Can you write Application.log from an EJB?

I can write to my EAR's Application.log file from a servlet using the ServletContext's log method. But I can't find a way to do the same from an EJB. Anyone know if it's possible?

Yes have a read of - Working with Plan Types
Cheers
John
http://john-goodwin.blogspot.com/

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Accessing Application Scope from an EJB

I'm not sure of the best way of doing this:
The set up:
We have a rather large J2EE application that is composed of only servlets and JSPs at the moment (When the application began development EJB was in its infancy and not feasible for the development of the app). Some of the new deployments of the app involve distributed webserver over 4 JVMs and 2 machines. When a user connects the servers load balancing decides which particular JVM they should be connected to. We perform large data caching into the servlet application scope to avoid having to access the database every time a change is made by a user to certain tables in our database. The data caches are stored in hashtables in the servlet application scope.We seem to have no way to determine what other JVMs are running or which JVM a user is currently connected to.
The problem:
Apparently the application scope is for a particular JVM. This means that when a user makes a change to a data cache the change doesn't effect users in the other 3 JVMs of the application, only the users who, due to load balancing, happened to be connected to the same JVM as the one where the change was made.
Our possible solution:
We were thinking that we could set up a queue (such as MQSeries from IBM) and any time a change is made to one of these data caches put a message on the stack saying that the particular table had been updated. Then a MDB would be listening asynchronously and digest the message from the Queue and recache the tables from the database.
So here are my questions:
1. Would this work? Would putting a MDB in the EJB Container give each JVM the MDB in the first place, or would this mean it would pick one of the JVMs to deploy the MDB on and still not fix our problem.
2. If this does work, how do I access the hashtables stored in the Servlet Application scope from the MDB. I can't seem to find any method available to the MDB (or any EJBs for that matter) that can access the servlets Application scope.
3. Is this the best way to do this? Or is there a better way to share data between seperate JVMs that I don't have a URL to (It's all ambiguous and handled by the server as to which JVM actually gets the connection.)
Just in case this is needed:
We are running IBM WebSphere 5 Application Server and the database could be anything from DB2 to Oracle.
Thanks in advance for any possible help.

You wont get any api for directly accessing Servlet application objects from any ejb. I dont think MDB either solves your problem directly. Indirectly you can place a request to some servlet (should be there for each JVM and web application ) and update your application scope variable. I would suggest you to cache the data in database if the size of cache is large. otherwise any open caching tools may help you.

How can you change property files of a EJB at Runtime?

Hi,
I have got an ejb and want to change my variables which I stored in property file at Runtime.
But the property file isn´t in the jar-file of my ejb...
How can I add it.
Or How can I change the property file without new compilation.
Thanks
Uli

Hi Uli,
the previous post is generally correct, but without taking any part in the sensibility of this (there are valid reasons why you would not store the values in a DB) it would be necessary for you to be a bit more specific.
Is your problem that you can not see the file from your EJB or that you don't know how to change a property file entry in general?
Cheers,
Kalle

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Can you get values back from a stored procedure via OUTPUT parameters?

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I thought I read some reference that DI could not get the values from OUTPUT parameters but I could not find it again (don't know if it is in any of the documentation or referred to in a forum.
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This isn't exactly an answer to your question, but I'll point out that, given that you're resorting to a SQL script in the first place, there's no reason you can't also turn the output parameters into a regular result or record set. (The following uses T-SQL, although I think it's pretty generic.)
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Can you transfer picture files from an older version of aperture to aperture 3?

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Can you write an excel file on client machine instead of on the server

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HT202213 When using home sharing, can you copy music permanently from an iTunes library to an iPod touch?

When using home sharing, can you copy music prmanently from a iTunes library to an iPod touch? Is it possible when home sharing music from my Mac to an iPod touch, can you copy the shard music on the ipod touch in to the ipods library?

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Can you move your notes from one iphone to another and how?

Can you move your notes from one iphone to another and how?

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HT202213 can you setup home sharing from your iPad ?

can you setup home sharing from your iPad ?

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How can you move the objects from one server to another?

how can you move the objects from one server to another?

Hi,
Collecting objects for Transporting
1. rsa1->transport connection
2. left panel choose 'object type', middle panel choose 'infocube' and 'select objects'
3. then choose your infocube and 'transfer'
4. will go to right panel, choose collection mode 'manual' and grouping only 'necessary objects'
5. after objects collection finished, create request
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7. When you click the Save on the change package, it will prompt for transport. Here you can provide an existing open transport request number, or if you like here itself you can create a new one.
8. You can check the request in SE09 to confirm.
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Lets say you are transporting from BWD to BWQ
Step 1: In BWD go to TCode SE10
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Note: First release the child request and then the parent request
Steps below are to import transport (generally done by basis )
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Step 3: Double Click on the line which says BWQ (or the system into which transport has to be imported)
Step 4: Click on refresh button
Step 5: High light the trasnport request and import it (using the truck icon)
Transport
http://help.sap.com/saphelp_nw2004s/helpdata/en/b5/1d733b73a8f706e10000000a11402f/frameset.htm
http://help.sap.com/saphelp_nw70/helpdata/en/0b/5ee7377a98c17fe10000009b38f842/frameset.htm
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/media/uuid/224381ad-0701-0010-dcb5-d74236082bff
Hope this helps.
thanks,
JituK

We are evaluating the use of iPod touch devices to record best practice videos on our manufacturing floor and to post to an internal Moodle web site. How can you upload a video from the iPod touch to a site other than YouTube?

We are evaluating the use of iPod touch devices to record best practice videos on our manufacturing floor and to post to an internal Moodle web site. How can you upload a video from the iPod touch to a site other than YouTube? The Moodle upload interface is expecting a file selection dialog box like windows or OSX. I do not want to have to go through an intermediary step of messing with a pc.
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It should be around 7 and a half gigs. In iTunes, across the bottom there should be a bar that show how much storage is being used and by what. (music, movies, apps, etc.) To make music take up less room, you can check the box to make it convert the music to 128kbps AAC. This lowers the quality, but with most earbuds and speakers, you can't even tell the difference.
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Can you see ink levels from Eprint center for the OfficeJet 7500A/E910

Can You monitor ink levels from eprint center for the OfficeJet 7500A/E910?
This question was solved.
View Solution.

Hello Raimonds,
To answer your question, you are not able to check your ink levels from ePrint Center. The only thing that you can do in ePrint Center is monitor the status of your recent print jobs that you send via ePrint and monitor the status of connection of your printer to the ePrint Servers.
If I have SOLVED your issue, please feel free to provide KUDOS and make sure you mark this thread as SOLUTION PROVIDED!
Although I work for HP, my posts and replies are my own opinion and not those of HP.

Crystal Report XI: Can you write your query in SQL instead of using the GUI

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In crystal report version XI, can you write your query in sqlplus and then use the crystal report designer to build your report instead of using the GUI . I would like to be able to go database and show sql query and open that query and make changes directly there, is that possible on this version, if yes is there a setting somewhere? Please let me know.
Thank you
alpha

Moved to Database forum.
No you can no longer modify the SQL directly. Use a Command Object to enter the SQL directly.
Thank you
Don

Can you write Application.log from an EJB?

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