Kent Mitchell" <[email protected]> wrote in message
 > news:[email protected]...
 > >
 >
 >
 >

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The JWSDP tutorial says to be in the �build� folder of the example when issuing the jar command to create the .war file. The build folder is created when I run the �ant build� command.
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adding: index.jsp(in = 921) (out= 525)(deflated 42%)
adding: WEB-INF/(in = 0) (out= 0)(stored 0%)
adding: WEB-INF/classes/(in = 0) (out= 0)(stored 0%)
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java.io.FileNotFoundException: converter.war (The system cannot find the file specified)
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at java.io.FileInputStream.<init>(FileInputStream.java:103)
at java.io.FileInputStream.<init>(FileInputStream.java:66)
at sun.tools.jar.Main.run(Main.java:185)
at sun.tools.jar.Main.main(Main.java:904)
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Admin UI for editing environment entries (i.e. env-entry in web.xml)

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Not much traffic in this newsgroup, is there?
Steve
"Steve Ditlinger" <[email protected]> wrote:
>
>
>
If I create an "env-entry" block for a name (e.g. "MySchemaName") in
my web.xml
file and deploy the web app, I should be able to look up the name from
my webapp
with the line:
 
myInitialContext.lookup("java:comp/env/MySchemaName");
 
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javax.naming.NameNotFoundException: Unable to resolve 'java:comp.env/MySchemaName'
 
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Questions on clustering

Hi,
 I am on weblogic 7.0 sp2, jdk1.3.1 and solaris 8. I have a couple of
 questions regarding clustering in production.
 1. Is it a good thing to run the admin server on a small linux box and
 weblogic
 clustered servers on big solaris boxes?
 2. Is it good to have the clustered URL as
 t3://server-1:port-1,server-2:port-2....server-n:port-n or to have it as
 t3://cluster:port
 and all the entries in the DNS server?


That's because DNS round robin should allow better failover for
 initialcontext calls via container / clients in certain scenarios. I am not
 too familiar with it but will try to find out some additional detail for
 you.
 sree
 "Shiva P" <[email protected]> wrote in message
 news:[email protected]...
 > Thanks. For the 2nd question can you also tell me the reasons? I am just
 curious
 > out
 > here and nothing more than that.
 >
 > Shiva.
 >
 > Sree Bodapati wrote:
 >
 > > Hi Shiva,
 > >
 > > Please see my answers inline,
 > >
 > > "Shiva P" <[email protected]> wrote in message
 > > news:[email protected]...
 > > > Hi,
 > > > I am on weblogic 7.0 sp2, jdk1.3.1 and solaris 8. I have a couple of
 > > > questions regarding clustering in production.
 > > >
 > > > 1. Is it a good thing to run the admin server on a small linux box and
 > > > weblogic
 > > > clustered servers on big solaris boxes?
 > >
 > > It should be fine. I dont think that would be anything different except
 that
 > > you need to make sure to test it out and ensure the linux kernel
 properties
 > > are properly tuned (not sure which will be applicable to your env)
 > > especially when doing deployment of application. Check it out and post a
 > > note here if you find something different that you need help with.
 > >
 > > > 2. Is it good to have the clustered URL as
 > > > t3://server-1:port-1,server-2:port-2....server-n:port-n or to have it
 as
 > > > t3://cluster:port
 > > > and all the entries in the DNS server?
 > > >
 > >
 > > t3://cluster:port is prefered in production environments (the url should
 be
 > > the DNS entry pointing to all ips of the machines in the cluster).
 > >
 > > /
 > > sree
 >

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I just need to get an official answer;
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<a href="https://websmp130.sap-ag.de/sap(bD1lbiZjPTAwMQ==)/bc/bsp/spn/smp_custmsg/main.do?event=LOAD&smpsrv=h">CSN 0120025231 0001708443 2005</a>

hi
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to save you the time, it says that You must add the declaration within the sda-dd.xml
<substitution-variable>
<variable-name>com.vendor.yourVarName</variable-name>
</substitution-variable>
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full log message of deployment error
02/01/2006 13:58:13 /userOut/deploy (com.sap.ide.eclipse.sdm.threading.DeployThreadManager) [Thread[Deploy Thread,5,main]] ERROR:
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Settings
SDM host : zaksrv2
SDM port : 50018
URL to deploy : file:/C:/DOCUME1/zak/LOCALS1/Temp/temp19284checkpoint.comtimeofftest5substear.ear
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          Hi,
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JMS distributed destinations are optimized
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          Read the JMS Performance Guide white-paper
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          Ravi Krishnamurthy wrote:
          > Hello:
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          >
          > regards,
          > ravi
          >

Difference between Java EE 5 Platform and J2EE 1.4 Platform

What are differences between Java EE 5 Platform and J2EE 1.4 Platform. How we can choose one for a specific environment.
regards

dont be phsyco. MAy be i m good in other topic than
u. Its time restriction i am facing. OK leave it,
dont reply any help. its ok.
ake careEvery culture has rules under which it operates. This one is no exception. It is the unspoken policy of the forum regulars to heap scorn on people who demonstrate an unwillingness to do things for themselves, or to at least put forth an effort. Therefore you have been the target of a certain amount of vitribution. Perhaps you are the lazy worthless git your posting implies perhaps not. None of my business and I don't really care.
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And you still can't see why you would become the target of a certain amount of ire on the part of the forum regulars. Might want to give that one some thought.
But now to your question, well sort of, I can give you a synopsis of what's changed between 1.4. and EE 5, but if I do that what you will know is that one person told you something. If you use the resources that you've already been given and arrive at your own conclusions and questions you will both know what you found and have a frame of reference with which to address specific questions relating to specific change topics. If you do that, most of us here will be more than happy to discuss adnauseum the ramifications of any and all of the changes.
These are the kinds of topics that we will happily get wrapped up in, but after we've spent our effort and time learning the differences and how they relate to what we're doing why should we concern ourselves with someone who wants a spoon fed answer? Consider this, if you never move beyond bottle fed pablum (formula) you wouldn't be able to tolerate more robust food like say a steak. If you never learn to derive your own answers to questions like this, you will never move forward as a developer.
Now that I've ranted for a while. Read the material you've already been pointed to, come back with comments and questions of your own and we'll be happy to help and comment.
Cheers,
PS.

Several questions on Clustering

Hi,
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          Ashok


          Ashok Nare wrote:
          > Hi,
          >
          > I have some very basic questions on clustering within WebLogic :
          >
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          > our environment. But, we want to make sure that these services can use
          > WebLogic's load-balancing and failover mechanisms. Are startup classes
          > clusterable ?
          Only RMI classes can use load-balancing and failover mechanisms.
          > If I register a startup class in the cluster-wide properties file, does every
          > WebLogic server running within the cluster get an instance of the startup
          > class ?
          It depends on what kind of class it is, and how your environment is setup.
          > 2. Are stateless RMI objects clusterable ?
          Yes
          > Thanks.
          > Ashok

Having a problem with dates when I send my numbers doc to excel. dates are all out and that they have to cut and paste individual entries onto their spreadsheet. Any idea how I can prevent this

having a problem with dates when I send my numbers doc to excel. dates are all out and that they have to cut and paste individual entries onto their spreadsheet. Any idea how I can prevent this.
I'm using Lion on an MBP and Numbers is the latest version

May you give more details about what is wrong with your dates ?
M…oSoft products aren't allowed on my machines but I use LibreOffice which is a clone of Office.
When I export from Numbers to Excel and open the result with LibreOffice, the dates are correctly treated.
To be precise, dates after 01/01/1904 are correctly treated. dates before 01/01/1904 are exported as strings but, as it's flagged during the export process, it's not surprising.
Yvan KOENIG (VALLAURIS, France) mardi 3 janvier 2012
iMac 21”5, i7, 2.8 GHz, 12 Gbytes, 1 Tbytes, mac OS X 10.6.8 and 10.7.2
My iDisk is : http://public.me.com/koenigyvan
Please : Search for questions similar to your own before submitting them to the community
For iWork's applications dedicated to iOS, go to :
https://discussions.apple.com/community/app_store/iwork_for_ios

Performance issue with select query and for all entries.

hi,
i have a report to be performance tuned.
the database table has around 20 million entries and 25 fields.
so, the report fetches the distinct values of two fields using one select query.
so, the first select query fetches around 150 entries from the table for 2 fields.
then it applies some logic and eliminates some entries and makes entries around 80-90...
and then it again applies the select query on the same table using for all entries applied on the internal table with 80-90 entries...
in short,
it accesses the same database table twice.
so, i tried to get the database table in internal table and apply the logic on internal table and delete the unwanted entries.. but it gave me memory dump, and it wont take that huge amount of data into abap memory...
is around 80-90 entries too much for using "for all entries"?
the logic that is applied to eliminate the entries from internal table is too long, and hence cannot be converted into where clause to convert it into single select..
i really cant find the way out...
please help.

chinmay kulkarni wrote:Chinmay,
Even though you tried to ask the question with detailed explanation, unfortunately it is still not clear.
It is perfectly fine to access the same database twice. If that is working for you, I don't think there is any need to change the logic. As Rob mentioned, 80 or 8000 records is not a problem in "for all entries" clause.
>
> so, i tried to get the database table in internal table and apply the logic on internal table and delete the unwanted entries.. but it gave me memory dump, and it wont take that huge amount of data into abap memory...
>
It is not clear what you tried to do here. Did you try to bring all 20 million records into an internal table? That will certainly cause the program to short dump with memory shortage.
> the logic that is applied to eliminate the entries from internal table is too long, and hence cannot be converted into where clause to convert it into single select..
>
That is fine. Actually, it is better (performance wise) to do much of the work in ABAP than writing a complex WHERE clause that might bog down the database.

Some questions on versioning and synchronizing metadata

Hy all!
I am quite new to warehousing and Oracle Warehouse Builder, and so i would have some questions regarding on some common issues. I would appriciate if you guys would who have experience in this domain to share some good practice knowledge :)
I am using OWB 10.2
So first of all i would like to know if you have some proposal of the way of versioning control and synchronizing projects between team memebers when working on a bigger project, team memebers that don't work on the same repository (cause i saw that OWB has an integrated multiuser support for handeling object locks and user sessions).
I saw that a way of migrating data from one place to a nother is using the import/export options integrated in OWB. This creates mdl files wich are some kind of "dumps" of the metadata informations, but the thing with these mdl files wich i don't think is a good way to synchronize is that first of all the .mdx and .xml files contained in the .mdl (wich is kind of a zip) contains many informations in it (like creation date, some timestamps, etc) wich are always updated when exporting, and if synchronizing these files maybee using CVS, we always will get differences between the files alltough they would contain the same thing, only timestamps changed.
Then a nother issue with this, is that we could have 2 alternatives: dump the whole project, wich is odd to have to synchronize a single file between users, especialy on a big project, then the orher way would be doing for each object from the project (each mapping, each table, etc) an separate .mdl filem then to synchronize each file of each object, wich will be unefficient on reimporting each file in part.
So please if you can share the way you work on a big project with many implementers with OWB, i would really appriciate.
A nother thing i would like to know is: is there a way to generate from an existing project (like one created with OWB) the OMB commands dump (maybee in a tcl script)? Cause i saw that the way the exeprienced users implement warehousing is using TCL with OMB language. I downloaded the example from oracle for warehouse project, and i saw that is entirely made from tcl scripts (so no mdl file involved). And this i think would be nice, to have the OMB commands generated from an existing projects.
I see this OWB projects like a database wich can be built up from only OMB commands and OWB a graphical tool to do this (same as constructing a database only from DDL commands or using SQL developer to do this), this is why i am asking about a way of dumping the OMB commands for creating an OWB project.
Please give me some advices, and correct me if i sad some dumb things :D but i really am new to warehousing and i would really appriciate if you guys with experience could share some informations.
Thank you verry much!
Alex21

Depends. Having everyone working on the same project certainly simplifies things a lot regarding merging and is generally my preference. But I also recognize that some projects are complex enough that people wind up stepping on each other's toes if this is the case. In those cases, though, I try to minimize the issue of merging changes by having common structural objects (code libraries, tables, views, etc) retained in a single, strictly controlled, central project schema and having the developer's personal work areas reference them by synonym, thus being unable to alter them to the detriment of others.
If they want to change a common object then need to drop their synonym and make a local copy which they can alter, and then there is a managed process by which these get merged back into the main project schema.
This way any changes MUST go through a central schema, we can put processes in place to notify all of the team of any impending changes, and can also script updates across the team.
Every hour a script runs automatically that checks for dropped synonyms and notifies the project leader. It especially checks for two developers who have built local copies of the same object and notifies each that they need to coordinate with each other as they are risking a conflict. When a structural change is submitted back to the central shared schema, it is added to a batch that is installed at end of business and a list of those impending changes is circulated to the team along with impact analysis for dependencies. The install script updates the main schema, then also drops the local copy of the object in the developer's schema who made the change and re-establishes the synonym there to get back to status quo for the change monitoring. Finally, it then updates itself in all of the developer areas via OMBPlus. So, each morning the developers return to an updated and synched environment as far as the underlying structure.
This takes care of merging structural issues, and the management of the team should minimize other metadata merging by managing the worklist of who is to be working on a given mapping or process flow at a given time. Anyone found to be doing extraneous changes to a mapping or process flow when it is not in their job queue without getting pre-approval will be spoken to VERY firmly as this is counter to policy. And yes, OWB objects such as mappings are then also coordinated to the central project via import/export. OMBplus scripts also propogate these changes daily across the team as well.
Yep, there is a whole lot of scripting involved to get set up.... but it saves a ton of time merging things and solvinv conflicts down the road.
Cheers,
Mike

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