DataSource and JNDI
Ight guys i am soo confused... I am creating a connection pool and i have used the little tool to create the pool and the datasource.. Now how do i call the datasource to be able to retrieve the connection.. Sorry for the question i just am not understanding everything that i have been reading
Well, your question is how to connect to an established connection pool? Are you sure your pool is actually working? You didn't post any code on how you set that up.Also, without the setup portion, we don't know what reference name you gave your connection pool, so we don't know how to look it up. Please post the portion of your server.xml where you created the resource and the portion of your web.xml where you reference it, and we can take it from there.
Similar Messages
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Hi
I'm a beginner in JNDI
i'm used to connect the Oracle DB using JDBC ,
now i want to use the JNDI to get a connection pooling
i've read alot of Documentation about this field and i need to know how to set the LookUp Name to my database
thank youI am not sure how to add configuration in Oracle App Server. But this how you have to do.
Create a connection object in the app server in the name jdbc/Test . (jdbc/Test is the name of the connection which will be used to get refernece from the JNDI). In the App server you have to create the connection with you userid, password and URL for the connection.
URL - jdbc:oracle:thin:@servername:1521:databasename
You may need to have the connection from EJB or may be from the JSP or bean class. If the connection is required in EJB, then EJB container will get the reference. For JSP or Bean the web container will get the reference. You need to make specific entries in ejb-jar.xml and oracle-ejb-jar.xml (I hope there will be file in this name. Beacause for me I have sun-ejb-jar.xml for Sun App server.) for EJB container and in web.xml and oracle-web.xml for web container.
Here are the entries for web Container -
In web.xml put this entry -
<resource-ref>
<res-ref-name>jdbc/Test</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
In oracle-web.xml put this entry -
<resource-ref>
<res-ref-name>jdbc/asta</res-ref-name>
<jndi-name>jdbc/asta</jndi-name>
</resource-ref>
Here is how you will get the connection -
Context ctx = new InitialContext();
DataSource ds = (DataSource) ctx.lookup("java:comp/env/jdbc/Test");
Connection conn = ds.getConnection();
Thanks -
Problem using JDBC (JNDI) DataSource and data-sources.xml w/ OC4J
I have a JClient application developed in JDev X. It works fine when using a JDBC URL for the connection (which then writes the connection into the BC4J.xcfg files, one for each application module). However, I would like the app to retrieve the data source from the server's data-sources.xml file. However, when, on the configurations tab of the application module I set the connection type to JDBC DataSource, and give it the JNDI name, it does not work, either with the embedded OC4J or the stand-alone OC4J. Any suggestions???
In the stand alone OC4J I verified that the data source exists (using java -jar admin.jar ormi://nemethzoltan3 admin welcome -application adatklinika -testDataSource -location jdbc/adatklinikaCoreDS) ... so the data source is defined in the data-sources.xml. Of course the error I get is JBO-30003.
If I just try to "test" the data source in Jdeveloper (using the context menu of the app module, and setting it to use the adatklinikaCoreDS) I get a JNDI error: unable to lookup data source and at level 3 a "javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial". I checked, the data source is defined under tools->embedded OC4J properties->data sources.
If I try to run the main form, simply nothing happens.
Please help!!!Ok, figured out why running from jdeveloper wasn't working: the embedded OC4J server wasn't started (start it by running an html page from your project or something...and make sure you don't have a stand-alone oc4j running). AND more importantly it didn't have the library "embedded oc4j client" library included (project properties -> profiles -> development -> libraries)...which is needed for whatever reason.
Now to try and get it working with the stand-alone OC4J... -
EJB 3.0 and jndi lookup (simple question)
hi all,
i am newbie on Weblogic Application Server and i have some issues,
i have weblogic application server 10.0, also i have oracle timesten in-memory database, i have configured datasource and deploy my ejb 3.0 application, but i could not done jndi lookup?
here is my example:
1. one stateless session bean :
import javax.ejb.Remote;
@Remote
public interface InsertSubscriber {
public void insertSubscriber(SubscriberT subscriberT);
} 2. here is it's implementation :
@Remote(InsertSubscriber.class)
@Stateless
public class InsertSubscriberBean implements InsertSubscriber {
@PersistenceContext(unitName = "TimesTenDS")
private EntityManager oracleManager;
public void insertSubscriber(SubscriberT subscriber)
try {
System.out.println("started");
oracleManager.persist(subscriber);
System.out.println("end");
} catch (Exception e) {
e.printStackTrace();
}3 and my test client :
public class Client {
public static void main(String[] args) {
Context ctx = null;
Hashtable ht = new Hashtable();
ht.put(Context.INITIAL_CONTEXT_FACTORY,
"weblogic.jndi.WLInitialContextFactory");
ht.put(Context.PROVIDER_URL, "t3://192.9.200.222:7001");
try {
ctx = new InitialContext(ht);
InsertSubscriber usagefasade = (InsertSubscriber) ctx
.lookup("ejb.InsertSubscriberBean");
} catch (NamingException e) {
e.printStackTrace();
} finally {
try {
ctx.close();
} catch (Exception e) {
e.printStackTrace();
}what i did incorrect ???
i got error like this : Name not fount exception
when i tried to view jndi tree on weblogic server application console i found this :
Binding Name:
TimestenExampleTimestenExample_jarInsertSubscriberBean_InsertSubscriber
Class:
test.InsertSubscriberBean_o7jk9u_InsertSubscriberImpl_1000_WLStub
Hash Code:
286
toString Results:
weblogic.rmi.internal.CollocatedRemoteRef - hostID: '2929168367193491522S::billing_domain:AdminServer', oid: '286', channel: 'null'what does it mean how i can done lookup to jndi ?
Regards,
Paata Lominadze,
Magticom LTD.
Georgia.Hi All,
I am using the weblogic cluster with session replication and EJB 2.0 with Local entity beans.
for fail-over session should be replicated to another server so we can achive the same session if 1st server fails.
Suppose i m using two managed server(server1,server2) in the cluster.I am storing the object of class ABC into session and object contains the instance of Local-EntityBean home but i put that as a transient.I have also override the readObject and write object method.
when write object is called on 1st server,readObject method should be called on second server so we will be sure that session is replicating properly.
pleaase find the code below : -
public IssuerPageBean() {
initEJB();
private void readObject(java.io.ObjectInputStream stream) throws IOException, ClassNotFoundException {
stream.defaultReadObject();
initEJB();
initializeCommonObject();
private void writeObject(java.io.ObjectOutputStream stream) throws IOException {
stream.defaultWriteObject();
private void initEJB() {
try {
ic = new InitialContext();
issuerHome = (LocalIssuerHome) ic.lookup("java:comp/env/Issuer");
} catch (NamingException e) {
e.printStackTrace();
in my case if i am calling the constructor IssuerPageBean(),it calls the initEJB() method and lookeup the entity local home properly but when readObject method is called on another server only initEJB() method is called directly and getting the exception below :
WARNING: Error during create -
javax.naming.NameNotFoundException: remaining name: env/ejb/Client
at weblogic.j2eeclient.SimpleContext.resolve(Ljavax/naming/Name;Z)Ljavax/naming/Context;(SimpleContext.java:35)
at weblogic.j2eeclient.SimpleContext.resolve(Ljavax/naming/Name;)Ljavax/naming/Context;(SimpleContext.java:39)
at weblogic.j2eeclient.SimpleContext.lookup(Ljavax/naming/Name;)Ljava/lang/Object;(SimpleContext.java:57)
at weblogic.j2eeclient.SimpleContext.lookup(Ljavax/naming/Name;)Ljava/lang/Object;(SimpleContext.java:57)
at weblogic.j2eeclient.SimpleContext.lookup(Ljava/lang/String;)Ljava/lang/Object;(SimpleContext.java:62)
at weblogic.jndi.factories.java.ReadOnlyContextWrapper.lookup(Ljava/lang/String;)Ljava/lang/Object;(ReadOnlyCont
extWrapper.java:45)
at weblogic.jndi.internal.AbstractURLContext.lookup(Ljava/lang/String;)Ljava/lang/Object;(AbstractURLContext.jav
a:130)
at javax.naming.InitialContext.lookup(Ljava/lang/String;)Ljava/lang/Object;(InitialContext.java:347)
at com.lb.equities.veda.tools.salesvault.jsp.ClientPageBean.initEJB()V(ClientPageBean.java:218)
at com.lb.equities.veda.tools.salesvault.jsp.ClientPageBean.readObject(Ljava/io/ObjectInputStream;)V(ClientPageB
ean.java:191)
at java.lang.LangAccessImpl.readObject(Ljava/lang/Class;Ljava/lang/Object;Ljava/io/ObjectInputStream;)V(Unknown
Source)
at java.io.ObjectStreamClass.invokeReadObject(Ljava/lang/Object;Ljava/io/ObjectInputStream;)V(Unknown Source)
at java.io.ObjectInputStream.readSerialData(Ljava/lang/Object;Ljava/io/ObjectStreamClass;)V(Unknown Source)
at java.io.ObjectInputStream.readOrdinaryObject(Z)Ljava/lang/Object;(Unknown Source)
at java.io.ObjectInputStream.readObject0(Z)Ljava/lang/Object;(Unknown Source)
at java.io.ObjectInputStream.readObject()Ljava/lang/Object;(Unknown Source)
at java.util.HashMap.readObject(Ljava/io/ObjectInputStream;)V(Unknown Source)
at java.lang.LangAccessImpl.readObject(Ljava/lang/Class;Ljava/lang/Object;Ljava/io/ObjectInputStream;)V(Unknown
Source)
at java.io.ObjectStreamClass.invokeReadObject(Ljava/lang/Object;Ljava/io/ObjectInputStream;)V(Unknown Source)
at java.io.ObjectInputStream.readSerialData(Ljava/lang/Object;Ljava/io/ObjectStreamClass;)V(Unknown Source)
at java.io.ObjectInputStream.readOrdinaryObject(Z)Ljava/lang/Object;(Unknown Source)
at java.io.ObjectInputStream.readObject0(Z)Ljava/lang/Object;(Unknown Source)
at java.io.ObjectInputStream.defaultReadFields(Ljava/lang/Object;Ljava/io/ObjectStreamClass;)V(Unknown Source)
at java.io.ObjectInputStream.readSerialData(Ljava/lang/Object;Ljava/io/ObjectStreamClass;)V(Unknown Source)
at java.io.ObjectInputStream.readOrdinaryObject(Z)Ljava/lang/Object;(Unknown Source)
at java.io.ObjectInputStream.readObject0(Z)Ljava/lang/Object;(Unknown Source)
at java.io.ObjectInputStream.readObject()Ljava/lang/Object;(Unknown Source)
at weblogic.common.internal.ChunkedObjectInputStream.readObject()Ljava/lang/Object;(ChunkedObjectInputStream.jav
a:120)
at weblogic.rjvm.MsgAbbrevInputStream.readObject(Ljava/lang/Class;)Ljava/lang/Object;(MsgAbbrevInputStream.java:
121)
at weblogic.cluster.replication.ReplicationManager_WLSkel.invoke(ILweblogic/rmi/spi/InboundRequest;Lweblogic/rmi
/spi/OutboundResponse;Ljava/lang/Object;)Lweblogic/rmi/spi/OutboundResponse;(Unknown Source)
at weblogic.rmi.internal.BasicServerRef.invoke(Lweblogic/rmi/extensions/server/RuntimeMethodDescriptor;Lweblogic
/rmi/spi/InboundRequest;Lweblogic/rmi/spi/OutboundResponse;)V(BasicServerRef.java:492)
Please help .
Thanks in Advance.
Edited by hforever at 03/04/2008 7:28 AM -
Problem with creating Connection pool and JNDI, driver is not detected
Hi,
I have an issue with creating Connection Pool and JNDI.
I'm using:
- JDK 1.6
- OS: Linux(ubuntu 8.10)
- Netbeans IDE 6.5.1
- Java EE 5.0
- Apache Tomcat 6.0.18 Its lib directory contains all necessary jar files for Oracle database driver
- Oracle 11g Enterprise
My problem is that the Oracle database driver is not detected when I want to create a pool (it works pretty well and is detected without any problem when I create ordinary connection by DriverManager)
Therefore after running:
InitialContext ic = new InitialContext();
Context context = (Context)ic.lookup("java:comp/env");
DataSource dataSource = (DataSource)context.lookup("jdbc/oracle11g");
Connection connection = dataSource.getConnection();and right after dataSource.getConnection() I have the following exception:
org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot load JDBC driver class 'oracle.jdbc.OracleDriver'
at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1136)
at org.apache.tomcat.dbcp.dbcp.BasicDataSource.getConnection(BasicDataSource.java:880)
at servlets.Servlet1.doPost(Servlet1.java:47)
at servlets.Servlet1.doGet(Servlet1.java:29)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.ClassNotFoundException: oracle.jdbc.OracleDriver
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at sun.misc.Launcher$ExtClassLoader.findClass(Launcher.java:229)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:169)
at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1130)
... 17 more
My application context file (context.xml) is:
<?xml version="1.0" encoding="UTF-8"?>
<Context path="/WebApplication3">
<Resource auth="Container"
driverClassName="oracle.jdbc.OracleDriver"
maxActive="8"
maxIdle="4"
name="jdbc/oracle11g"
username="scott"
password="tiger"
type="javax.sql.DataSource"
url="jdbc:oracle:thin:@localhost:1521:database01" />
</Context>and my web.xml is:
<resource-ref>
<description>Oracle Datasource example</description>
<res-ref-name>jdbc/oracle11g</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
...I found similar threads in different forums including sun, such as
http://forums.sun.com/thread.jspa?threadID=567630&start=0&tstart=0
http://forums.sun.com/thread.jspa?threadID=639243&tstart=0
http://forums.sun.com/thread.jspa?threadID=5312178&tstart=0
, but no solution.
As many suggest, I also tried to put context directly in the server.xml (instead of my application context) and referencing it by <ResourceLink /> inside my application context but it didn't work and instead it gave me the following message:
org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class ' ' for connect URL 'null'
Has anyone succeeded in creating a connection pool with JNDI by using Tomcat 6 or higher ? If yes, could kindly explain about the applied method.
Regards,Hello again,
Finally I managed to run my application also with Tomcat 6.0.18. There was only two lines that had to be modified
in the context.xml file (the context of my application project and not server's)
Instead of writing
<Context antiJARLocking="true" path="/WebApplication2">
type="javax.sql.DataSource"
factory="org.apache.tomcat.dbcp.dbcp.BasicDataSourceFactory"
</Context>we had to write:
<Context antiJARLocking="true" path="/WebApplication2">
type="oracle.jdbc.pool.OracleDataSource"
factory="oracle.jdbc.pool.OracleDataSourceFactory"
</Context>- No modification was needed to be done at server level (niether server.xml nor server context.xml)
- I just added the ojdbc6.jar in $CATALINA_HOME/lib (I didn't even need to add it in WEB-INF/lib of my project)
- The servlet used to do the test was the same that I presented in my precedent post.
For those who have encountered my problem and are interested in the format of the web.xml and context.xml
with Tomcat 6.0, you can find them below:
Oracle server: Oracle 11g Enterprise
Tomcat server version: 6.0.18
Oracle driver: ojdbc.jar
IDE: Netbeans 6.5.1
The context.xml file of the web application
<?xml version="1.0" encoding="UTF-8"?>
<Context antiJARLocking="true" path="/WebApplication2">
<Resource name="jdbc/oracle11g"
type="oracle.jdbc.pool.OracleDataSource"
factory="oracle.jdbc.pool.OracleDataSourceFactory"
url="jdbc:oracle:thin:@localhost:1521:database01"
driverClassName="oracle.jdbc.OracleDriver"
userName="scott"
password="tiger"
auth="Container"
maxActive="100"
maxIdle="30"
maxWait="10000"
logAbandoned="true"
removeAbandoned="true"
removeAbandonedTimeout="60" />
</Context>The web.xml of my web application
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<resource-ref>
<description>Oracle Database 11g DataSource</description>
<res-type>oracle.jdbc.pool.OracleDataSource</res-type>
<res-auth>Container</res-auth>
<res-ref-name>jdbc/oracle11g</res-ref-name>
</resource-ref>
<servlet>
<servlet-name>Servlet1</servlet-name>
<servlet-class>servlets.Servlet1</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Servlet1</servlet-name>
<url-pattern>/Servlet1</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>
30
</session-timeout>
</session-config>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>Ok, now I'm happy as the original problem is completely solved
Regards -
My problem in using weblogic Datasource and proxy user
Hello
I create a DataSource in Weblogic that connect to the database by a proxy user and I have a client application that use this DataSource and create a proxy session , I've written my client application (it's a stand alone client application) code below :
public static void main(String [] args) {
OracleConnection conn=null;
javax.sql.DataSource ds=null;
Hashtable env = new Hashtable();
env.put( Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory" );
env.put(Context.PROVIDER_URL, "t3://127.0.0.1:7001");
try{
Context context=new InitialContext( env );
ds=(javax.sql.DataSource) context.lookup ("OracleConnection2");
conn=(OracleConnection) ds.getConnection();
java.util.Properties prop = new java.util.Properties();
prop.put(OracleConnection.PROXY_USER_NAME, "web_user1");
prop.put(OracleConnection.PROXY_USER_PASSWORD,"web_user1");
conn.openProxySession(OracleConnection.PROXYTYPE_USER_NAME, prop);
if (conn.isClosed()){
System.out.println("Connection closed");
return;
testJDBC(conn,true);
for(int k=0;k<10;k++){
testJDBC(conn,false);
conn.close(OracleConnection.PROXY_SESSION);
conn.close();
}catch(Exception ex){
ex.printStackTrace();
It works but my problem is that in line "prop.put(OracleConnection.PROXY_USER_PASSWORD,"web_user1")" or line "prop.put(OracleConnection.PROXY_USER_NAME, "web_user1");"
Let me to mention a scenario :
*1- I type a wrong username or password in my client application and I run the client application it shows me this error : invalid username/password*
*this error is acceptable*
*2- then I correct the wrong username or password immediately and run the application again , it shows me this error (at line conn.openProxySession(OracleConnection.PROXYTYPE_USER_NAME, prop)) :*
java.sql.SQLException: Closed Connection
at weblogic.rjvm.ResponseImpl.unmarshalReturn(ResponseImpl.java:234)
at weblogic.rmi.internal.BasicRemoteRef.invoke(BasicRemoteRef.java:223)
at weblogic.jdbc.rmi.internal.ConnectionImpl_weblogic_jdbc_wrapper_JTAConnection_weblogic_jdbc_wrapper_XAConnection_oracle_jdbc_driver_LogicalConnection_1032_WLStub.openProxySession(Unknown Source)
at weblogic.jdbc.rmi.SerialConnection_weblogic_jdbc_rmi_internal_ConnectionImpl_weblogic_jdbc_wrapper_JTAConnection_weblogic_jdbc_wrapper_XAConnection_oracle_jdbc_driver_LogicalConnection_1032_WLStub.openProxySession(Unknown Source)
at oracle.HRFacadeClient.main(HRFacadeClient.java:38)
*3- I run the application again (by correct username and password) but this time it shows me this error :*
java.sql.SQLException: Unsupported feature
at weblogic.rjvm.ResponseImpl.unmarshalReturn(ResponseImpl.java:234)
at weblogic.rmi.internal.BasicRemoteRef.invoke(BasicRemoteRef.java:223)
at weblogic.jdbc.rmi.internal.ConnectionImpl_weblogic_jdbc_wrapper_JTAConnection_weblogic_jdbc_wrapper_XAConnection_oracle_jdbc_driver_LogicalConnection_1032_WLStub.openProxySession(Unknown Source)
at weblogic.jdbc.rmi.SerialConnection_weblogic_jdbc_rmi_internal_ConnectionImpl_weblogic_jdbc_wrapper_JTAConnection_weblogic_jdbc_wrapper_XAConnection_oracle_jdbc_driver_LogicalConnection_1032_WLStub.openProxySession(Unknown Source)
at oracle.HRFacadeClient.main(HRFacadeClient.java:38)
*4 - if I repeat running the application for multi times every time it shows me the previous error*
*5- I wait about one minute the problem solved and my application can create proxy session *
the result is that if I wanna create proxy session by wrong username or password and I get "Invalid username/password" error message , then after correcting username or password I have to wait about one minute and then run the application again_
Do you know how I can overcome this problem ?
Thank youHi Jamshid,
There is same problem observed few days back with us, and we have used the below code, and it got solved. Actually there is a problem observed while using proxy connections on weblogic.
if(conn instanceof weblogic.jdbc.extensions.WLConnection){
weblogic.jdbc.extensions.WLConnection cn=(weblogic.jdbc.extensions.WLConnection)conn;
cn.clearStatementCache();
http://rocksolutions.wordpress.com/2010/06/04/connection-pool-issue-on-weblogic/
Hope this helps.
Thanks -
DataSource and ConnectionPoolDataSource
Could someone explain how to bind a DataSource with JNDI so that it is pooled? The only way I can get it to work is to bind an OracleConnectionPoolDataSource and then lookup a ConnectionPoolDataSource and get the PooledConnection from that. The documentation says that a client should be able to use the pooled DataSource the same way as a non-pooled one. But, in my scenario the client has to get a PooledConnection then get a Connection from that.
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Brad Lane ([email protected]):
Could someone explain how to bind a DataSource with JNDI so that it is pooled? The only way I can get it to work is to bind an OracleConnectionPoolDataSource and then lookup a ConnectionPoolDataSource and get the PooledConnection from that. The documentation says that a client should be able to use the pooled DataSource the same way as a non-pooled one. But, in my scenario the client has to get a PooledConnection then get a Connection from that.<HR></BLOCKQUOTE>
Sun's documentation says that you should be able to create a DataSource and call setDataSourceName() with the ConnectionPoolDataSource name. This doesn't seem to be supported in Oracle's implementation. Is this true? If so, Oracle's driver DOES NOT fully support the JDBC 2.0 Optional Package as they state in the documentation.
Hello JDBC Dev. Team? Anyone out there?
null -
Datasource via JNDI vs Driver Manager
I am really desperate to use Datasource for connectivity to Oracle (rather than using the driver manager) in my little J2EE app (no EJB) on IBM WSAD 5.0.
I have some example using DB2 datasource via JNDI.
I replaced the properties with my Oracle database parameters.
as below
userid=scott
password=tiger
url=jdbc:oracle:thin:@localhost:1521:library
driver=oracle.jdbc.OracleDriver
lookupName=jdbc/library
database=library
There is an object "DB2DataSource" coming from package COM.ibm.db2.jdbc.DB2DataSource in the example code "CreateDatasource.java" I am using to create the data source.
I have added JNDI.jar(from oracle), Naming.jar(from WSAD home), nasmingClient.jar(from WSAD home) in to the project.
By looking at Oracle manual we need import com.evermind.sql.DriverManagerDataSource; and
com.evermind.server to get initialContext.
But compiler cant find them.
Can anyone tell me what is the equivalent in Oracle?
Thanks
MeiHold on.
This is what I think. There will be others here who might be able to build to this and provide you the solution.
All that you need to do is
1. Add the Oracle driver to the WebSphere classpath.
2. Use the Admin Console / WSAD screens to create a JDBC Driver for the Oracle Driver.
3. Create a datasource within this driver. There is step-by-step documentation on how to do this.
4. Specify a JNDI name for the datasource.
5. Lookup the DataSource and cast it to a DataSource object.
6. Call getConnection method to get a connection.
Your coding portion is only steps 5 and 6 above.
Steps 1 through 4 needs to happen in the Admin Console / WSAD tool. I have done it in both the places before and it is a fairly straightforward process. You do not need any of the jars that you are mentioning below or need to do anything special.
Vijay -
Problem in datasource and connection factory.
I am using a connection factory to make connections to the database.
First I create a connection pool then i created a datasource and finally i used the JNDI Location name which i used inside the BPEL to create a connection factory.
Does this activity requires a restart of server. I am getting the following error.
file:/software/product/10.1.3.3.0/bpel/domains/default/tmp/.bpel_IRobo_Workflow1_1.0_e580208857197172fe72bbfca5d9d8b6.tmp/fr_jumper_info.wsdl [ fr_jumper_info_ptt::fr_jumper_info(InputParameters) ] - WSIF JCA Execute of operation 'fr_jumper_info' failed due to: Could not create/access the TopLink Session.
This session is used to connect to the datastore. [Caused by: VDMT_IROBO_DATASOURCE not found]
; nested exception is:
ORABPEL-11622
Could not create/access the TopLink Session.
This session is used to connect to the datastore. [Caused by: VDMT_IROBO_DATASOURCE not found]
See root exception for the specific exception. You may need to configure the connection settings in the deployment descriptor (i.e. $J2EE_HOME/application-deployments/default/DbAdapter/oc4j-ra.xml) and restart the server. Caused by Exception [TOPLINK-7060] (Oracle TopLink - 10g Release 3 (10.1.3.3.0) (Build 070608)): oracle.toplink.exceptions.ValidationException
Exception Description: Cannot acquire data source [VDMT_IROBO_DATASOURCE].
Internal Exception: javax.naming.NameNotFoundException: VDMT_IROBO_DATASOURCE not found.
</summary>
</part>
-<part name="detail">
<detail>
Exception Description: Cannot acquire data source [VDMT_IROBO_DATASOURCE].
Internal Exception: javax.naming.NameNotFoundException: VDMT_IROBO_DATASOURCE not found
</detailException Description: Cannot acquire data source [VDMT_IROBO_DATASOURCE].
Internal Exception: javax.naming.NameNotFoundException: VDMT_IROBO_DATASOURCE not found
</detailHi James
I have created the data source and i can find it in the path C:\product\10.1.3.1\OracleAS_1\j2ee\home\config\data-sources.xml
<managed-data-source connection-pool-name="IRoboConnectionPool" jndi-name="jdbc/VDMT_IROBO_DATASOURCE" name="VDMT_IROBO_DATASOURCE"/>
And in C:\product\10.1.3.1\OracleAS_1\j2ee\home\application-deployments\default\DbAdapter\oc4j-ra.xml i can see
<connector-factory location="eis/DB/VDMT_IROBO" connector-name="Database Adapter">
<config-property name="xADataSourceName" value="jdbc/VDMT_IROBO_DATASOURCE"/>
<config-property name="dataSourceName" value="VDMT_IROBO_DATASOURCE"/>
<config-property name="platformClassName" value="oracle.toplink.platform.database.Oracle9Platform"/>
<config-property name="usesNativeSequencing" value="true"/>
<config-property name="sequencePreallocationSize" value="50"/>
<config-property name="defaultNChar" value="false"/>
<config-property name="usesBatchWriting" value="true"/>
<connection-pooling use="none">
</connection-pooling>
<security-config use="none">
</security-config>
</connector-factory>
You have said I have given the name for dataSourceName incorrectly , what value should we give I dont know that I thought it is a user defined value. -
Difference between Datasource and Connection Pool
Hi,
What is the major difference between Datasource and Connection Pool.
Both the Datasource with JNDI and Connectio Pool will serve the pool of connections. Then what is the difference.
regards,
RajA datasource is not implicitly a connection pool. You can configure that in the datasource properties. A connection pool is also not implicitly a datasource. You can create your own connection pool using the java.sql interfaces. A datasource just gives the ability to acquire the connections and access the database through JNDI. A connection pool just gives the ability to reuse a set of connections which are created/closed/controlled by the connection pool logic.
-
Problem with OpenLDAP and JNDI
I'm having problem working with OpenLDAP and JNDI.
First I have changed LDAP's slapd.conf file:
suffix "dc=antipodes,dc=com"
rootdn cn=Manager,dc=antipodes,dc=com
directory "C:/Program Files/OpenLDAP/data"
rootpw secret
schemacheck offthan i used code below, to create root context:
package test;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.naming.NameAlreadyBoundException;
import javax.naming.directory.*;
import java.util.*;
public class MakeRoot {
final static String ldapServerName = "localhost";
final static String rootdn = "cn=Manager,dc=antipodes,dc=com";
final static String rootpass = "secret";
final static String rootContext = "dc=antipodes,dc=com";
public static void main( String[] args ) {
// set up environment to access the server
Properties env = new Properties();
env.put( Context.INITIAL_CONTEXT_FACTORY,
"com.sun.jndi.ldap.LdapCtxFactory" );
env.put( Context.PROVIDER_URL, "ldap://" + ldapServerName + "/" );
env.put( Context.SECURITY_PRINCIPAL, rootdn );
env.put( Context.SECURITY_CREDENTIALS, rootpass );
try {
// obtain initial directory context using the environment
DirContext ctx = new InitialDirContext( env );
// now, create the root context, which is just a subcontext
// of this initial directory context.
ctx.createSubcontext( rootContext );
} catch ( NameAlreadyBoundException nabe ) {
System.err.println( rootContext + " has already been bound!" );
} catch ( Exception e ) {
System.err.println( e );
}this worked fine, I could see that by using "LDAP Browser/Editor".
and then I tried to create group with code:
package test;
import java.util.Hashtable;
import javax.naming.*;
import javax.naming.ldap.*;
import javax.naming.directory.*;
public class MakeGroup
public static void main (String[] args)
Hashtable env = new Hashtable();
String adminName = "cn=Manager,dc=antipodes,dc=com";
String adminPassword = "secret";
String ldapURL = "ldap://127.0.0.1:389";
String groupName = "CN=Evolution,OU=Research,DC=antipodes,DC=com";
env.put(Context.INITIAL_CONTEXT_FACTORY,"com.sun.jndi.ldap.LdapCtxFactory");
//set security credentials, note using simple cleartext authentication
env.put(Context.SECURITY_AUTHENTICATION,"simple");
env.put(Context.SECURITY_PRINCIPAL,adminName);
env.put(Context.SECURITY_CREDENTIALS,adminPassword);
//connect to my domain controller
env.put(Context.PROVIDER_URL,ldapURL);
try {
// Create the initial directory context
LdapContext ctx = new InitialLdapContext(env,null);
// Create attributes to be associated with the new group
Attributes attrs = new BasicAttributes(true);
attrs.put("objectClass","group");
attrs.put("samAccountName","Evolution");
attrs.put("cn","Evolution");
attrs.put("description","Evolutionary Theorists");
//group types from IAds.h
int ADS_GROUP_TYPE_GLOBAL_GROUP = 0x0002;
int ADS_GROUP_TYPE_DOMAIN_LOCAL_GROUP = 0x0004;
int ADS_GROUP_TYPE_LOCAL_GROUP = 0x0004;
int ADS_GROUP_TYPE_UNIVERSAL_GROUP = 0x0008;
int ADS_GROUP_TYPE_SECURITY_ENABLED = 0x80000000;
attrs.put("groupType",Integer.toString(ADS_GROUP_TYPE_UNIVERSAL_GROUP + ADS_GROUP_TYPE_SECURITY_ENABLED));
// Create the context
Context result = ctx.createSubcontext(groupName, attrs);
System.out.println("Created group: " + groupName);
ctx.close();
catch (NamingException e) {
System.err.println("Problem creating group: " + e);
}got the error code: Problem creating group: javax.naming.directory.InvalidAttributeIdentifierException: [LDAP: error code 17 - groupType: attribute type undefined]; remaining name 'CN=Evolution,OU=Research,DC=antipodes,DC=com'
I tried by creating organizational unit "ou=Research" from "LDAP Browser/Editor", and then running the same code -> same error.
also I have tried code for adding users:
package test;
import java.util.Hashtable;
import javax.naming.ldap.*;
import javax.naming.directory.*;
import javax.naming.*;
import javax.net.ssl.*;
import java.io.*;
public class MakeUser
public static void main (String[] args)
Hashtable env = new Hashtable();
String adminName = "cn=Manager,dc=antipodes,dc=com";
String adminPassword = "secret";
String userName = "cn=Albert Einstein,ou=Research,dc=antipodes,dc=com";
String groupName = "cn=All Research,ou=Research,dc=antipodes,dc=com";
env.put(Context.INITIAL_CONTEXT_FACTORY,"com.sun.jndi.ldap.LdapCtxFactory");
//set security credentials, note using simple cleartext authentication
env.put(Context.SECURITY_AUTHENTICATION,"simple");
env.put(Context.SECURITY_PRINCIPAL,adminName);
env.put(Context.SECURITY_CREDENTIALS,adminPassword);
//connect to my domain controller
env.put(Context.PROVIDER_URL, "ldap://127.0.0.1:389");
try {
// Create the initial directory context
LdapContext ctx = new InitialLdapContext(env,null);
// Create attributes to be associated with the new user
Attributes attrs = new BasicAttributes(true);
//These are the mandatory attributes for a user object
//Note that Win2K3 will automagically create a random
//samAccountName if it is not present. (Win2K does not)
attrs.put("objectClass","user");
attrs.put("samAccountName","AlbertE");
attrs.put("cn","Albert Einstein");
//These are some optional (but useful) attributes
attrs.put("giveName","Albert");
attrs.put("sn","Einstein");
attrs.put("displayName","Albert Einstein");
attrs.put("description","Research Scientist");
attrs.put("userPrincipalName","[email protected]");
attrs.put("mail","[email protected]");
attrs.put("telephoneNumber","999 123 4567");
//some useful constants from lmaccess.h
int UF_ACCOUNTDISABLE = 0x0002;
int UF_PASSWD_NOTREQD = 0x0020;
int UF_PASSWD_CANT_CHANGE = 0x0040;
int UF_NORMAL_ACCOUNT = 0x0200;
int UF_DONT_EXPIRE_PASSWD = 0x10000;
int UF_PASSWORD_EXPIRED = 0x800000;
//Note that you need to create the user object before you can
//set the password. Therefore as the user is created with no
//password, user AccountControl must be set to the following
//otherwise the Win2K3 password filter will return error 53
//unwilling to perform.
attrs.put("userAccountControl",Integer.toString(UF_NORMAL_ACCOUNT + UF_PASSWD_NOTREQD + UF_PASSWORD_EXPIRED+ UF_ACCOUNTDISABLE));
// Create the context
Context result = ctx.createSubcontext(userName, attrs);
System.out.println("Created disabled account for: " + userName);
//now that we've created the user object, we can set the
//password and change the userAccountControl
//and because password can only be set using SSL/TLS
//lets use StartTLS
StartTlsResponse tls = (StartTlsResponse)ctx.extendedOperation(new StartTlsRequest());
tls.negotiate();
//set password is a ldap modfy operation
//and we'll update the userAccountControl
//enabling the acount and force the user to update ther password
//the first time they login
ModificationItem[] mods = new ModificationItem[2];
//Replace the "unicdodePwd" attribute with a new value
//Password must be both Unicode and a quoted string
String newQuotedPassword = "\"Password2000\"";
byte[] newUnicodePassword = newQuotedPassword.getBytes("UTF-16LE");
mods[0] = new ModificationItem(DirContext.REPLACE_ATTRIBUTE, new BasicAttribute("unicodePwd", newUnicodePassword));
mods[1] = new ModificationItem(DirContext.REPLACE_ATTRIBUTE, new BasicAttribute("userAccountControl",Integer.toString(UF_NORMAL_ACCOUNT + UF_PASSWORD_EXPIRED)));
// Perform the update
ctx.modifyAttributes(userName, mods);
System.out.println("Set password & updated userccountControl");
//now add the user to a group.
try {
ModificationItem member[] = new ModificationItem[1];
member[0]= new ModificationItem(DirContext.ADD_ATTRIBUTE, new BasicAttribute("member", userName));
ctx.modifyAttributes(groupName,member);
System.out.println("Added user to group: " + groupName);
catch (NamingException e) {
System.err.println("Problem adding user to group: " + e);
//Could have put tls.close() prior to the group modification
//but it seems to screw up the connection or context ?
tls.close();
ctx.close();
System.out.println("Successfully created User: " + userName);
catch (NamingException e) {
System.err.println("Problem creating object: " + e);
catch (IOException e) {
System.err.println("Problem creating object: " + e); }
}same error.
I haven't done any chages to any schema manually.
I know I'm missing something crucial but have no idea what. I have tried many other code from tutorials from net, but they are all very similar and throwing the same error I showed above.
thanks in advance for help.I've solved this.
The problem was that all codes were using classes from Microsoft Active Directory, and they are not supported in OpenLDAP (microsoft.schema in OpenLDAP is just for info). Due to this some fields are not the same in equivalent classes ("user" and "person").
so partial code for creating user in root would be:
import java.util.Hashtable;
import javax.naming.ldap.*;
import javax.naming.directory.*;
import javax.naming.*;
import javax.net.ssl.*;
import java.io.*;
public class MakeUser
public static void main (String[] args)
Hashtable env = new Hashtable();
String adminName = "cn=Manager,dc=antipodes,dc=com";
String adminPassword = "secret";
String userName = "cn=Albert Einstein,ou=newgroup,dc=antipodes,dc=com";
env.put(Context.INITIAL_CONTEXT_FACTORY,"com.sun.jndi.ldap.LdapCtxFactory");
//set security credentials, note using simple cleartext authentication
env.put(Context.SECURITY_AUTHENTICATION,"simple");
env.put(Context.SECURITY_PRINCIPAL,adminName);
env.put(Context.SECURITY_CREDENTIALS,adminPassword);
//connect to my domain controller
env.put(Context.PROVIDER_URL, "ldap://127.0.0.1:389");
try {
// Create the initial directory context
LdapContext ctx = new InitialLdapContext(env,null);
// Create attributes to be associated with the new user
Attributes attrs = new BasicAttributes(true);
attrs.put("objectClass","user");
attrs.put("cn","Albert Einstein");
attrs.put("userPassword","Nale");
attrs.put("sn","Einstein");
attrs.put("description","Research Scientist");
attrs.put("telephoneNumber","999 123 4567");
// Create the context
Context result = ctx.createSubcontext(userName, attrs);
System.out.println("Successfully created User: " + userName);
catch (NamingException e) {
System.err.println("Problem creating object: " + e);
}hope this will help anyone. -
How to use DataSource and External transaction in 9ias?
I'm working on a project that the application server needs to connect to over 100 databases.
I'd like to use connection pooling and external transaction service defined in OC4J's Datasources.
I wonder if anyone has an example of using datasource and external transaction service for OC4J.
Right now, I export toplink project to a java source and do the initialization there manually but I don't know how to use Datasource to get connections and how to use the external transaction service in the java code for OC4J.
I really appreciate you help.
WeiHere is a fill in the blank example on how you could set this up through code:
Project project = new MyProject();
// alternatively, use the XMLProjectReader
server = project.createServerSession();
server.getLogin().useExternalConnectionPooling();
server.getLogin().setConnector(new JNDIConnector(new javax.naming.InitialContext(), "jdbc/DataSourceName"));
// the next line depends on the type of driver you want to use.
server.getLogin().useOracleThinJDBCDriver();
server.getLogin().useOracle();
server.getLogin().setUserName("username");
server.getLogin().setPassword("password");
server.getLogin().useExternalTransactionController();
server.setExternalTransactionController(new Oracle9iJTSExternalTransactionController());
server.logMessages();
server.login(); -
Compare creation of Datasources and JMS Queues : SAP vs (Weblogic/Websphere
I am used to creating JDBC Datasources and JMS Queues on Weblogic/Websphere thru their Admin applications.
Can someone compare/contrast that process to that on SAP's netweaver ( either using NWA or Visual Administrator).
ThanksHi Parag,
For the process of creating JDBC datasources and JMS resources @ SAP NetWeaver you can refer to the documents here on SDN and help.sap.com, and compare that process for yourself, thus not being influenced by others' biased or unbiased opinions.
For NetWeaver 04 and 04s these would be:
<a href="http://help.sap.com/saphelp_nw04/helpdata/en/b0/6e62f30cbe9e44977c78dbdc7a6b27/frameset.htm">JDBC Connector Service</a>
<a href="http://help.sap.com/saphelp_nw04/helpdata/en/22/cf4e71c46cdb4da31153be96c5389f/frameset.htm">JMS Connector Service</a>
For the <a href="https://www.sdn.sap.comhttp://www.sdn.sap.comhttp://www.sdn.sap.com/irj/sdn/javaee5">Java EE 5 Edition</a>:
<a href="https://www.sdn.sap.comhttp://www.sdn.sap.comhttp://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/7bb9751d-0e01-0010-febd-c3adce2c408c">Working with Database Tables, DataSources and JMS Resources</a>
<a href="https://www.sdn.sap.comhttp://www.sdn.sap.comhttp://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/806e75a0-0e01-0010-2587-fc518de8ac1a">Administration Guide</a> -> section "Application Resources Management" (pages 89-104)
Hope that helps!
Your feedback/findings are very welcome!
-Vladimir -
What are the settings for datasource and infopackage for flat file loading
hI
Im trying to load the data from flat file to DSO . can anyone tel me what are the settings for datasource and infopackage for flat file loading .
pls let me know
regards
kumarLoading of transaction data in BI 7.0:step by step guide on how to load data from a flatfile into the BI 7 system
Uploading of Transaction data
Log on to your SAP
Transaction code RSA1LEAD YOU TO MODELLING
1. Creation of Info Objects
In left panel select info object
Create info area
Create info object catalog ( characteristics & Key figures ) by right clicking the created info area
Create new characteristics and key figures under respective catalogs according to the project requirement
Create required info objects and Activate.
2. Creation of Data Source
In the left panel select data sources
Create application component(AC)
Right click AC and create datasource
Specify data source name, source system, and data type ( Transaction data )
In general tab give short, medium, and long description.
In extraction tab specify file path, header rows to be ignored, data format(csv) and data separator( , )
In proposal tab load example data and verify it.
In field tab you can you can give the technical name of info objects in the template and you not have to map during the transformation the server will automatically map accordingly. If you are not mapping in this field tab you have to manually map during the transformation in Info providers.
Activate data source and read preview data under preview tab.
Create info package by right clicking data source and in schedule tab click star to load data to PSA.( make sure to close the flat file during loading )
3. Creation of data targets
In left panel select info provider
Select created info area and right click to create ODS( Data store object ) or Cube.
Specify name fro the ODS or cube and click create
From the template window select the required characteristics and key figures and drag and drop it into the DATA FIELD and KEY FIELDS
Click Activate.
Right click on ODS or Cube and select create transformation.
In source of transformation , select object type( data source) and specify its name and source system Note: Source system will be a temporary folder or package into which data is getting stored
Activate created transformation
Create Data transfer process (DTP) by right clicking the master data attributes
In extraction tab specify extraction mode ( full)
In update tab specify error handling ( request green)
Activate DTP and in execute tab click execute button to load data in data targets.
4. Monitor
Right Click data targets and select manage and in contents tab select contents to view the loaded data. There are two tables in ODS new table and active table to load data from new table to active table you have to activate after selecting the loaded data . Alternatively monitor icon can be used.
Loading of master data in BI 7.0:
For Uploading of master data in BI 7.0
Log on to your SAP
Transaction code RSA1LEAD YOU TO MODELLING
1. Creation of Info Objects
In left panel select info object
Create info area
Create info object catalog ( characteristics & Key figures ) by right clicking the created info area
Create new characteristics and key figures under respective catalogs according to the project requirement
Create required info objects and Activate.
2. Creation of Data Source
In the left panel select data sources
Create application component(AC)
Right click AC and create datasource
Specify data source name, source system, and data type ( master data attributes, text, hierarchies)
In general tab give short, medium, and long description.
In extraction tab specify file path, header rows to be ignored, data format(csv) and data separator( , )
In proposal tab load example data and verify it.
In field tab you can you can give the technical name of info objects in the template and you not have to map during the transformation the server will automatically map accordingly. If you are not mapping in this field tab you have to manually map during the transformation in Info providers.
Activate data source and read preview data under preview tab.
Create info package by right clicking data source and in schedule tab click star to load data to PSA.( make sure to close the flat file during loading )
3. Creation of data targets
In left panel select info provider
Select created info area and right click to select Insert Characteristics as info provider
Select required info object ( Ex : Employee ID)
Under that info object select attributes
Right click on attributes and select create transformation.
In source of transformation , select object type( data source) and specify its name and source system Note: Source system will be a temporary folder or package into which data is getting stored
Activate created transformation
Create Data transfer process (DTP) by right clicking the master data attributes
In extraction tab specify extraction mode ( full)
In update tab specify error handling ( request green)
Activate DTP and in execute tab click execute button to load data in data targets. -
DataSource and PreparedStatement
I am using DataSource and PreparedStatement in weblogic8.1 for a J2EE application.
It works if we use only EJB..but if we use enterprise app. i.e. servlets,jsp,ejb etc.. it does not work.
Can somebody tell the reason behind it??Why do you feel this is an issue with the PreparedStatements and not just the DataSource? Are you sure you have configured the DataSource correctly for your platforms outside your ejb container?
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