Servlet Transaction engine for 5000 Applet Clients

Hi,
We want to develop transaction server for 5000 client terminals using java client and server based method.
That means, there 5000 numbers of terminals will send request to server frequently and get the response also.
The transaction data will be stored in the oracle database also. For this needful how do I architech the system.
We prefer Applet (Swing) will be the client application and servlet will be the server application which will run inside the application server.
So if any one have experience on this kind of project please guide me system design.
Apart from this Applet & Server communication, is there any framework which will give the best solution for our requirement.
Our application is same like ATM machine transaction. Like ATM machine, how should i define the server engine and client tier application.
by
dhaya

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Hi,
I've coded a chat server/client applet and found that I need to set socketpermissions when using over the net.
I put the following line in my java.policy file under my jdk
permission java.net.SocketPermission ":6288", "connect,accept, listen";
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Can you tell the transaction for creating the client.

can you tell the transaction for creating the client.

Hi,
Please check this links.
http://help.sap.com/saphelp_nw04/helpdata/en/69/c24c4e4ba111d189750000e8322d00/content.htm
http://help.sap.com/saphelp_nw04/helpdata/en/69/c24c0f4ba111d189750000e8322d00/frameset.htm
http://www.sap-img.com/bc049.htm
Cheers,
Simha.
Reward all the helpful answers..

No service for system SAPNID, client 800 in Integration Directory

Hi All,
I am getting No service for system SAPNID, client 800 in Integration Directory in tRFC monitor (SM58).
My scenario is IDOC to File.
I did following step in R3.
1. Created RFC destination pointing to XI systems (name:XID)
2. Created IDOC port (name: SAPNID) and use above (XID) RFC in RFC destination.
3. Create Partner Type LI (Partner No. 3000) and add message type ORDERS, set the receiver port (SAPNID) created above.
XI Side.
1. Create Technical System (Name : XID)
2. Business Systems (Name: R3XID)
3. In Integration Repository.
 Created Data Type
 Import IDOC ORDERS.ORDERS04
 Created Message Interface
 Created Message Type
 In Mapping Object created Message Mapping and Interface Mapping.
4. In Integration Directory
 Created the Scenario (name : FILE_FROM_IDOC)
 Assign Business Systems as R3XID
 Create communication channel(name: FILE_ORDERS_COM_CHNL)
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 Interface Determination
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IDOC is triggered correctly but in tRFC monitor I am getting following error
No service for system SAPNID, client 800 in Integration Directory
With regards
Sunil

Hi Udo/Renjith and Rakesh,
Thanks for quick reply and appreciate you help.
Now I can say that there is some problem with my Technical Systems or Business Systems, let me give you details regarding my Technical/Business systems.
During post-Installation i created Technical/Business System, following are the details regarding these systems.
Technical Systems.Detail
System Name: XID
System Home: crmides
Installation Number: INITIAL Change...
Release: 640
Description:
Administrative Contact:
TMS Domain:
TMS Transport Group Name:
Clients: 100 800 Add...
Message Server: XID crmides
Central Application Server: crmides_XID_00
Secondary Application Servers: Add...
Internet Transaction Servers: Add...
Installed Products: SAP EXCHANGE INFRASTRUCTURE, SAP EXCHANGEINFRASTRUCTURE 3.0 XID
SAP R/3, 4.5B XID on crmides
SAP R/3, 4.6C XID on crmides
Add...
Installed Software Components
Business Systems:
1. R3XID
2. SAPNID
Earlier I have only one Client (100) and One Busines Systems (R3XID)
My XI Systems is XID Host : crmides Client : 100 System Number : 00
My R3 Systems is NID Host : netbw Client : 800 Systems Number : 02
Business Systems Detail
Name: R3XID
Description:
Administrative Contact:
Business System Role: Integration ServerApplication System
Pipeline URL:http://crmides:8000/sap/xi/engine?type=entry
Integrated Business Systems: SAPNID
Group: (No Group Assigned)Edit Groups...
Transport Targets:
Technical System: XID on crmides Change...
Client: 100 of XID
Logical System Name: SAPNID
Installed Products: SAP R/3, 4.5B XID on crmides
SAP R/3, 4.6C XID on crmides
SAP EXCHANGE INFRASTRUCTURE, SAP EXCHANGEINFRASTRUCTURE 3.0 XID
Software Components: ABC, 1.0 of knack
R/3 CORE 4.5B
SAP ABA 4.6C
SAP ABA 640
SAP APPL 4.6C
SAP BASIC JAVA LIBS 6.30
SAP BASIS 4.6C
SAP BASIS 6.40
SAP GUI FOR WINDOWS 4.5B
SAP GUI FOR WINDOWS 4.6C
SAP GUI FOR WINDOWS 6.20
SAP HR 4.5B
SAP HR 4.6C
SAP ITS 4.6B
SAP ITS 4.6C
SAP J2EE ENGINE 6.30
SAP J2EE ENGINE CORE 6.30
SAP JAVA TECH SERVICES 6.30
SAP JCO 6.30
SAP SOFTW. DELIV. MANAGER 6.30
XI ADAPTER FRAMEWORK 3.0
XI CONNECTIVITY SE 3.0
XI TOOLS 3.0
During Post Installation I had one Technical Systems (XID) and one Business Systems (R3XID), after that I created one more Business Systems (SAPNID).
SAPNID Business Systems Detail
Name: SAPNID
Description:
Administrative Contact:
Business System Role: Application System
Related Integration Server: R3XID
Group: (No Group Assigned)
Transport Targets:
Technical System: XID on crmides Change...
Client: 800 of XID
Logical System Name: SAPNID
Installed Products: SAP R/3, 4.5B XID on crmides
SAP R/3, 4.6C XID on crmides
SAP EXCHANGE INFRASTRUCTURE, SAP EXCHANGEINFRASTRUCTURE 3.0 XID
Software Components: ABC, 1.0 of knack
R/3 CORE 4.5B
SAP ABA 4.6C
SAP ABA 640
SAP APPL 4.6C
SAP BASIC JAVA LIBS 6.30
SAP BASIS 4.6C
SAP BASIS 6.40
SAP GUI FOR WINDOWS 4.5B
SAP GUI FOR WINDOWS 4.6C
SAP GUI FOR WINDOWS 6.20
SAP HR 4.5B
SAP HR 4.6C
SAP ITS 4.6B
SAP ITS 4.6C
SAP J2EE ENGINE 6.30
SAP J2EE ENGINE CORE 6.30
SAP JAVA TECH SERVICES 6.30
SAP JCO 6.30
SAP SOFTW. DELIV. MANAGER 6.30
XI ADAPTER FRAMEWORK 3.0
XI CONNECTIVITY SE 3.0
XI TOOLS 3.0
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Reg: Is it possible in weblogic 5.1 or 6 to get Transaction suport for MQseries & Oracle

 Hi
 I would like to know whether weblogic 5.1 or 6 provides support in a single transaction,
 transaction support for both oracle and MQseires, if so where can i find suitable
 documentation on this topic
 with regards
 Priya


The answer is definitely yes, starting in WLS 6.0, with
 some two reasonable limitations.
 There are limitations are the following:
 1. It must be on the server side. The registration of the XAResource
 can't happen in a client. It must happen in a startup class
 or EJB or servlet, etc. You can start it from a client (invoke
 an EJB or servlet) but the resource work must be
 on the server side.
 2. MQSeries can't be included if it is being used to drive a
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 from MQ Series to WLS outside of a transaction, after
 which WLS will start a transaction (if so configured) and
 pass it to the MDB, the MQ Series message is not part
 of the transaction. The JavaSoft specs don't handle this case.
 For WLS JMS, this works because we have defined such
 an interface and implemented it. At least one other vendor
 understands the importance of having this feature and is
 interested in implementing it (it's not IBM).
 So to do what you want, it is necessary to:
 1. Use the XAResource version of the JDBC driver for Oracle.
 WLS is smart enough to look at the driver and see if it
 implements the XAResource interface and automatically
 register it as a resource. This has been documented
 in this newsgroup already or see
 http://e-docs/wls/docs60/adminguide/jdbc.html#1075694.
 2. Register the XAResource interface for MQSeries programmatically
 in the application. The code to do this has been posted
 at the BEA developer site for a few months in an article
 entitled "Using JTA Transactions to envelope WLS JMS and
 IBM MQSeries" (could I be more explicit), located at
 http://developer.bea.com/docs/jmsjta.jsp. It references
 another document that has more code, describing how to
 plug in a "foreign" (non-WLS) JMS provider, of which MQSeries
 is one, in a non-transaction manner (you need to do that
 first and then just add the resource registration) - see
 http://developer.bea.com/docs/jmsproviders.jsp.
 All of the necessary code is included in the documents (including
 how to download and install the Java libraries for MQSeries).
 Several people have told me that they have been able to
 use this as a starting place for their applications.
 You might also want to look at the JMS FAQ at
 http://developer.bea.com/docs/jmsfaq.jsp.
 In 6.1, support is added for importing foreign transactions.
 That means that in 6.0, WLS can drive a transaction with
 WLS JMS, Oracle, and MQ series, with WLS being the
 driving force. In WLS 6.1, a non-WLS transaction manager can
 drive a transaction that includes (transactionally infects)
 WLS resources (like WLS JMS).
 There are no white papers that I know of in this area and I haven't
 tested it myself (the goal is to have someone try out
 having WebSphere drive a transaction with WLS resources, soon).
 "Priya" <[email protected]> wrote in message news:[email protected]...
 >
 > Hi
 >
 > I would like to know whether weblogic 5.1 or 6 provides support in a single transaction,
 > transaction support for both oracle and MQseires, if so where can i find suitable
 > documentation on this topic
 >
 > with regards
 > Priya

Applet client with DataForms using dial-up

Jdeveloper 3.2, IAS9i
Hello,
Somebody knows if the DataForms are efficient via dial-up?
For example in the Online Orders sample,with an applet client (with DataForms, using dialup to connect to app. server). What happens when an user insert a new employee record. When an user navigate around the fields ocurrs a validation inside the Business Object Tier. What happens with the remote round trips?, It's faster?.
Jdeveloper 3.2.2
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Thanks a lot.
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Any application designed to run over a dial -up connection must be extremely sensitive to the fact that dial-up connection is very slow due to it's bandwidth.
Applets by default require downloading a lot of files to the browser. So you must download your app code, the jdbc drivers and any other required classses.
Applets using BC4J components then must also download the BC4J code. BC4J uses a data cache, so data is also downloaded.
Avoid using applets in this design.
Use JavaServerPages(JSP's) (or servlets) which are a much "thinner" version of the "Thin client" group of tools(applets, servlets jsp's)
WHY JSP's over servlets ??
They are quicker to write than servlets

Best way for an applet to contact EJB ?

Which is the best way for an applet to connect EJB?
1) Applet --> servlet --> EJB
2) Applet --> EJB
What is the pros and cons of both approach?
Thanks

Hi there,
This is a tricky question and it would be interesting to hear what others think.
Probably the key factor is what is available to you in terms of communications between the EJB and the applet. If you are on an intranet then having the applet talk directly to the EJB looks favourable as you will almost certainly be able to use RMI/IIOP for communications between the applet and the EJB. If you are forced to use HTTP as the communications protocol then you can't talk directly from the applet to the EJB but there again talking to a Servlet from an applet throws up complications of it's own. In this case you should consider not using an applet at all and instead use a JSP page or pages to handle the presentation.
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Developer Technical Support
Sun Microsystems
http://www.sun.com/developers

IDOC-Xi-IDOC: CRM - XI -R/3 (No service for system SAPOCC, client ** in ID)

Hi all
I am doing a scenario IDOC - Xi - IDOC where CRM sends an IDOC to R/3 via PI.
I have configured everything in OCC (CRM system), PI and BSC (R/3 system) but when I test it with the transaction WE19 in OCC nothing happens in PI or BSC.
All i can see if a message in SM58 transaction in OCC.
Function Module - IDOC_INBOUND_ASYNCHRONOUS
Target System - XI.
Status Text - No service for system SAPOCC, client *** in Integration Directory.
Could anyone tell me what is the problem.
Your help will be very much appreciated
Regards
Naina

Error message: No service for system SAPCRD client 201 in the integration directory
Cause: There is no service without party in PI server that represents OCC server with client details.
Solution:
We send IDocs from system OCC to PI. In the control record (Segment EDIDC40) of the IDoc, the SNDPOR (SenderPort) field contains the value "SAPCRD". The client of the sending system is determined by the MANDT field of the control record. The system ID and client are then used to determine a service without party of the type (business-system/business-service)
In System Landscape Directory (SLD) create a technical system for OCC system and assign a client for the same. Don't forget to assign an "ALE logical system" to the technical system created. Create a business system for this technical system. Then Business System can be imported under service without party/update the details existing in PI.
Edited by: Rodrigo Alejandro Pertierra on Jun 23, 2010 10:28 AM

Is there any way to use JDK1.4PreferenceAPI in JWS + Applet clients

Dear Friends,
Actually, we are in process of reusing the J2sdk1.4 new utilities like (Preferences API ) in all the applications means Application client, Java WebStart
Client , Applet client. As for as Application client is concern , we do not have any problem at all, Its because of, J2sdk1.4 Preferences API provides an
option to Plugin our Implementation for reading and writing User Preference Information.
But Incase of JWS client or Applet client , we can not Plug in our own Preference Factory Implementation , because of some security concern. We came
to know that it is possible via setting system property -D option and signing the Jar which uses this Preference API class. But it will create more problem
for our client while using our application . So we need to use JDK1.4 Preference with out using above two methodology.
Is there any possible solution which can help me to use the JDK1.4 Preference API in all the clients????.
Please do help me as early as possible. This is very very important for us.
Thanks in advance
with regards,
Pitchaimani

Dear Sir,
Thanks for your immediate reply, I had solved the problem by putting both the classes in a single signed jar. Now i am get into the new Problem. The problem is, even if i set the SystemProperty for Preference Factory, it doesn't take effect at all.
Actually what happened was, while starting the
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Your help is highly appreciated
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Pitchaimani

How to take unreconcilled transactions report for a date range ?

hi all,
How to take unreconcilled transactions report for a
data range ?
we have taken unreconcilled transactons from
external reconcillation using filter option mentioning
range of dates,But when we take print out using PLD,
it showing unreconcilled transactions for all dates.
But our client requires it as a standard report from SAP ?
Our client is using SAP B1 2005B PL39.
Jeyakanthan

Hi
Financials -> Financial Reports -> Accounting -> General Ledger.
In the 'Display' dropdown select, 'Unreconciled' .
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Creation of a database engine for mobile devices using j2me

am trying to develop a database engine for mobile devices.. it is to develop a miniature version of the DBMS that
can be deployed on a mobile phone..I have to develop my own code for performing tasks such a s creating a table,
inserting values into it, selecting from it etc..
I limited my self to develop the software so that it can perform 3 functionalities of create, insert,select..
I should be taking the details such as table name and its parameters from the user and then should be able to
create a suitable data structure for it(i tried to develop a class)...
Usage of RMS package helps me partially in this.. I did that and ll be doing that..
I got stuck while developing the code for creation of a table.. I am facing problems in creating a dynamic data
structure for a table and also to use such data structure else where in my project..
I need help in developing an algorithm for this..
I would be very grateful to u all if u help me out in developing the code for this project..

I'm sorry for the amount of time it took me to get back. Derby is an open source database written entirely in Java. I do not know if it can support resource constrained devices like MIDP compliant, but may work okay with CLDC.
But outside of Derby being a solution, let me give you a few ideas off the top of my head.
Set up a database server in a separate thread. This server will really be your controller for RMS access.
Since RMS is just a big sequential 'pipe' you will have to think of data as 'frames' - (starttable) (tableID) (tablename) (data) (tablename) (data).....(endtable).
When you need to write additional data, just append it to the end of the RMS object.
When you need to retrieve data, thing are more complex.
1. Read in all data, looking for your particular tableID. This may be made much easier using RMS filters - (I'm not sure, I've never used them)
2. Once start of table of interest is found, stick the data elements in either a java vector or array until you reach the table end identifier. I think vector will be a better choice - trust me. (I think its available in J2ME...)
3. Package this into a do while loop until the element you are searching for is read. If you need to do some sorts on the data or something else that requires the all the data to be present then you need all the data for that particular table. One thing will always be clear. The first data you grab will always be some start table identifier and the last data you grab will be an end table identifier. We just don't know which table because of how we put stuff in the RMS resource.
This provides you a few positives as well as negatives:
Positive:
1. Fast data writes, no need to search for a particular table before accessing it, nor do you need to search for an index in that table.
2. When looking for data, data may* be found without searching through the entire table. This is accomplished with RMS filters or logic test within the RMS read loop.
Negative:
1. Slow when all data of a table is needed (i.e. compute sums or averages of entries). The entire RMS database must be read to ensure all the entries are searched. An example of how this is a problem is as follows: You have 5000 entries in you RMS database resource and you are looking to compute the average of a value in some table. When you first wrote the data to the table, it was done sequentially and no other data for that table exist. But we can't tell if that's the case, so we have to read through all 5000 entries to make sure we looked for every piece of data.
Beacuse of this issue, this database structure, performance may be fine for 50K - 100K entries (depending on table element size), if the reading requirements don't force full data reads. Otherwise, 25K may be an upper limit.
I hope this helps.
Edited by: estarkey on Mar 17, 2009 9:15 PM
Edited by: estarkey on Mar 17, 2009 10:01 PM

Transaction code for custom table

Hi there,
I created one custom table. I created Tbale Maintenance Generator for this. I have to create transaction code for this table so that user can directly open this custom table in SM30. Can anybody suggest on this. is there any other way to do this so that user can directly open this custom table in SM30 mode?
Regards,
Zakir.

Hi
Check this link for creating a transaction code for a TM
http://www.sap-img.com/abap/create-a-table-maintance-program-for-a-z-table.htm
Please go throught below link ..... it was given with screen shots of the T.code Creating for the table after the maintaince view had been created ......
http://www.sapdevelopment.co.uk/tips/tips_tabmaint_tcode.htm
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/abap/how%20to%20implement%20events%20in%20table%20maintenance.doc
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