Datasource Connection

Hello, I'm tryng to write an application that must be connected to a database.
-In my EAR Project I declared a dataSource Alias (in data-source-aliases.xml).
-In my EJB Project in ejb-jar.xml (and in ejb-j2ee-engine.xml defining the JNDI name) I passed the dataSource alias (in reaource-ref folder).
But when I try to connect to the DB it doesn't work.
In my Java class I'm using:
ctx = new InitialContext();
ds = (DataSource)ctx.lookup("jdbc/<DataSourceAlias>");
Is this the right procedure or I'm missing something??
Another question: this application is a WebService, if I need to test can I use the WS Navigator's test in my Enterprice Portal??
Thank You in Advance

Check this thread: Web Dynpro | EJB | JNDI lookup
class loading Issue in EJB
This is tutorial for creating and using EJBs in Web Dynpro:
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/1f5f3366-0401-0010-d6b0-e85a49e93a5c
For your last question: You can use WS Navigator's test.
Regards,
Ashwani Kr Sharma

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Loosing datasource connection in a server thread

Hi,
In a backing bean I start a long term thread that uses the datasource connection taken from application module.
Everything works fine but after a period of time between one and two hours the connection is lost and server throws a
<BEA-001112> <Test "SELECT 1 FROM DUAL" set up for pool "AEE2010DS" failed with exception: "java.sql.SQLException: Connection Closed".>
Is there any way to stop the server from closing the connection that is used in a separate thread, programmatically or using configuration?
Any comment will be helpful,
Thanks

That looks like something external is killing the connection, either the DBMS or a firewall.

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I am a beginner in Oracle BPEL process Manager,
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" Message Handle error:
An exception occurred while attempting to process the message "com.collaxa.cube.engine.dispatch.message.process.SetDbDefaultMessage."the exception is tranaction was rolledback........"
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hi all
my question is about How the connections stored in a Jndi server datasource pool are managed.
For example, I'm developing a J2EE application with Ejbs and Datasources, etc. I saw that when I want to retrieve a connection from datasource to work on it I need do something like this:
For example to retrieve a datasource connection:
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thanks in advance

If I have three prepared statements right in a row with nothing in between should I close the connection after each one and then get it again?
Seems like I would be just as well off to just get the conn once do the 3 things then close it.
and in spots I might actually be doing something as i step through the first result set so can i use conn.preparedStatement() in the loop many times without getting the connection and closing each time through the loop?
i of course close all PS and RS and use diff PS2 and RS2 in the loop so i 'm just talking about keeping the conn open while (RS.next()) and use it multiple times to conn.preparedStatement() inside the loop?
or should i use 2 connections lol and open conn1 and then in loop use conn2 and close it each time around the loop and then close conn1 when i exit the loop?

EnvironmentException: -600: Could not retrieve a datasource connection

Hi,
I am getting below errors in my logs has anybody have any idea about below errors.
0.4 IJFWK-302 itseelm-lx4065.xxx.com 2013-02-12 05:55:40 EBCCOP01 971 NA BsGetDeliveryMethods irwuser irwuser EBCCOM01 28442421A3EF52E9C8692AA9F19FFC42 37 <?xml version="1.0" encoding="UTF-8"?> <SystemError><Message>-302: Error caught while executing the business task. Marked transaction for rollback; nested exception is: com.xxx.xxxx1.util.exception.EnvironmentException: -600: Could not retrieve a datasource connection for user 'null'.; nested exception is: com.ibm.websphere.ce.cm.StaleConnectionException: The Network Adapter could not establish the connectionDSRA0010E: SQL State = 61000, Error Code = 20</Messa
Thanks
Edited by: Ramstimo on 15 Feb, 2013 9:34 AM
Edited by: Ramstimo on 15 Feb, 2013 9:36 AM

Hi,
Can you paste the jdbc connection that you have used in your application code here?
Regards,
Kishore

Script for checking datasource connections

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Hi
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SSRS 2005 change datasource / Connection String

Hi All
I need to change the some shared data source on ssrs 2005 for the migration of some dbs.
Can I do it on tsql, I need to update the datasource / Connection String only for the reports that uses it.
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Thanks a lot in advance.

It is not recommended to update records directly in Catalog table.
You can try
programmatic way to update that.
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Regards,
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Blog: http://vspatel.co.uk
Site: http://lehrity.com

Infosource and datasource connection

Hi Experts,
In the BI 3.5 business content, what is the best way to decide which datasource connects to which infosource? For example if i were to install BI content for SD i have about 8 datasources and 20 infosources and 6 cubes only.
How can i setup a dataflow based on Bi content only?
Should i make a decision based on the fields i am interested in? Please educate me on this.
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K

Hi Krishna,
Go to RSA1--->, right mouse show data flow you can double click the elements.
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hope this helps.
Regards
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DataSource & Connection pools

Hi,
I have a couple of question about DataSources and connection pools.
1. Are DataSources & connection pools the same thing?
2. Typically the data-sources.xml file, shows in plain text a user/name password combination. Isn't this a security risk? Can anything be done about this?
thanks in advance,
Kevin

Hi Kevin --
1. Are DataSources & connection pools the same thing?
A DataSource enables the clean abstraction of the database connection details from the code.
A DataSource has a name, and it provides you with access to connections via some configuration information it has (ie database host, port, sid, username/password). To get a connection, you first locate the datasource, and then ask it for a connection.
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2. Typically the data-sources.xml file, shows in plain text a user/name password combination. Isn't this a security risk? Can anything be done about this?
In the current production version and prior, the data-sources.xml file stored details in clear-text. Besides ensuring that the file has the correct level of OS priviliges set on it to ensure it can't be easily viewed, the only other workaround was to specify the username/password as parameters to the ds.getConnection() method. This puts the username/password back into the code so it breaks the concept of clean abstraction, but it was an option to avoid it being in the xml file.
In our 904 release (available as a dev preview now on OTN) we support the use of password indirection for the passwords in this file. This enables you to specify a logcal name for a password, then create the actual user/password combination in our encrypted JAZN user repository. When the datasource is used, the container follows the indirection and retrives the password from the encrypted storage area.
I'm pretty sure this is documented in the beta version of 904 J2EE Services Guide, see
http://otn.oracle.com/tech/java/oc4j/904/doc_library/services-904-preview.pdf
cheers
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In Report Builder 3.0 using a wizard to create a new Report, select create a DataSet. It opens a "Choose a connection to a datasource" dialog box. It shows previously used datasource connections of other ReportSevers I have accessed long
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Hi Saty
You can find more information about Remove previously used datasource connections.
http://connect.microsoft.com/SQLServer/feedback/details/679232/cannot-remove-old-unusable-data-source-connections-from-report-builder-3-0-wizard-dialog
SUHAS http://suhaskudekar.blogspot.com/ Please click "Mark as Answer" if this resolves your problem or "Vote as Helpful" if you find it helpful.

Test SSRS DataSource Connection Programtically

Hi, Dear
I have created a SSRS Datasource programatically.
I also would like to Test this SSRS Datasource Connection programatically.
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Is there a way to do it programatically?
Regards
Ming

Hi Jiulidaji,
According to your description, you want to test the SSRS Data Source Connection programmatically. Right?
In program design, generally we create a separated class/function for database connection. If we want to test the connection, we just need to test this class/function only. For testing the connection, we can directly output/print the
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Best Regards,
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Java.lang.NullPointerException when using DataSource connection and executing CallableStatement

Hi Guys
I am having some problem as I am using a DataSource for connections and randomly
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java.sql.SQLException: java.lang.NullPointerException
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Help will be appreciated..

Hi Guys
I am having some problem as I am using a DataSource for connections and randomly
the CallableStatements and PreparedStatements created from this DataSource becomes
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java.sql.SQLException: java.lang.NullPointerException
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     at .........
Help will be appreciated..

Oracle Clobs, datasources, connection pools, RMI ...

Hello all,
We are using Weblogic 7.0, windows 2K server, Oracle 9i and are trying to read from a clob. Using
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On 3 Feb 2004 12:51:26 -0800, Raymond Tiong <[email protected]> wrote:
>
Oracle Database Server 9i supports the usage of LABELS to enforce highly
granular
resource access restrictions at the database level independent of the
application
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not just the application, accessing the database must be known. Oracle
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Server (Oracle's J2EE product line) solves this by providing the ability
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Hi,
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http://www.oracle.com/technology/products/jdev/howtos/1013/oc4jjaas/oc4j_jaas_login_module.htm
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Any idea's?
Thanks

Ah, fixed it.. the // slashes weren't needed.
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Context ic = new InitialContext();
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Hi people!
I have a question on the above code.
I tried it myself on OC4j 9.0.3 (the one that comes with JDeveloper) and I noticed the connections on the pool. The problem is the behaviour of this code when the datasource is configured to have as a "max_connections" attribute a value less than 10, e.g. 8.
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 username="myuser"
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 inactivity-timeout="60">
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Datasource Connection

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