JDBC with 8.1.7
Hi,
I have installed a new Oracle 8.1.7 client on Sun box. And when I ran my JDBC/OCI client I found out that after the connection is closed, the password for the user who was connecting has been changed without any obviuos reasons. If you meet the same problem, here is the solution: make sure that you use 8.1.7 JDBC driver (classes12.zip) and not the older one. In my case JDeveloper added JDBC 8.1.6 driver during deploy to the .jar file and I spent a week to find out what the problem is.
Best,
Anton
jdev 3.2 is required to work with 8.1.7
jdev 3.1 is required to work with 8.1.6
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Hi,
I am trying to connect to a SQL server database by giving table name in (SPVC) database as spvc.dbo.tablename.. If i want to access another database (SPVC_D), how can i do it without changing my java code?? Can i be able to add the database name to the connection string and i can remove the hard coding (spvc.dbo.) from my java code?? How shall i be able to do that..
Please let me know.. I am very new with JDBC with SQL server..
Thanks
Praveen PadalaIn the MS SQL Server that I use, the following syntax
spvc.dbo.tablename
Breaks done as follows...
<database>.<user>.<tablename>
However connections are always to a database. Thus when one uses the above syntax it basically runs 'in' the one database and accesses another.
Depending on various attributes of the tables, if and only if, a table called 'tablename' exists in a database called 'spvc_d' then if you connect to 'spvc_d' then you can access 'tablename' just by using 'tablename'.
So if that is what you are doing you will not have a problem. -
Hi,
i want to replace my JDBC with Jco to communicate with SAP. May i know what all are required to do ?if you want to use adaptive rfc model that can communicate with SAP you need to follow this link
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Use direct JDBC with CMP entity bean in one transaction
I am trying to use direct JDBC call with CMP entity bean within a session
bean method that requires transaction. The problem is that it appears these
are not in the same transaction. When I use the JDBC call, the CMP entity
bean update to the DB has not been committed yet.
We are using Weblogic 5.1 SP6. The DB is Oracle.
What I do for the JDBC is get a new connection from the pool using weblogic
jdbc pool driver.
Any help would be appreciated.
PatrickHi. You can do JDBC and invoke CMP EJBs and have this all treated
as one transaction, if your hand-written code explicitly starts
a JTS transaction, then uses the jts driver or a TxDataSource to
get the JDBC connection. Then your code can call transactional
EJBs and their work will be included in the transaction you started.
Assuming the bean work went OK, and your manual JDBC went OK, you
can manually commit the UserTransaction at that time. This is 5.1
talk. For 6.0, with @PC, this may be even easier...
Joe
Patrick Shen wrote:
>
But if I do that, then they would not be in the same transaction anymore.
Is there any way to use JDBC with CMP Entity bean in the same transaction?
Patrick
"L'artiste" <[email protected]> wrote in message
news:[email protected]...
Are you calling all the CMP create in the session Bean ? If so, beforeyou
make the JDBC call from the session bean, the CMP in 2. should commit. Try
to set its attribute to TX_REQUIRES_NEW. This way, the calling client will
block until this transaction is done (committed) before the execution
continues. There might be some overhead involved in doing so if you are
anticipating a lot of users.
"Patrick Shen" <[email protected]> wrote in message
news:[email protected]...
What I am trying to do is:
In a Session bean method -
1. create a new CMP entity bean (a new row in DB table)
2. create another new CMP entity bean that uses previous bean as foreignkey
3. use JDBC to update the row just created
And all these 3 calls have to be in one transaction.
Thanks,
Patrick
"L'artiste" <[email protected]> wrote in message
news:[email protected]...
Can you give a little bit more information?
Do you have methods in your session bean that creates this CMP entitybeans?
It looks like
you might wanna try to change the isolation level to
TRANSACTION_READ_COMITTED
to preven dirty_read.
"Patrick Shen" <[email protected]> wrote in message
news:[email protected]...
I am trying to use direct JDBC call with CMP entity bean within a
session
bean method that requires transaction. The problem is that it
appears
these
are not in the same transaction. When I use the JDBC call, the CMP
entity
bean update to the DB has not been committed yet.
We are using Weblogic 5.1 SP6. The DB is Oracle.
What I do for the JDBC is get a new connection from the pool usingweblogic
jdbc pool driver.
Any help would be appreciated.
Patrick
PS: Folks: BEA WebLogic is expanding rapidly, with both entry and advanced positions
for people who want to work with Java, XML, SOAP and E-Commerce infrastructure products.
We have jobs at Nashua NH, Liberty Corner NJ, San Francisco and San Jose CA.
Send resumes to [email protected] -
How to use unload query using JDBC with Informix database
Hi friends,
How can i use unload query using JDBC with Informix database?
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Thanks,
Raneesh.To the best of my ability to tell, the right way to use this product from within Power Query would be to use its API. Unfortunately, we don't currently support either of the methods needed to be able to authenticate with the service (OAuth 2.0 and a relatively-custom
digest-based method). Adding a mechanism to allow use of arbitrary OAuth-protected resources is a fairly high priority for us, and I hope we'll be able to deliver something before mid-2015.
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How use jdbc with swing ? i am new in this concept.
hi
freinds,
i am new in java can any one give the example which explain the how to use jdbc with swing.
thanks in advace.
satish
thanks.See here > http://support.apple.com/kb/HT4236
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How to connect to Pgsql on server through jdbc with java on local machine
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ThanksThe closer java and pgsql, the easier it is of course to connect. So the easiest way is to have everything on the same machine. If you are in the same network you will need an IP based network, which is pretty much standard these days. In this case you need to modify the pg_hba.conf file to allow connections from other machines. In both cases you have to start the postmaster with the -i option to enable enable TCP/IP connections.
Having java and pgsql connected through the internet is a different story, I do not have any experience with that. But you can use ssh to build a tunnel and connect to a local ip address / port from java which is then forwared securely via the internet to the server.
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good luck -
Problem connecting JDBC with SQLServer 2005
* While executing the following JDBC code with SQLServer 2005, it throws Exception
* I dont wts wrong in my code, (Note: I have included the sqljdbc.jar in my path)
* Pls let me know the problems in my code
* Thanks, Following is my code and error
CODE:
import java.sql.*;
public class JDBCwithJava {
public void work() {
// Create a variable for the connection string.
String connectionUrl = "jdbc:sqlserver://localhost:1433;" +"databaseName=empdb";
// Declare the JDBC objects.
Connection con = null;
Statement stmt = null;
ResultSet rs = null;
try {
//Load the driver
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
// Establish the connection.
con = DriverManager.getConnection(connectionUrl);
System.out.println("Database Successfully Connected...!");
//Connection Info
DatabaseMetaData dm = con.getMetaData();
System.out.println("Driver Information");
System.out.println("\t Driver Name: "+ dm.getDriverName());
System.out.println("\t Driver Version: "+ dm.getDriverVersion ());
System.out.println("\n Database Information ");
System.out.println("\t Database Name: "+ dm.getDatabaseProductName());
System.out.println("\t Database Version: "+ dm.getDatabaseProductVersion());
// Create and execute an SQL statement that returns some data.
String SQL = "select * from emptable";
stmt = con.createStatement();
rs = stmt.executeQuery(SQL);
// Iterate through the data in the result set and display it.
while (rs.next()) {
System.out.println(rs.getInt(1) + " " + rs.getString(2));
// Handle any errors that may have occurred.
catch (Exception e) {
e.printStackTrace();
finally {
if (rs != null)
try {
rs.close();
catch(Exception e) {
if (stmt != null) try { stmt.close(); } catch(Exception e) {}
if (con != null) try { con.close(); } catch(Exception e) {}
public static void main(String ar[]){
JDBCwithJava call = new JDBCwithJava();
call.work();
OUTPUT with ERROR:
com.microsoft.sqlserver.jdbc.SQLServerException: The TCP/IP connection to the host has failed. java.net.ConnectException: Connection refused: connect
at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDriverError(Unknown Source)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper(Unknown Source)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.loginWithoutFailover(Unknown Source)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(Unknown Source)
at com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at JDBCwithJava.work(JDBCwithJava.java:17)
at JDBCwithJava.main(JDBCwithJava.java:58)* Please give me your suggestion about the above program.........JavaImran wrote:
RoyGrini wrote :
Looks like login problems. Username/password or windows authentication logon problem. * I didnt give any UN and Pwd for my database.........And the
at com.microsoft.sqlserver.jdbc.SQLServerConnection.loginWithoutFailover(Unknown Source)gives you a 'connection refused'
Try with providing a SQL username/password. Maybe that will work
- Roy -
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Due to JDOQL's limitations (inability to express joins, when relationships
are not modeled as object references), I find myself needing to drop down to
expressing some queries in SQL through JDBC. However, I still want my Java
code to remain independent of the O/R mapping. I would like to be able to
formulate the SQL without hardcoding any knowledge of the relational table
and column names, by using Kodo's metadata. After poking around the Kodo
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ClassMetaData cmd = ClassMetaData.getInstance(MyPCObject.class, pm);
FieldMetaData fmd = cmd.getDeclaredField( "myField" );
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(PersistenceManagerImpl) pm );
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Column[] cols = fm.getDataColumns();
Does that look about right?
Here's what I'm trying to do:
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String name; // application identity
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class Bar
String name; // application identity
int weight;
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100. Clearly this is trivial to do in JDOQL, if Foo.bar is an object
reference to Bar. But there are frequently good reasons for modeling
relationships as above, for example when Foo and Bar are DTOs exposed by the
remote interface of an EJB. (Yeah, yeah, I'm lazy, using my
PersistenceCapable classes as both the DAOs and the DTOs.) But I still want
to do queries that navigate the relationship; it would be nice to do it in
JDOQL directly. I will also want to do other weird-ass queries that would
definitely only be expressible in SQL. Hence, I'll need Kodo's O/R mapping
metadata.
Is there anything terribly flawed with this logic?
BenI have a one point before I get to this:
There is nothing wrong with using PC instances as both DAO and DTO
objects. In fact, I strongly recommend this for most J2EE/JDO design.
However, there should be no need to expose the foreign key values... use
application identity to quickly reconstitute an object id (which can in
turn find the persistent version), or like the j2ee tutorial, store the
object id in some form (Object or String) and use that to re-find the
matching persistent instance at the EJB tier.
Otherwise, there is a much easier way of finding ClassMapping instances
and in turn FieldMapping instances (see ClassMapping.getInstance () in
the JavaDocs).
Ben Eng wrote:
Due to JDOQL's limitations (inability to express joins, when relationships
are not modeled as object references), I find myself needing to drop down to
expressing some queries in SQL through JDBC. However, I still want my Java
code to remain independent of the O/R mapping. I would like to be able to
formulate the SQL without hardcoding any knowledge of the relational table
and column names, by using Kodo's metadata. After poking around the Kodo
Javadocs, it appears as though the relevant calls are as follows:
ClassMetaData cmd = ClassMetaData.getInstance(MyPCObject.class, pm);
FieldMetaData fmd = cmd.getDeclaredField( "myField" );
PersistenceManagerFactory pmf = pm.getPersistenceManagerFactory();
JDBCConfiguration conf = (JDBCConfiguration)
((EEPersistenceManagerFactory)pmf).getConfiguration();
ClassResolver resolver = pm.getClassResolver(MyPCObject.class);
Connector connector = new PersistenceManagerConnector(
(PersistenceManagerImpl) pm );
DBDictionary dict = conf.getDictionary( connector );
FieldMapping fm = ClassMapping.getFieldMapping(fmd, conf, resolver, dict);
Column[] cols = fm.getDataColumns();
Does that look about right?
Here's what I'm trying to do:
class Foo
String name; // application identity
String bar; // foreign key to Bar
class Bar
String name; // application identity
int weight;
Let's say I want to query for all Foo instances for which its bar.weight >
100. Clearly this is trivial to do in JDOQL, if Foo.bar is an object
reference to Bar. But there are frequently good reasons for modeling
relationships as above, for example when Foo and Bar are DTOs exposed by the
remote interface of an EJB. (Yeah, yeah, I'm lazy, using my
PersistenceCapable classes as both the DAOs and the DTOs.) But I still want
to do queries that navigate the relationship; it would be nice to do it in
JDOQL directly. I will also want to do other weird-ass queries that would
definitely only be expressible in SQL. Hence, I'll need Kodo's O/R mapping
metadata.
Is there anything terribly flawed with this logic?
Ben
Steve Kim
[email protected]
SolarMetric Inc.
http://www.solarmetric.com -
Using JDBC with Visual Studio J++ doesn't work.
G'day all,
I am trying to create an applet that extracts data from an Access 2000 database, which is then displayed to the applet. Currently I am using Visual Studio J++ 6.0 as my development platform.
I am having trouble trying to connect to my Access 2000 database, and I'm searching for some example code on how to do this.
I'm pretty much a Java newbie, so all my attempts have failed. Also since all the example code I have is for a JDK implementation I'm not sure if my J++ complier is throwing an error on the basis that the code is not Misro$oft.
Does anyone know where I can source code for such a solution, for connection to an Access 2000 database under a J++ 6.0 compiler?
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You're limited by the lack of support for the java standard in Microsoft's J++ 6.0's VM. I tried to get JDBC to work for a while in J++ and was unable to. I finally broke down and wrote the thing using ADO. The ADO interface is very intuative for ADO programmers and in fact the syntax is similar to JDBC.
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-Ryan -
JDBC with win 98 (any problems or smoth like XP)
Hi guys,
A new client of mine has a network of 6 computers where all of them are running under winXP and his computer is running under win98 (go figure?!)
Anyway, I have created a Java console application that use MS db and it works beautiful. My concern is, and feel free to correct me, that I might encounter some difficulties with his OS.
Anyone experienced any problem with Java (JDBC) and win98?
Thanks
PprPeople have problems all the time with all kinds of things. If you're asking if the database will run on Windows 98, I would suggest reading its documentation (although I would be surprised to find one that doesn't). I run MySQL on Windows 98.
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I am having trouble connecting to my MSSQL7 DB. I am using WebLogic 5.1 and when run the following code, I get a "Error 500--Internal Server Error" message.
Class.forName("weblogic.jdbc.mssqlserver4.Driver");
java.sql.Connection connection = java.sql.DriverManager.getConnection("jdbc:weblogic:mssqlserver4:(DBname)");
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Sender JDBC with Stored Procedure or Function
Hi.
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As the consultation is so complex and the table has fed up transactions, often it takes the registry A and updates register B.
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"The JDBC driver returned the following error message: 'java.sql.SQLException: ORA-08177: can't serialize access for this transaction '. For details, contact your database server vendor."
Try to invoke to a function (/people/jegathees.waran/blog/2007/03/02/oracle-table-functions-and-jdbc-sender-adapter) but when placing a sentence of UPDATE within the function throws an error, I reviewed to me and calling to a function from a SELECT, Oracle it does not allow to modify registries of the database.
Some other suggestion?Hi,
See this link,
Here is an example of mapping for synch JDBC.
/people/siva.maranani/blog/2005/09/16/xi-how-to-on-jdbc-receiver-response
/people/siva.maranani/blog/2005/05/21/jdbc-stored-procedures
Also go thru these links:
http://help.sap.com/saphelp_nw2004s/helpdata/en/2e/96fd3f2d14e869e10000000a155106/content.htm
/people/alessandro.berta/blog/2005/10/04/save-time-with-generalized-jdbc-datatypes
http://help.sap.com/saphelp_nw2004s/helpdata/en/4d/8c103e05df2e4b95cbcc68fed61705/frameset.htm
Regards,
Akshay Jamgaonkar.
Reward points if find useful. -
Performance degradation in j2sdk1.4 than jdk1.3 for jdbc with oracle
Hi All
I am working on performance issues regarding response time . i have upgraded my system from jdk1.3 to j2sdk1.4 . I was expecting the performance gain in terms of response time in j2sdk1.4. but to my surprise it shows varied results with my application. it shows that j2sdk1.4 is taking higher time for executing the application when it has to deal with database. I am using oracle 9i as the backend database server.
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Thanx in advanceI'm not sure about the error you're getting, but you might want to try a few things:
1) Try the thin driver instead of the oci driver. The thin driver is all java, while the oci requires an Oracle client installation (which might be why your getting the memory error). I think the only programming difference is the URL, so if you need to switch later it should be relatively easy.
2) Instead of DriverManager.registerDriver(), try Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
3) I know this sounds bad, but try throwing some print statements in to see how far you're getting.
Here a quick sample. And remember to include the classes111.zip in your classpath.
import java.sql.*;
public class OracleTest {
public static void main(String args[]) {
try {
Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
Connection c = DriverManager.getConnection(
"jdbc:oracle:thin:@localhost:1521:orcl","scott","tiger");
System.out.println("Got connection.");
c.close();
} catch (Exception e) {
System.out.println("Error: " + e); -
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Simply put, is there a way to compile so the byte code never needs the .jar, and if not how about making my program see the jar which is in my root folder (not root on the server, but my user root folder)
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dbConnect
ojdbc14.jar
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So now here is my real question. I want to be able to have my neighbor run my application, so what do I do to run the application dbConnect.java on their computer?
I have tried the following, however it gives an exception in the thread when I run this
javac dbConnect.java
java -classpath ./ojdbc14.jar dbConnect
Exception in thread "main" java.lang.NoClassDefFoundError: dbConnect.The program right now is simply a test to see if I can load the driver and make a connection, and it works on my system, so there should be no problems:
import java.io.*;
import java.sql.*;
public class dbConnect
//Create an input stream for reading data from the user
private static BufferedReader stdin =
new BufferedReader(new InputStreamReader(System.in));
public static void main(String[] args)
try{
//>Load the Oracle JDBC Drivers
try
Class.forName("oracle.jdbc.driver.OracleDriver");
catch(Exception e)
System.out.println("Failed to load Oracle driver.");
System.exit(0);
//>Get username, password, and url for Oracle DB connection.
String user, pass, url;
System.out.println("Please enter your username: ");
user = stdin.readLine();
System.out.println("Please enter your password: ");
pass = stdin.readLine();
url = "jdbc:oracle:thin:@somewhere:1521:csl";
Connection conn = null;
Statement stmt = null;
//>Successfully connect to the Oracle database using JDBC and CSLab account.
try
conn = DriverManager.getConnection(url, user, pass);
System.out.println("Connection made!");
catch(Exception e)
System.out.println("Incorrect login information.");
System.exit(0);
}catch(Exception e){
System.out.println("Exception in main program. Terminating process.");
} -
Using jdbc with oracle-for-win95
i am using oracle thin driver to connect my java code with oracleforwin95 i think it is called as personal oracle, while getting conection DriverManager.getConection("drivername@host:port(1521):sid","user","password") there is no sid for oracleforwin95 if i keep it blank i get an error connection refused some thing like that even i cannot use dsn for connection what is the problem should i use another driver if yes which one it is and from where it can be downloaded, or should i need to configure my oracle. please help me.
This is my code given below
import java.sql.*;
public class Oconnection
Connection conn;
Statement st;
PreparedStatement pst,pstissue,pstret,pstbook;
public Oconnection()
try
Class.forName("oracle.jdbc.driver.OracleDriver");
conn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:orcl","system","manager");
catch(Exception ex)
System.out.println(ex.getMessage());
ex.printStackTrace();
public static void main(String args[])
new Oconnection();
*****************************************************8
Error
C:\Library>java Oconnection
Io exception: The Network Adapter could not establish the connection
java.sql.SQLException: Io exception: The Network Adapter could not establish the
connection
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:169)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:211)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:324)
at oracle.jdbc.driver.OracleConnection.<init>(OracleConnection.java:266)
at oracle.jdbc.driver.OracleDriver.getConnectionInstance(OracleDriver.ja
va:365)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:260)
at java.sql.DriverManager.getConnection(DriverManager.java:517)
at java.sql.DriverManager.getConnection(DriverManager.java:177)
at Oconnection.<init>(Oconnection.java:17)
at Oconnection.main(Oconnection.java:39)
I am using Oracle for win95 or i think it is oarcleforwin98 .
The sid of my database i found through query given by you was orcl, what changes soulh i do int he code so that it works.
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