Use of JNDI compare to JDBC

Hai All,
I face the question is what is main advantage of jndi,but i know without creating the object we will reuse the objects.if we use the jndi we have lose some memory so wht the main adventage of jndi?
thanks in advance

Hi.
I am very sorry, but I do not seem to get your point. To me, JNDI and JDBC cannot really be compared?
Bye.
Edited by: swmtgoet_x on Sep 12, 2008 1:45 PM

Similar Messages

How to get comparable Oracle JDBC performance using Java 1.4 vs 1.1.7?

Our application makes extensive use of JDBC to access an Oracle database. We wrote it a number of years ago using java 1.1.7 and we have been unable to move to new versions of java because of the performance degradation.
I traced the problem to JDBC calls. I can reproduce the problem using a simple program that simply connects to the database, executes a simple query and then reads the data. The same program running under java 1.4 is about 60% slower than under java 1.1.7. The query is about 80% slower and getting the data is about 150% slower!
The program is attached below. Note, I run the steps twice as the first time the times are much larger which I attribute to java doing some initializations. So the second set of values I think are more representative of the actual performance in our application where there are numerous accesses to the database. Specifically, I focus on step 4 which is the execute query command and step 5 which is the data retrieval step. The table being read has 4 columns with 170 tuples in it.
Here are the timings I get when I run this on a Sparc Ultra 5 running
SunOs 5.8 using an Oracle database running 8.1.7:
                 java 1.1.7 java 1.4
        overall:    2.1s         3.5s
        step 1:     30           200
        step 2:    886          2009
        step 3:      2             2
        step 4:      9            17
        step 5:    122           187
        step 6:      1             1
        step 1:      0             0
        step 2:    203           161
        step 3:      0             1
        step 4:      8            15   <-   87% slower
        step 5:     48           117   <- 143% slower
        step 6:      1             2I find the same poor performance from java versions 1.2 and 1.3.
I tried using DataDirect's type 4 JDBC driver which gives a little better performance but overall it is still much slower than using java 1.1.7.
Why do the newer versions of java have such poor performance when using JDBC?
What can be done so that we can have performance similar to java 1.1.7
using java 1.4?
========================================================================
import java.util.*;
import java.io.*;
import java.sql.*;
public class test12 {
    public static void main(String args[]) {
        try {
                long time1 = System.currentTimeMillis();
/* step 1 */ DriverManager.registerDriver(
                    new oracle.jdbc.driver.OracleDriver());
                long time2 = System.currentTimeMillis();
/* step 2 */ Connection conn = DriverManager.getConnection (
              "jdbc:oracle:thin:@dbserver1:1521:db1","user1","passwd1");
                long time3 = System.currentTimeMillis();
/* step 3 */ Statement stmt = conn.createStatement();
                long time4 = System.currentTimeMillis();
/* step 4 */ ResultSet rs = stmt.executeQuery("select * from table1");
                long time5 = System.currentTimeMillis();
/* step 5 */ while( rs.next() ) {
                  int message_num = rs.getInt(1);
                  String message = rs.getString(2);
                long time6 = System.currentTimeMillis();
/* step 6 */ rs.close(); stmt.close();
                long time7 = System.currentTimeMillis();
            System.out.println("step 1: " + (time2 - time1) );
            System.out.println("step 2: " + (time3 - time2) );
            System.out.println("step 3: " + (time4 - time3) );
            System.out.println("step 4: " + (time5 - time4) );
            System.out.println("step 5: " + (time6 - time5) );
            System.out.println("step 6: " + (time7 - time6) );
            System.out.flush();
        } catch ( Exception e ) {
            System.out.println( "got exception: " + e.getMessage() );
        ... repeat the same 6 steps again...
}

If I run my sample program with the -server option, it
takes a lot longer (6.8s vs 3.5s).Which has to be expected, as the -server option optimizes for long running programs - so it shoudl go with my second suggestion, more below...
I am not certain what you mean by "just let the jvm
running". Our users issue a command (in Unix) which
invokes one of our java programs to access or update
data in a database. I think what you are suggesting
would require that I rewrite our application to have a
java program always running on the users workstation
and to also rewrite our
commands (over a hundred) to some how pass data and
receive data with this new server java program. That
does not seem a very reasonable just to move to a new
version of java. Or are you suggesting something
else?No I was just suggestion what you descript. But if this is not an option, then maybe you should merge your java-programs to C or another native language. Or you could try the IBM-JDK with the -faststart (or similar) option. If thew Unix you mention is AIX, then there would be the option of a resetable-vm. But I cannot say if this VM would solve your problem. Java is definitly not good for applications which only issue some unqiue commands because the hotspot-compiler can not be efficiently used there. You can only try to get 1.1.7 performance by experimenting with vm-parameters (execute java -X).

How do I use a JNDI datasource in my application?

Not sure how to access the JNDI datasource i setup in my config.xml. I tried to browse it at rmi://localhost:1099/ but it only shows jmxrmi in the tree.
My config.xml looks like
<n1:config xsi:schemaLocation="http://www.bea.com/ns/wlevs/config/server wlevs_server_config.xsd" xmlns:n1="http://www.bea.com/ns/wlevs/config/server" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<netio>
    <name>NetIO</name>
    <port>9002</port>
</netio>
<work-manager>
    <name>JettyWorkManager</name>
    <min-threads-constraint>5</min-threads-constraint>
    <max-threads-constraint>10</max-threads-constraint>
</work-manager>
<jetty>
    <name>JettyServer</name>
    <network-io-name>NetIO</network-io-name>
    <work-manager-name>JettyWorkManager</work-manager-name>
</jetty>
<rmi>
    <name>RMI</name>
    <http-service-name>JettyServer</http-service-name>
</rmi>
<jndi-context>
    <name>JNDI</name>
</jndi-context>
<exported-jndi-context>
    <name>exportedJndi</name>
    <rmi-service-name>RMI</rmi-service-name>
</exported-jndi-context>
<jmx>
    <jndi-service-name>JNDI</jndi-service-name>
    <rmi-service-name>RMI</rmi-service-name>
    <rmi-registry-port>1099</rmi-registry-port>
    <rmi-jrmp-port>9999</rmi-jrmp-port>
</jmx>
<transaction-manager>
      <name>transactionmanager</name>
      
</transaction-manager>
<data-source>
      <name>hqsqlconn</name>
      <driver-params>
        <url>jdbc:hsqldb:hsql://localhost/wlevdb</url>
        <driver-name>org.hsqldb.jdbcDriver</driver-name>
        <properties>
          <element>
            <name>user</name>
            <value>sa</value>
          </element>
          <element>
            <name>password</name>
            <value></value>
          </element>
        </properties>
        <use-xa-data-source-interface>true</use-xa-data-source-interface>
      </driver-params>
      <connection-pool-params>
        <initial-capacity>1</initial-capacity>
        <max-capacity>5</max-capacity>
        <test-table-name>test_table</test-table-name>
      </connection-pool-params>
      <data-source-params>
        <jndi-names>
          <element>hqsqlconn</element>
        </jndi-names>
        <global-transactions-protocol>TwoPhaseCommit</global-transactions-protocol>
      </data-source-params>
</data-source>
</n1:config>

I see what you are saying.
The JNDI approach should work-we will try to reproduce this internally.
I would recommend leveraging the OSGi service registry, instead of using JNDI, however. The Event Server is a modular server based on OSGi, so one should use the OSGi service registry whenever possible instead of using the jndi registry. Jndi is primarily there to support legacy code that requires Jndi.
Any data sources that you configure are automatically registered in the OSGi service registry. When there is more than one data source they can be distinguished using their name.
There are a couple of options.
If you want to inject a reference to your datasource into a Spring bean, you can use an annotation, @Service, to annotate a setter method on your bean (see my previous post). The container will then inject a reference to the data source into the bean.
You can also put the following in your spring application context file
<osgi:reference id="myDataSource"
interface="javax.sql.DataSource"/>
This creates a bean proxy that references the datasource by looking up the datasource in the OSGi service registry. It works similarly to JndiObjectFactoryBean, but it uses the OSGi service registry instead of the JNDI registry. You can read more about it here
http://www.springframework.org/osgi/specification
(Look in section 3.3)
Hope that helps.
Seth
Edited by swhite at 08/01/2007 6:19 PM

Why use Datasource & JNDI

HI
I am novice to the JNDI. I searched a few documents but did not find a right anwser. my question is , why do we need DataSource through JNDI. I think we need it to connect diffreent kind of resources. but think of a situation where my JDBC connetionpooling class resides on same JVM that of my application. in this case do I need to use datasource & JNDI name then bind it to the class or I can use the class directly by passing JNDI.
which one will be better & why

Hi,
The nice thing about JNDI is that you can write your application in a way that is independent of the details needed to setup and connect (user, passwd, URL, drivername etc) to the database.
In a typical J2EE server, the setup is done by a human administrator, using the appserver tools. This administrator needs to have little or no knowledge about your application, simply because the setup and the usage of the drivers are cleanly separated through JNDI in the middle.
In turn, your application can be perfectly portable across different servers, different databases with different drivers and user accounts, and you don't need to change your code in order to do that (at least not in principle).
Even if your application runs in the same VM, there are some virtues to this separation.
Best,
Guy
http://www.atomikos.com - JTA, JNDI and DataSource support for J2SE, J2EE and Tomcat

How can I use the hardware compare feature of the 6551 card to trigger scripts

I can dynamically and seamlessly generate different waveforms by triggering different scriptTriggers that drive one or more of the 4 PFI lines. However, I need to evaluate a channel at a specific location or locations set by a script marker in real-time and generate a different waveform stored in on-board memory based on the result of the evaluation. I have attempted to use the hardware compare feature without any success. I am trying to dynamically respond to an I2C device based on the ACKs or NACK response of the device under test. Can the 6551 card accomplish this? Has anyone successfully tested an I2C or SMBus communication stream with 6551 card?

Hello,
I can understand why hardware compare did not work out for you application. Hardware compare uses a signal that was generated to make a digital pattern and then waits a few clock cycles before acquiring the signal that needs to be compared to the digital pattern.
I would look into using a script trigger to evaluate the channel value, where the script structure controls when it is evaluated. Please note that script triggers will need to be cleared after they are detected for reasserting. Some script syntax actually clear the script trigger and then use a wait until script trigger structure. Please refer to the HS DIO Help for documentation on Common Scripting Use Cases.
Please provide us with further details about your application. The more information, the better! I was not too clear on what you where wanting to evaluate and where is it coming from.
I would also like to mention that National Instruments has a NI USB 8451 which is capable of I2C communication.
NI USB 8451
Samantha
National Instruments
Applications Engineer

Insert data 32K into a column of type LONG using the oracle server side jdbc driver

Hi,
I need to insert data of more than 32k into a
column of type LONG.
I use the following code:
String s = "larger then 32K";
PreparedStatement pstmt = dbcon.prepareStatement(
"INSERT INTO TEST (LO) VALUES (?)");
pstmt.setCharacterStream(1, new StringReader(s), s.length());
pstmt.executeUpdate();
dbcon.commit();
If I use the "standard" oracle thin client driver from classes_12.zip ("jdbc:oracle:thin:@kn7:1521:kn7a") every thing is working fine. But if I use the oracle server side jdbc driver ("jdbc:default:connection:") I get the exception java.sql.SQLException:
Datasize larger then max. datasize for this type: oracle.jdbc.kprb.KprbDBStatement@50f4f46c
even if the string s exceeds a length of 32767 bytes.
I'm afraid it has something to do with the 32K limitation in PL/SQL but in fact we do not use any PL/SQL code in this case.
What can we do? Using LOB's is not an option because we have client software written in 3rd party 4gl language that is unable to handle LOB's.
Any idea would be appreciated.
Thomas Stiegler
null

In rdbms 8.1.7 "relnotes" folder, there is a "Readme_JDBC.txt" file (on win nt) stating
Known Problems/Limitations In This Release
<entries 1 through 3 omiited for brevity >
4. The Server-side Internal Driver has the following limitation:
- Data access for LONG and LONG RAW types is limited to 32K of
data.

Problem with creation of dbadapter in jdeveloper using only jndi

Hi,
I´m new in this forum and first would like thank for the opportunity.
My problem is that have an application where i need to create a dbadapter for to connect a database.
I´m using bpel.
Would like known if there is a way of to make this without creating a local dbconnection in my project. I´m want to use only jndi that is in my Aplication Server.
For example : At the moment of creation of dbadapter, the wizard give me a dbconnection and below the jndi, is not possible i to create this connector using only the JNDI?
Thanks.

Hi,
Try using Open Data Set file for output to load in to application server.
The GUI_DOWNLOAD only gets the data to the presentation server,.
I think you are expecting the file in AS running GUI_Download gets only to Presentation Server.
Thanks & Regards,
Vishnu

How to use a custom comparator in a TableSorter?

Hi,
I want to use a custom comparator for sorting a table by a specific column.
As you possibly know, the constructor for the TableSorter class looks like this:
TableSorter(IWDTable table, IWDAction sortAction, Map comparators);
As Map is an Interface I chose Hashmap as comparator container. So, I use the put(Key, Value) method to insert my own comparator into the Hashmap in order to deliver this Object to the TableSorter constructor.
But there is an essential problem:
I assume, that the column which is to be associated with my comparator is determined by the key of the Map object from the TableSorter constructor.
Presuming this, <u>what should the map key be/look like?</u>
An Integer counted from the columns? The column header as String? Whatever? Or am I on the wrong way?
PS:
Hours of search did not lead me to some kind of documentation or javadoc of the TableSorter class! This can't be, does someone have a link please?
Thanks a lot for any help.

(sorry Mrutyun, this did not help.)
Ok, I solved it; let me share it with you:
public class ExampleView
        public static void wdDoModifyView(IPrivateExampleView wdThis, IPrivateExampleView.IContextNode wdContext, com.sap.tc.webdynpro.progmodel.api.IWDView view, boolean firstTime)
                 * A custom Comparator class is used for sorting by Severity.
                 * An Object of it is delivered to an object of a Map class to be delivered to the TableSorter constructor.
                 * The Map class consists of key-value pairs, and the TableSorter must accept the Key of it
                 * because he uses it to assign the mapped Comparator to the column of the table to be sorted!
                 * And this is done with the ID of the Element, which shall be sorted with the Comparator, used as Map Key.
                 * All other columns of the assigned tables will be sorted by default Comparators.
                IWDTable table = (IWDTable) view.getElement("[TableName]");
                HashMap tableComps = new HashMap();
                tableComps.put(view.getElement("[ColumnName]").getId(), new MyComp(wdContext.currentExampleElement())); //The map key value I looked for is the ID of the Element of the Column!
                wdContext.current/*yourContextNode*/Element().setTableSort(
                        new TableSorter(table, wdThis.wdGetSortTableRowAction(),
                                tableComps)); //Insert HashMap with the new Comparator
        public void onActionSortTableRow(com.sap.tc.webdynpro.progmodel.api.IWDCustomEvent wdEvent )
        //@@begin onActionSortTableRow(ServerEvent)
                        wdContext.currentConfigurationElement().getTableSort().sort(wdEvent, wdContext.nodeOpenIncident());
        //@@end
As you see, the Column which is to be sorted by the custom Comparator "MyComp", is clearly assigned to it. Thus, is will only be used when sorting by this column is done.
The "inActionSort" method is as usual.
My Comparator sorts a column which contains variables of a "SimpleType" with an enumeration. (If you need help with this, feel free to write me.) To achieve this, the Comparator needs to know what this SimpleType consists of. That's why I deliver this Element per Constructor to it.
public class MyComp implements Comparator
     MappedNodeElement element;
     public SeverityComp(I/*one*/Element element)
          this.element = element;
     public SeverityComp(I/*another*/Element element)
          this.element = element;
     public int compare(Object severity1, Object severity2)
Because MappedNodeElement is such abstract, it can be used by several different Tables, provided they use the same SimpleType.
Concerning my quest for this resolution, I hope this is helpful.
null

Stored procedure by using EXECUTE at the sender JDBC

We have Scenario from JDBC to RFC (ASYNCH).We are using Oracle DB,at the database side we have a stored Procedure and inside the Procedure we are accessing multiple table.
My query is how can we excecute update sql statement a stored procedure by using EXECUTE at the sender JDBC?
EXECUTE SP_STUDENT_UPDATE
ERROR: 'java.sql.SQLException: ORA-00900: invalid SQL statement '. For details, contact your database server vendor.

Hi. Peter.
yes , is possible to update your rows in your sp.
If you want the data determined from the Query SQL Statement to remain in the database unchanged after being sent successfully, enter <TEST>.This is recommended if the data has not only been read, but also changed by a stored procedure entered under Query SQL Statement.
http://help.sap.com/saphelp_nw73/helpdata/en/7e/5df96381ec72468a00815dd80f8b63/content.htm?frameset=/en/48/465581929734d9e10000000a42189d/frameset.htm&current_toc=/en/ca/b977f1c7814201954f20bb87ad7aab/plain.htm&node_id=64
Could you put your sp? Maybe something is wrong .
Regards
Lucho

How to add or modify an entry using the JNDI

Hi all,
Usually I have used the netscape library to write directory application, now I have to use the JNDI ...
Could I have some examples about the add modify and delete entry on the directory?
Thanks a lot!
M@x

Download the LDAP Service provider at http://java.sun.com/products/jndi/index.html#download_ldap
It has some example code too

Changing user password in Active Directory using the JNDI GSS-API/Kerberos5

Hello,
I am trying to the JNDI GSS-API to change a user password on an Active Directory Server 2003. I have seen a variation of this using SSL on the thread [*http://forums.sun.com/thread.jspa?threadID=592611&start=0&tstart=0*|http://forums.sun.com/thread.jspa?threadID=592611&start=0&tstart=0]
but I can't seem to make this work using the GSS-API. I can successfully create a javax.security.auth.login.LoginContext.LoginContext and then call the login method on it to log in as a user. I then call the javax.security.auth.Subject.doAs() method which calls the run method in a class extending the javax.security.PrivilegedActionClass. But when I actually try to change the password using InitialDirContext.modifyAttributes(), I get the exception:
*javax.naming.OperationNotSupportedException: [LDAP: error code 53 - 00002077: SvcErr: DSID-03190DC9, problem 5003 (WILL_NOT_PERFORM), data 0*
*If anyone can help me figure out why it doesn't work, that would be great!*
P.S: I know the error seems to suggest that there might be some active directory setting that is preventing this from working, but I've checked all relevant settings on the Windows 2003 server Active Directory that I can think of: In the User properties->Account->Account options, I've made sure the user can change password. Also, in the Group Policy->Computer Configuration->Windows Settings->Security Settings->Account Policies->Password Policy, Maximum password age is zero and so is minimum password age.
Here's my java code:
{code}import javax.naming.*;
import javax.security.auth.*;
import java.security.PrivilegedAction;
import java.io.UnsupportedEncodingException;
public void changeSecret((String uid, String oldPassword, String newPassword)
     throws NamingException, ACException{
try {
     K5CallbackHandler cb = new K5CallbackHandler(uid, oldPassword);
     LoginContext lc = new LoginContext("marker", cb);
     lc.login();
     Subject.doAs(lc.getSubject(), new ChangePasswordAction(rz.getName(), oldPassword, newPassword));
     catch(LoginException e) {
     try {
          lc.logout();
     catch(LoginException e) {
}ChangePasswordAction.java is:import javax.naming.*;
import javax.naming.naming.directory.*;
import java.io.UnsupportedEncodingException;
private class ChangePasswordAction implements PrivilegedAction {
     private String uid;
     private String quotedOldPassword;
     private String quotedNewPassword;
     public ChangePasswordAction(String uid, String oldPassword, String newPassword) {
          this.uid = uid;
          quotedOldPassword = "\"" + oldPassword + "\"";
          quotedNewPassword = "\"" + newPassword + "\"";
     public Object run() {
          Hashtable env = new Hashtable(11);
          env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
          env.put(Context.PROVIDER_URL, "ldap://ad2k3:389");
          env.put(Context.SECURITY_AUTHENTICATION, "GSSAPI");
          try {
               DirContext ctx = new InitialDirContext(env);
               ModificationItem[] mods = new ModificationItem[2];
               byte[] oldPasswordUnicode = quotedOldPassword.getBytes("UTF-16LE");
               byte[] newPasswordUnicode = quotedNewPassword.getBytes("UTF-16LE");
               mods[0] = new ModificationItem(DirContext.REMOVE_ATTRIBUTE, new BasicAttribute("unicodePwd", oldPasswordUnicode));
               mods[1] = new ModificationItem(DirContext.ADD_ATTRIBUTE, new BasicAttribute("unicodePwd", newPasswordUnicode));
               ctx.modifyAttributes(uid, mods);
               ctx.close();
          } catch (NamingException e) {
          } catch (UnsupportedEncodingException e) {
          return null;
}K5CallbackHandler is:import javax.security.auth.callback.*;
final class K5CallbackHandler
implements CallbackHandler {
     private final String name;
     private final char[] passwd;
     public K5CallbackHandler(String nm, String pw) {
          name = nm;
          if(pw == null) {
               passwd = new char[0];
          else {
               passwd = pw.toCharArray();
     public void handle(Callback[] callbacks)
     throws java.io.IOException, UnsupportedCallbackException {
          for(int i = 0; i < callbacks.length; i++) {
               if(callbacks[i] instanceof NameCallback) {
                    NameCallback cb = (NameCallback) callbacks;
                    cb.setName(name);
               else {
                    if(callbacks[i] instanceof PasswordCallback) {
                         PasswordCallback cb = (PasswordCallback) callbacks[i];
                         cb.setPassword(passwd);
                    else {
                         throw new UnsupportedCallbackException(callbacks[i]);
}The relevant entry in the JAAS.conf file that is referred to as "marker" in the LoginContext constructor is:
marker {
com.sun.security.auth.module.Krb5LoginModule required client=TRUE;

This is one of the two Active Directory operations I have never solved using Java/JNDI. (FYI the other one is Cross Domain Move).
My gut feel is that the underlying problem (which happens to be common to both Change Password & X-Domain Move) is that Java/JNDI/GSSAPI does not negotiate a sufficiently strong key length that allows Active Directory to change passwords or perform cross domain moves when using Kerberos & GSSAPI.
Active Directory requires at a minimum, 128 bit key lengths for these security related operations.
In more recent Kerberos suites and Java versions, support for RC4-HMAC & AES has been introduced, so it may be possible that you can negotiate a suitably string key length.
Make sure that your Kerberos configuration is using either RC4-HMAC or AES and that Java is requesting a strong level of protection. (You can do this by adding //Specify the quality of protection
//Eg. auth-conf; confidentiality, auth-int; integrity
//confidentiality is required to set a password
env.put("javax.security.sasl.qop","auth-conf");
//require high strength 128 bit crypto
env.put("javax.security.sasl.strength","high"); in your ChangePasswordAction class.
You may also want to enable sasl logging in your app to see what exactly is going on and you may also want to check on the Java Security forum how to configure/enforce/check both RC4-HMAC or AES is used as the Kerbeos cipher suite and that a string key length is being used.
Good luck.

Call weblogic EJB without using weblogic.jndi.T3InitialContextFactory

I am trying to call an ejb on a weblogic server without using weblogic.jndi.T3InitialContextFactory.
The context retrieval is as follows:
Properties table = new Properties();
table.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.cosnaming.CNCtxFactory");
table.put(Context.PROVIDER_URL, "iiop://localhost:7001");
Context context = new InitialContext(table);
return context;
but when I run the client I am getting the follwing error:
javax.naming.CommunicationException: Cannot connect to ORB [Root exception is org.omg.CORBA.COMM_FAILURE: vmcid: SUN minor code: 201 completed: No]
at com.sun.jndi.cosnaming.CNCtx.setOrbAndRootContext(CNCtx.java:362)
at com.sun.jndi.cosnaming.CNCtx.initUsingIiopUrl(CNCtx.java:289)
at com.sun.jndi.cosnaming.CNCtx.initUsingUrl(CNCtx.java:245)
at com.sun.jndi.cosnaming.CNCtx.initOrbAndRootContext(CNCtx.java:209)
at com.sun.jndi.cosnaming.CNCtx.<init>(CNCtx.java:69)
at com.sun.jndi.cosnaming.CNCtxFactory.getInitialContext(CNCtxFactory.java:32)
at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:662)
at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:243)
at javax.naming.InitialContext.init(InitialContext.java:219)
at javax.naming.InitialContext.<init>(InitialContext.java:195)
at com.test.TestDirectDocumentLoad.getContext(TestDirectDocumentLoad.java:59)
at com.test.TestDirectDocumentLoad.loadDocs(TestDirectDocumentLoad.java:139)
at com.test.TestDirectDocumentLoad.main(TestDirectDocumentLoad.java:116)
Caused by: org.omg.CORBA.COMM_FAILURE: vmcid: SUN minor code: 201 completed: No
at com.sun.corba.se.internal.iiop.ConnectionTable.getConnection(ConnectionTable.java:173)
at com.sun.corba.se.internal.iiop.ConnectionTable.getConnection(ConnectionTable.java:65)
at com.sun.corba.se.internal.iiop.GIOPImpl.getConnection(GIOPImpl.java:67)
at com.sun.corba.se.internal.corba.ClientDelegate.createRequest(ClientDelegate.java:652)
at com.sun.corba.se.internal.corba.ClientDelegate.createRequest(ClientDelegate.java:594)
at com.sun.corba.se.internal.corba.InitialNamingClient.resolve(InitialNamingClient.java:1105)
at com.sun.corba.se.internal.corba.InitialNamingClient.resolveUsingBootstrapProtocol(InitialNamingClient.java:788)
at com.sun.corba.se.internal.corba.InitialNamingClient.cachedInitialReferences(InitialNamingClient.java:1186)
at com.sun.corba.se.internal.corba.InitialNamingClient.resolve_initial_references(InitialNamingClient.java:1079)
at com.sun.corba.se.internal.corba.ORB.resolve_initial_references(ORB.java:2436)
at com.sun.jndi.cosnaming.CNCtx.setOrbAndRootContext(CNCtx.java:340)
... 12 more
I have the J2EE jar on the client path and all....but can't get through this error
need help guys!
Samir

Samir j <> writes:
Make sure IIOP is enabled on the server side. There was a bug in
earlier 8.1 config wizards that defaulted it to off.
andy
I am trying to call an ejb on a weblogic server without using weblogic.jndi.T3InitialContextFactory.
The context retrieval is as follows:
Properties table = new Properties();
table.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.cosnaming.CNCtxFactory");
table.put(Context.PROVIDER_URL, "iiop://localhost:7001");
Context context = new InitialContext(table);
return context;
but when I run the client I am getting the follwing error:
javax.naming.CommunicationException: Cannot connect to ORB [Root exception is org.omg.CORBA.COMM_FAILURE: vmcid: SUN minor code: 201 completed: No]
at com.sun.jndi.cosnaming.CNCtx.setOrbAndRootContext(CNCtx.java:362)
at com.sun.jndi.cosnaming.CNCtx.initUsingIiopUrl(CNCtx.java:289)
at com.sun.jndi.cosnaming.CNCtx.initUsingUrl(CNCtx.java:245)
at com.sun.jndi.cosnaming.CNCtx.initOrbAndRootContext(CNCtx.java:209)
at com.sun.jndi.cosnaming.CNCtx.<init>(CNCtx.java:69)
at com.sun.jndi.cosnaming.CNCtxFactory.getInitialContext(CNCtxFactory.java:32)
at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:662)
at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:243)
at javax.naming.InitialContext.init(InitialContext.java:219)
at javax.naming.InitialContext.<init>(InitialContext.java:195)
at com.test.TestDirectDocumentLoad.getContext(TestDirectDocumentLoad.java:59)
at com.test.TestDirectDocumentLoad.loadDocs(TestDirectDocumentLoad.java:139)
at com.test.TestDirectDocumentLoad.main(TestDirectDocumentLoad.java:116)
Caused by: org.omg.CORBA.COMM_FAILURE: vmcid: SUN minor code: 201 completed: No
at com.sun.corba.se.internal.iiop.ConnectionTable.getConnection(ConnectionTable.java:173)
at com.sun.corba.se.internal.iiop.ConnectionTable.getConnection(ConnectionTable.java:65)
at com.sun.corba.se.internal.iiop.GIOPImpl.getConnection(GIOPImpl.java:67)
at com.sun.corba.se.internal.corba.ClientDelegate.createRequest(ClientDelegate.java:652)
at com.sun.corba.se.internal.corba.ClientDelegate.createRequest(ClientDelegate.java:594)
at com.sun.corba.se.internal.corba.InitialNamingClient.resolve(InitialNamingClient.java:1105)
at com.sun.corba.se.internal.corba.InitialNamingClient.resolveUsingBootstrapProtocol(InitialNamingClient.java:788)
at com.sun.corba.se.internal.corba.InitialNamingClient.cachedInitialReferences(InitialNamingClient.java:1186)
at com.sun.corba.se.internal.corba.InitialNamingClient.resolve_initial_references(InitialNamingClient.java:1079)
at com.sun.corba.se.internal.corba.ORB.resolve_initial_references(ORB.java:2436)
at com.sun.jndi.cosnaming.CNCtx.setOrbAndRootContext(CNCtx.java:340)
... 12 more
I have the J2EE jar on the client path and all....but can't get through this error
need help guys!
Samir

When to use abstract class compared to interface

hi
can some one plase advise me when to use abstract class compared to interface?
Example will be appreciated...

So an abstract class can carry implementation. This can be used to formulate a rule of thumb as to when to use it over an interface.
If you have a so called type specialization relationship between the subtypes and the supertype then they're likely to benefit from shared implementation provided by the supertype, so use class (abstract or concrete) extension in this case. Type specialization is when the supertype represents a general concept like Fruit and the subtypes are specialized forms of that like Apple and Banana.
Another common kind of relationship is called type expansion. In this case the subtypes are unlikely to have any use of implementation provided by the supertype, so use interface implementation. Type expansion is when the supertype represents a specific character the subtypes take on. For example Apple and Bicycle ure unrelated in the type specialization sense but still can share a common character like Comparable. The subtypes have been expanded to include the supertype character, namely the ability to be compared.

Using expression to compare Calendar object

Hi,
I wonder if anyone has experience to use expression to compare Calendar object. Here is my case:
Application {
Calendar applicationDate;
What I want is something like:
expression.get("applicationDate").between(startDate, endDate);
But it is seems not working this way.
Any clue?
Thanks
Hao

What error are you getting, in general this should work, however the Calendar will be printed/bound as a java.sql.Timestamp.
If you require to use java.sql.Date if you just want the date portion of the Calendar.
If your mapping for applicationDate sets the fieldClassification (i.e. is a TypeConversionMapping), then TopLink will automatically convert the Calendar value in the expression to the correct date type.

Are there pros and cons to using TFS as compared to Sharepoint?

are there pros and cons to using TFS as compared to Sharepoint?

TFS and SharePoint are two different products with overlapping functionality.
If you are planning to use TFS for Application Lifecylce management, then I would not suggest SharePoint replacing TFS.
Hope this helps!
Ram - SharePoint Architect
Blog - SharePointDeveloper.in
Please vote or mark your question answered, if my reply helps you

Use of JNDI compare to JDBC

Similar Messages

Maybe you are looking for