Problems with jdbc drivers

I'm having problems registering jdbc drivers. I've been trying to register the microsoft Sql Server 2000 jdbc driver so that I can create a connection in my code rather than using entity beans. I've set the CLASSPATH variable to point to the driver's .jar files in the install directory with no success.
I've connected to the database using the driver via the IDE' s Runtime and it tests ok and allows me to create a database schema ok. (I had to copy the driver files to the sun/studio5u1_se/lib/ext dir to enable this) Is there a location I can unpack the drivers .jar files which will make the driver available?
I have also tried setting the CLASSPATH variable to point to the above mentioned directory..but that didn't work either. Can anyone help?
These are the exception messages that I get
java.lang.ClassNotFoundException: com.pointbase.jdbc.jdbcUniversalDriver
at java.net.URLClassLoader$1.run(URLClassLoader.java:199)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)
at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:141)
at Portfolio.DriverTest.getConnection(DriverTest.java:43)
at Portfolio.DriverTest.main(DriverTest.java:102)
Error Trace in getConnection() : com.pointbase.jdbc.jdbcUniversalDriver

If u type in command line
java -classpath .;<directory containing the driver>
it executes your class file properly
note that <directory containing the driver> is the full path to your driver. I mean, the directory that contains your driver\drivername
eg:
java -classpath .;c:/driver/drivername
don�t forget to put the "dot" before semicolon. If u forget it, java won�t find your class file. your class file must be at the directory you�re executing the command
I need to configure my sun studo ent. to locate my jdbc driver for mySQL. I don�t know where this can be made. If any of you know. please report me

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user_name varchar(15) not null,
role_name varchar(15) not null,
primary key( user_name, role_name )
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Hi, Paul.
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Last edited by jmad980 (2011-04-07 07:37:21)

$200 reward to solve problem with JDBC and CLOB.getCharacterOutputStream

I'm trying to update CLOB with the getCharacterOutputStream as suggested in the example code. It works with US7ASCII DB instance but not instances in UTF8.
I've been browsing through all the Oracle doc's and found some rather confusing statements:
In the page at http://oradoc.photo.net/ora816/java.816/a81354/oralob2.htm#1043220
it says: [When writing to or reading from a CLOB, the JDBC drivers perform all character set conversions for you.]
also: [The oracle.sql.CLOB class supports all the character sets that the Oracle data server supports for CLOB types.]
So far so good.
In the page at http://oradoc.photo.net/ora816/java.816/a81354/oraint3.htm#1012518
it says [The oracle.sql package supports these datatypes in several ways: CLOBs point to large fixed-width character data items (that is, characters that require a fixed number of bytes per character) and are supported by the oracle.sql.CLOB class.]
Ooh no! Is this for real? UTF8 is variable width and does this mean it is not supported?
Any way to get around this?
In the page at http://oradoc.photo.net/ora816/java.816/a81358/03_pub2.htm#36009
says [6.The mappings to oracle.sql classes are optimal because they preserve data formats and require no character-set conversions (apart from the usual network conversions). Those classes are especially useful in applications that "shovel" data between SQL and Java.]
"No character set conversion"? Very confusing!
I've been hammering on this CLOB/JDBC/UTF8 problem for more than a week now and I really appreciate some solutions, workarounds, or whatever help I can get. I'm running java stored procedure in 8.1.6 on Linux RH6.2.
For your trouble, I'd pay $200 for the first guy who come up with a verifiable solution.

This is just findings based upon your comments:
Please refer to document Oracle8i National Language Support Guide
Release 2 (8.1.6) from Oracle Documentation Library, Release 8.1.7
Chapter 6 Java,
There its clearly mention that:
"Oracle JDBC drivers provide globalization support by allowing users to retrieve data from or insert data into a database in any character set that Oracle supports. Because Java strings are UCS2 encoded (16-bit Unicode) for JDBC programs, the target character set on the client is always UCS2. Character set conversion is required to convert data from the database character set (Db Charset) to UCS2. This applies to CHAR, LONG, CLOB, and VARCHAR2 data types; RAW data is not converted. "
Also..please refer this...
"oracle.sql.CLOB's method getCharacterStream() returns the contents of a CLOB as a Unicode stream."
"The techniques that Oracle's drivers use to perform character set conversion for Java applications depend on the character set the database uses. The simplest case is where the database uses a US7ASCII or WE8ISO8859P1 character set. In this case, the driver converts the data directly from the database character set to UCS2,which is used in Java applications. "
"If you are working with databases that employ a non-US7ASCII or non-WE8ISO8859P1 character set (for example, Japanese or Korean), then the driver converts the data, first to UTF8, then to UCS2. "
In my case the characte-set of the database is WE8ISO8859P1 and for security reason i can't change the character set but my feeling is that if you are updating the CLob from the java client you are forming a reference of a clob in the client which is UCS2 at the Java side. Now when you are populating the clob through java.io.Writer and call the procedure to pass the reference of the clob to the procedure then I believe the JDBC will convert the UCS2 datatype of Clob to UTF8 in the database.
You can try out the code snippet:
package ServletGDC;
import java.io.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
import oracle.sql.*;
import java.sql.*;
import oracle.jdbc.driver.*;
import ClassesGDC.*;
public class testUpload extends HttpServlet {
private String m_strMessage="";//It stores the message to be uploaded along with the Document
Connection conn=null;
public void doPost(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
String strContent="";
//res.setContentType("application/msword");
res.setContentType("text/html");
PrintWriter out = res.getWriter();
try {
CallableStatement cmt=null;
OutputStream output=null;
ByteArrayOutputStream byteoutput=null;
String strDocString="";
oracle.sql.CLOB tempClob = null;
String strPassedFileName=""; // the file name passed in the request object
String strStdFilename="";//the file name to be given to the best practice
String strSaveDirectory=""; //the directory in which the bp is to be saved
String strParamName="";//name of parameters
String strParamValue="";//value of parameters
int intTempVariable=0; // temporaty variable
long lngSizeOfFileUploaded=0;//stores the size of the file which had been uploaded in the file system
File filePathOfFileUploaded=null;//stores the path of the file uploaded to the file system
String strQuery="";
//ST------------checks if the user has logged in or not-----------------------
HttpSession session=req.getSession(true);
if(req.getContentLength()>20*1024*1024)
throw new skip("The size of the posted content is more than 10 MB . If you have a best practice whose size is more than 1 MB please mail it to Us.");
byteoutput = new ByteArrayOutputStream();
MultipartParser mp = new MultipartParser(req, 20*1024*1024); // 10MB is the limit of the file to be uploaded
Part part;//Its an abstact part which helps in retrieving information about the file and the parameters
while ((part = mp.readNextPart()) != null) {//Reads the next part
strParamName = part.getName();
// the following if is executed if the part is for a parameter rather than a file
if (part.isParam()) {
}else if (part.isFile()) {
// it's a file part
m_strMessage="inside file part";
FilePart filePart = (FilePart) part;
strPassedFileName = filePart.getFileName();
strContent= filePart.getContentType();
out.println(" strPassedFileName is "+strPassedFileName+"");
if(strPassedFileName != null || !(strPassedFileName.trim().equals("")) ) {
// the part actually contained a file
out.println(" before forming long");
//lngSizeOfFileUploaded = filePart.writeTo(filePathOfFileUploaded); //the statement upload the bestpractice in the
lngSizeOfFileUploaded = filePart.writeTo(byteoutput); //specified file path filePathOfFileUploaded.
out.println(" after file is written into the outputstream");
else {
throw new skip("The file name is null or it is empty space. Files in such Format are not accepted");
}//end of else if
}//end of while loop
if( lngSizeOfFileUploaded==0) {// the size of the file uploaded is zero then the file supplied was not proper and hence exception is to be thrown
//if(filePathOfFileUploaded.exists())
// filePathOfFileUploaded.delete();
throw new skip("The File could not be uploaded,Possible reasons may be that the file is sent null or the file is corrupted");
//END---------------the file is uploaded in the proper directory--------------------
//res.setContentType(strContent);
out.println(" long value is : "+lngSizeOfFileUploaded+" and content is "+strContent+"");
String strbyte= byteoutput.toString();
byteoutput.flush();
Class.forName("oracle.jdbc.driver.OracleDriver");
// Establish network connection to database
conn = DriverManager.getConnection("jdbc:oracle:thin:@pc-p32670:1521:GDCDBI","gdc_user","myuser");
//if(conn!=null)
out.println(" Connection formed"+conn);
//els
//out.println(" long value is : "+strbyte+"");
try{
tempClob = oracle.sql.CLOB.createTemporary(conn,true, oracle.sql.CLOB.DURATION_SESSION);
out.println(" tempClob : "+tempClob);
tempClob.open( oracle.sql.CLOB.MODE_READWRITE);
java.io.Writer tempClobWriter = tempClob.getCharacterOutputStream();
// writing the string formed from the multipart file to the clob
tempClobWriter.write(strbyte);
if(tempClob!=null){}
out.println(" CLOB value is : "+tempClob+"");
strQuery="{call INSERT_CLOB(?,?)}";
cmt=conn.prepareCall(strQuery);
cmt.setString(1,strPassedFileName);
cmt.setClob(2,tempClob);
cmt.registerOutParameter(2,java.sql.Types.CLOB);
cmt.execute();
tempClobWriter.flush();
tempClobWriter.close();
tempClob.freeTemporary();
//res.setContentType(strContent);
//strDocString.toString();
out.println(" bob is "+strbyte+"");
tempClob.close();
}catch(Exception e){
tempClob.close();
out.println(" Error is :"+e.getMessage()+"");
//e.printStackTrace(out);
cmt.close();
//out.println(" <h2>SUCCESS</h2>");
//res.sendRedirect("../test/showfile.jsp?contentype="+strContent.trim()+"");
}catch(Exception e){
java.util.Date d = new java.util.Date();
String s =d.toString();
out.println(" Error is :"+e.getMessage()+"");
//e.printStackTrace(out);
}finally{
try{
if(conn!=null)
conn.close();
}catch(Exception e){
out.println(" Error is :"+e.getMessage()+"");
}// end of finally
} //end of doPost
} //end of class
in the Procedure you will be inserting/updating the clob in a table with the reference clob in the out parameter of the procedure
Thanks.

Problem with JDBC and Tomcat

I don't know where the problem originate, the only thing in my memory is that the program worked very well on my PC yesterday, but today, without even slightest change, it doesn't work anymore. As to debug it, I simplified the codes to the least, but it still refuse to work. I was beaten down by this problem totally, and cannot make out any solution for it, so, I come here, hoping to find a warrior to kill this damned bug for me.
My program is a Servlet, but for the purpose of debugging, I have recode it to an Application/Servlet. When run as a application, I can get the result expected, but as a Servlet, :-(, maybe you should see it by yourself. My server software is Tomcat 4.1.15, and the JDK version is 1.4.0. To excute this program, you should add Data Source "Test" to ODBC.
///////////////////////code begins/////////////////////////
import java.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
public class Ex extends HttpServlet
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 String err = new String("");
 public static void main(String args[]) throws Exception{
 Ex cEx = new Ex();
 cEx.init();
 System.out.println(cEx.ErrorType);
 public void init() {
 String url = "jdbc:odbc:Test";
 ErrorType = 3; //passed
 try{
 Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
 } catch (ClassNotFoundException e) {
 e.printStackTrace();
 ErrorType = 1; //trapped in Class.forName
 try{
 Connection c = DriverManager.getConnection(url);
 } catch (SQLException e) {
 e.printStackTrace();
 ErrorType = 2; //trapped in DriverManager.getConnection
 err = e.getMessage();
 public void service(HttpServletRequest req, HttpServletResponse res)
 throws IOException {
 res.setContentType("text/html; charset=GB2312");
 PrintWriter out = res.getWriter();
 out.println("Success " + "" + ErrorType + "" +err);
 out.close();
//////////////////////////code ends///////////////////////////////
The result from the Servlet tell me that the problem occurred within the connection process, I don't know who should be responsible to this - Tomcat or JDBC?

If you could print the exception that you got then that would help :) In the mean time, I could make a guess. It is unlikely that your application server (in this case, Tomcat) is blocking connections from your servlet. So the problem is either with JDBC directly or with the underlying datasource. It seems unlikely that it is JDBC given that you have stated that the code has not changed and it works in application form.
My guess would be that you are coming up against some sort of security constraint (eg: your DBMS is letting you log in from one IP but not another?, your Java plug-in security policy is disallowing the connection?). It's hard to say.
But if it works as an application but not via a servlet then you could try putting this in your java.policy file, which is located in the directory where your plug-ins are installed (eg: "C:\Program Files\Java\<version>\lib\security\") on Windows systems;
permission java.net.SocketPermission "bend xp:1099", "listen,connect,accept";
Try that, see if it works :)
Ben

I have a problem when using Google Maps, at some point my computer blanks the window and says there's a problem with display drivers, and it has recovered,but it doesn't. Problem doesn't happen with Int Explorrer, so I do not believe it is the computer

When using google maps through Firefox, after asking for a place which is not the general North America section which routinely comes up, the firefox screen goes white, with a narrow banner at the top. A message appears in the lower right corner which says something about display drivers having had a problem, but now have recovered. However the display doesn't recover and the banner message is that Firefox is not responding. When I go to restart Firefox if I go to the restore point, the page is still frozen out.
I do not believe it is a problem with my computer because it doesn't happen if I use I.E. to go to google maps, then G-maps works normally.
This phenomenon did not happen before the latest upgrade to either Google or Firefox. I have used Fiefox for a number of years and also Google Maps on previous computers and on this one, and not had this before.
This is a relatively young computer (Asus EeSlate 121) less than a year old. I have used Firefox since I bought it and until recently had no problem with Google Maps.

I solved it myself, after the "note" which came back from FF/Mozilla just as I finished my message, commenting on what it was that my system had , I wnnt back to check my plug-ins etc. I downloaded the latest Java, BOTH 32bit AND 64 bit versions and latest Firefox.
Now all is working.
Thanks,
B.

Problem with JDBC results calling simple stored procedure in VC 7.0

Hi all,
I am building a simple VC model which calls a stored procedure on a JDBC database. I have created the system in the portal, defined the alias and user mapping, the connection test is fine and the VC "find data" lists my bespoke stored procedure.
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CREATE PROCEDURE dbo.dt_getBieUsers
AS
select * from dbo.emailuserlink
GO
When I test it using query analyser, it returns 3 records each with the two fields I expect - user and email address.
I drag the model onto the workspace in VC and create an input form ( with just a submit button ). i drag the result port out to create a table. This has no fields in it.
I build and deploy as flex and the app runs, I click the submit button and SUCCESS! I get 3 records in my table each with 2 fields. The data is all correct. The problem with this is the fields are determined at runtime it seems.
I go back to the table and add 2 columns "email" and "address".
i build and deploy and run the app. Again I get 3 records, but this time the contents of all of the rows is not data, but "email" and "address". The data has been replaced by the header texts in all of the rows.
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The JDBC connection I am using has a connection URL of jdbc:sap:sqlserver://localhost;DatabaseName=BIEUSERS
and a driver class of com.sap.portals.jdbc.sqlserver.SQLServerDriver
Can anyone solve my wierd problems?
Cheers
Richard

Hi Richard,
After you drag and drop the data service, right click on it and choose "Test data service". Then click on "Execute" and after you see the result on the right, click on "Add fields" button (inside the same window). Now you'll see that the fields are on the tabel. This is required only for JDBC data services, since this data (how the resultset is built) is not know in DT and it needs to be run firest - then analysed and only then you have to add the fields to the table).
Regards,
Natty

Problem with jdbc:odbc returning incorrect number of rows.

Hello,
Am sure i have done something stupid, but i have an issue with jdbc:odbc ....
It is a simple sceanrio that i have coded umpteen times before ...
I have the following ....
1. Connection to DB2 on an IBM i5 (I apologise for not using native drivers from jt400.jar, but i had an ODBC code example and was in a rush - no excuse i know)
2. Statement object created from connection above
3. A string with my SQL in it
4. A result set for the results.
These are created as follows:
Class.forName( "sun.jdbc.odbc.JdbcOdbcDriver");
con = DriverManager.getConnection(ODBCSource, userID, password);
if (con == null) {
// error handling not relevant here
} else {
Statement s = con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE);
String SQL = "select * from table";
ResultSet rs = s.executeQuery(SQL);
i then try to loop ....
while (rs.next() )
// stuff
however, i only ever get one result .... if i stick in the check for isLast, the first loop hits this check, i get my little status message, and the loop ends.
while (rs.next() )
if (rs.isLast() )
System.out.println("I am on last record");
BUT if i run the SQL
"select count(*) from table" ... i get a count of 148 !!
I tried setting the FetchSize through setFetchSize(), but made no difference.
This is running on a JBoss server 4.2.1GA, JDK is "jdk1.6.0_02" .... i have a suspicion that this may be a JBoss specfic issue, as this exact code runs just fine on the Domino platform that it was originally on, if this is the case, i apologise for wasting everyones time .... but would still appreciate any pointers you can give me.
Cheers

Hello,
Thanks for the reply, I am not sure i follow what you are saying.
I only mentioned JBoss as it is the application server that we have deployed to and because the orignal code ran fine on a Domino server, I will take your advice and try to run it through in debug rather than running actually on the application server.
Am i incorrect in my assumption that if "select count(*) from table" gives a count of 148, i should expect 148 records in a result set created from "select * from table" ? This is all rather new to me so i apologise if this is incorrect, I'd love to know why this is incorrect so i dont make similar mistakes in future.
Also, If i run this same code on the previous platform, i get 148 iterations of the code contained within
while (rs.next() ) { ... }
When the war file is deployed to JBoss, the same SQL statement gives a result set that only iterates once for
while (rs.next() ) { ... }
The previous platform as I say was domino, but it was running as a lotus notes java agent (despite not using any notes documents etc) as it happened to be where the web pages that call this process were located. It is possible that some of the main code has changed as I had cut and paste the code into a servlet using MyEclipse, but i have double checked the bit that does this SQL request and it is identical
To complete the picture, the new servelt is then called from the action tag on the submit form on a JSP, when it ends the servlet redirects via the requestdispacher to success or failure jsp pages depending on the outcome of the processing.
Thank you again for your help.

Problems with Vista Drivers on Satellite M100 (PSMA1E)

Hello,
I got Problems with installing the Vista Driver for the Graphic Card and the Realtek Sound Card.
I downloaded the Drivers from the Toshiba-Support Side! The Realtek Driver couldnt be installed because of some missing file! The CCC wouldnt run correct after installation! I got Vista Buisness!
Greets, kalest

I fixed the Sound Problem for myself:
The Realtek Site offers drivers for the HD-Soundchip. I installed them and now i got HD Support on Vista!
The Problem with the Cata.Control Center still exists!
Greets, kalest

Problem with JDBC

Hi, sorry but in other forum nobody answer my question.
the probles is using JDBC 2.0, my cod is:
Statement c = conn.createStatement();
Statement =conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_UPDATABLE);
ResultSet rest = n.executeQuery("select * from t_prueba");
rest.last();
rest.updateBlob("C", null);
rest.updateRow();
rest.close();c.close();conn.close();
at time to execute this code, i have this error:
java.sql.SQLException: Operaci�n no v�lida para el juego de resultados de s�lo lectura: updateBlob
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:124)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:161)
at oracle.jdbc.driver.BaseResultSet.updateBlob(BaseResultSet.java:482)
at oracle.jdbc.driver.OracleResultSet.updateBlob(OracleResultSet.java:1230)
at mypackage3.Conversor.leerImagenBase64(Conversor.java:51)
at mypackage3.Conversor.main(Conversor.java:77)
why is this problem if i using ResultSet.CONCUR_UPDATABLE in my statement.
i 'm using jdeveloper 10.1.2 whith j2se 1.4.2_04
please anyone can help me please
tanks
alex

There are numerous problems with what you posted.
1) Do you mean to use updateNull and not what you are doing?
2) As mentioned why would you not do this in an UPDATE query? Even if you get this to work arbitrary moving around in a result set that you don't even need along with bad practices like SELECT * is just bad all around.
3) Further as mentioned what you are trying to do is not supported (obviously) by your driver/database etc. Just because you ASK for a scrollable updatable cursor does not mean that you get one. You ask for one but obviously that error message says that the cursor is read only. For the benefits of others it says (more or less) "invalid operation on read only result set : updateBlob"
Possibly you will have to use a forward only cursor to make it updateable... I don't know consult the Oracle docs. Or better yet don't do it this way.

Qosmio X300-130: Problems with some drivers in windows 7 64 bit.

I have installed normally in my laptop windows 7 64 bit version. Before I continue with my main problems I am in the forum for answers and I found this [post |http://forums.computers.toshiba-europe.com/forums/thread.jspa?messageID=232906&#232906] . How can I see if have a 32 or a 64 bit BIOS? If I have a 32 how can I make it a 64?
And now my problems:
1. I have installed a 64 bit sound drive for windows 7 of Realtek the version 6.0.1.6392 and it only recognizes the 2 speakers above the keyboard. How can I fix this?
2. My media controller manager is not responding with the drivers for windows 7 64 bit. Should I have the bluetooth on? I tried with media player and VLC and it wasn't responding. How can I fix this?

>How can I see if have a 32 or a 64 bit BIOS? If I have a 32 how can I make it a 64?
Start the notebook and press F2. Then you should be able to access the BIOS.
There you should see the version number. Furthermore you can download the latest BIOS from the Toshiba European driver page.
>1. I have installed a 64 bit sound drive for windows 7 of Realtek the version 6.0.1.6392 and it only recognizes the 2 speakers above the keyboard. How can I fix this?
The notebook supports the speakers: main x2 + tweeter x2 + woofer harman/kardon
All speakers are controlled by sound chip. So you need to install just the Realtek sound driver.
Further settings can be found in control panel Realtek HD audio manger.

Problems with jdbc drivers

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