MySql JDBC connection classdef not found

Hello there i am currently trying to connect a mysql database to my project. I am using Jbuilder5 enterprise . Currently i have tables setup using MySQL and i can connect to them using the database pilot. Yet when i try to access the database using java code i get a classdefnot found at event dispatch. Can anyone tell me where i am going wrong?

No, don't put that JAR or any other in that directory. That's for language extensions (e.g., packages that begin with "javax") only.
The MySQL JAR should be closer to your class files, IMO. Then you have to add it to the CLASSPATH according to JBuilder's conventions.
I use a standard directory structure for all my apps. At the top level is a directory for the application. Under a directory named "source" where I put all the code that comes out of the version control system. Under that I'll have different directories (e.g., "java" for Java source files, "lib" for 3rd party JARs like your MySQL JDBC JAR, etc.)
I create another directory "build" under the application directory where all the generated stuff goes, like .class files, javadocs, JUnit reports, etc.
This lets me use a common Ant build file to build my apps and keeps everything together. I just all all the JARs in my "lib" directory when I compile the code. I'd recommend organizing your apps this way, too.
MOD

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Error oracle.sql.* and oracle.jdbc.driver.* not found when using oracle as a database

I am using oracle as database and weblogic 4.5. I have copied the classes12.zip file in lib directory of weblogic. I am getting the error that oracle.sql.* and oracle.jdbc.driver.* not found when i am importing these packages in a jsp file. what i need to do to import oracle driver packages?I put it in the classpath also.
Please Advice!
Thanks in advance
AnuPama

Hi Anupama,
First of all I would be surprised if you would not like to use the connection pooling feature of weblogic (in which case you might not be needing the import the classes directly), and would like to open direct connections to your database. Anyways for doing that I would recommend you to check out the readme doc that ships
along with the jdbc oracle (classes12.zip etc). I am giving an excerpt over here:
These are a few simple things that you should do in your JDBC program:
1. Import the necessary JDBC classes in your programs that use JDBC.
For example:
import java.sql.*;
import java.math.*;
2. Register the Oracle driver before before calling other JDBC APIs.
(This is not needed if you are using the JDBC Server-side Internal
Driver because registration is done automatically in the server.)
To register the Oracle driver, make sure the following statement
is executed at least once in your Java session:
DriverManager.registerDriver(
new oracle.jdbc.driver.OracleDriver());
3. Open a connection to the database with the getConnection call.
Different connection URLs should be used for different JDBC
drivers. The following examples demonstrate the different URLs.
For the JDBC OCI8 Driver:
Connection conn = DriverManager.getConnection(
"jdbc:oracle:oci8:@<database>",
"scott", "tiger");
where <database> is either an entry in tnsnames.ora or a SQL*net
name-value pair.
For the JDBC Thin Driver, or Server-side Thin Driver:
Connection conn = DriverManager.getConnection(
"jdbc:oracle:thin:@<database>",
"scott", "tiger");
where <database> is either a string of the form
<host>:<port>:<sid> or a SQL*net name-value pair.
For the JDBC Server-side Internal Driver:
Connection conn = DriverManager.getConnection(
"jdbc:oracle:kprb:");
Note that the trailing ':' character is necessary. When you use
the Server-side Internal Driver, you always connect to the
database you are executing in. You can also do this:
Connection conn
= new oracle.jdbc.driver.OracleDriver().defaultConnection();
Hope this helps,
Thanks,
Anupama wrote:
I am using oracle as database and weblogic 4.5. I have copied the classes12.zip file in lib directory of weblogic. I am getting the error that oracle.sql.* and oracle.jdbc.driver.* not found when i am importing these packages in a jsp file. what i need to do to import oracle driver packages?I put it in the classpath also.
Please Advice!
Thanks in advance
AnuPama--
Apurb Kumar

JDBC driver - Class oracle.jdbc.driver.OracleDriver not found.

Greetings:
When I tried to compile an test script (as attached below) to test the driver, I always ended up with the following error message:
....java:17: Class oracle.jdbc.driver.OracleDriver not found.
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
Could somebody shine some light on it? I would very much appreciate it.
By the way, I have an Oracle DBMS (8.1.7) with jre1.1.7. My Java is jdk1.2 and the driver is ocijdbc8.dll
Wil
*************** The test script *************
import java.sql.*;
class Users
public static void main (String args [])
throws SQLException, ClassNotFoundException
// Load the Oracle JDBC driver
Class.forName ("oracle.jdbc.driver.OracleDriver");
// Connect to the database
// You can put a database name after the @ sign in the connection URL.
Connection conn =
DriverManager.getConnection ("jdbc:oracle:oci8:@US10", "QM24202E", "QM24202E");
// Create a Statement
Statement stmt = conn.createStatement ();
// Select ... table
ResultSet rset = stmt.executeQuery ("select USERID from USERS");
// Iterate through the result and print the ... names
while (rset.next ())
System.out.println (rset.getString (1));

check out what thomas Fly wrote on another discussion forum about connection with JDBC, i tried it and i haven't gotten it
to work yet but at least i don't have the "... not found" error,
you should try it too, and i think it's good to tell you that i
still haven't installed the oracle client on my windows Me PC.
Hope this help you
This may help also... I have Oracle installed on a Linux PC at 192.168.1.4 on my LAN, listening on port 1521. I can connect from another PC (Linux / Windows ME dual boot, though running Windows at the time of this experiment) using the following program:
import java.sql.*;
public class sqlLookup {
public static void main(String[] args) throws SQLException, ClassNotFoundException {
String dbUrl = "jdbc:oracle:thin:@192.168.1.4:1521:ORA8";
String user = "thomasfly";
String password = "maverick";
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
Connection c = DriverManager.getConnection(dbUrl, user, password);
Statement s = c.createStatement();
// SQL code:
ResultSet r = s.executeQuery("select * from members");
while(r.next()) {
// Capitalization doesn't matter:
System.out.println(r.getString("Name") + ", " + r.getString("id") + ": " + r.getString("email") );
s.close(); // Also closes ResultSet
I downloaded classes12.zip for Oracle 8.1.7 and put it into the C:\Windows directory, and mounted C:\Windows\classes12.zip in Forte for Java (equivalent to adding it to the classpath if I were running the program from a DOS window, rather than in Forte).
ORA8... capitalization may be important... is the name of my database, which may be found in the tnsnames.ora file in $ORACLE_HOME/resources.
The query gets the Name, id, and email fields from the table "members" in the database.
This is just a barebones program, and each time it's run, the Oracle listener has to be stopped and restarted before the program can be successfully run again.

Create a public synonym for a db link - "Connection desccriptor not found".

I want to create a public synonym for a db link.
The existing db link name is tst.world ( which is in db links table and is working fine).
I created the following db link using the following command:
create public synonym "syn.world" for "tst.world";
It created the synonym successfully.
If I try the following, it throws error "Connection desccriptor not found".
select * from [email protected];
It says "Connection desccriptor not found".
Any suggestions.
Thanks in Advance.

Well then, lookup the Documentation on the CREATE SYNONYM statement in the SQL Language Reference manual.
The documentation lists the types of objects which you can create synonyms for.
You can create synonyms for objects referenced across DBLinks.
You cannot create synonyms for DBLinks.
Hemant K Chitale

Mysql show result-- com.mysql.jdbc.NotImplemented: Feature not implemented

Hello,
I have set a database and I am trying to show a simple select.I have this code for example:
String SQL = "SELECT * FROM DatabaseName.tableName";
                     stmt = (Statement) conn.createStatement();
                     rs = (ResultSet) stmt.executeQuery(SQL);
                     while (rs.next()) {
                        System.out.println(rs.getArray(3));
                     }And all I get is an exception:
com.mysql.jdbc.NotImplemented: Feature not implemented
at com.mysql.jdbc.ResultSet.getArray(ResultSet.java:1043)
Is this right?I have tried other methods but I get the above.How to show the result.
It is in 3rd column double value.

Are you guys always this cranky? Who's cranky? It's important for the integrity of these forums that misinformation isn't left lying around uncorrected. If that makes you cranky, try elsewhere where the standards may not be so high.
I posted something that works, now is it exactly as whatever getArray does?No.
Probably not.Just a minute. You said here that 'the work around code' is something like this, and here that 'it actually is the same result'. You were mistaken. Twice. You are now in the process of changing your mind. Let me help you. It is definitely not exactly what getArray() does. Not even close. Completely different. getArray() gets an array directly from the database from a single column in the current row in the result set. Your code constructs an array from a single column across all rows in the result set. There is no comparison.
What's wrong with helping outWhat's wrong with getting it right? What's wrong with pointing out an error? What's wrong with admitting when you're mistaken? What's wrong with alerting the OP not to mention all future readers of this thread that it contains misinformation? What's wrong with you finding out that you were wrong?
and posting what you think it should say
rather than just being negative?As a matter of fact nobody was 'just negative'. I pointed out exactly what the difference between your code and getArray() is. But by 'negative' do you mean pointing out that you were wrong? Nothing wrong with that.

I can't access to my ipad In MacBook Air. Error shows this device no loger connected or error shows that no response from divice and iTunes can't connected or not found divice, what's the problem? I reset my ipad but no response

I can't access to my ipad In MacBook Air. Error shows this device no loger connected or error shows that no response from divice and iTunes can't connected or not found divice, what's the problem? I reset my ipad but no response

Hi ..
Which OS X is installed on your Mac ?
Click the Apple () menu top left in your screen. From the drop down menu click About This Mac. The version is noted there.
Make sure your Mac OS X software is up to date.
Disconnect the iPad from your Mac.
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Error MySQL #2002 connection could not be made etc from phpMyAdmin

Error MySQL #2002 connection could not be made etc from phpMyAdmin
I am just seting up Adobe Flash Builder 4.5 for PHP, Zend Server, MySQL and phpMyAdmin.
On attempting The Tutorial Build your first Mobile PHP project I am getting this error.
Can anybody help please ?

Just thought I would add that I did every test the help files suggest, no firewall etc.
Strange thing is that after the majority downloaded I had about 55 apps left that could not be updated because of the network connection that could not be made, I downloaded them manually instead of clicking 'yes please do download them all'.
I still came across a few that gave me the msg that an connection could not be made but when I skipped them and came back later to try again it did download. Took some time but I now have them all up to date.
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cheers,
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Package (import oracle.jdbc.driver.*) not found -----URGENT--------

Hi All,
i've been using oracle thin driver for oracle 9i server since a long. but now it gives error like
package import oracle.jdbc.driver.* not found
it seems some problem in classpath.
but i've inludeed classes111.zip/classes12.zip to classpath and with this was working fine. dunno what's the problem . kindly mail me at the earliest to:[email protected]
also i'm working with Tomcat server.
to run the servlet i don't want to type the absolute url like
http://localhost:8080/servlet/test rather http://localhost/test .so how to config it . can ne one tell me asap.
with thanx abd rgds
Sayed
so can u tell me

1. Copy classes12.zip to %TOMCAT_HOME\common\lib
2. Go to %TOMCAT_HOME\common\lib dir, rename classes12.zip to classes12.jar
I think someone else has reply same problem before, next time you can do a search before post your problem.

MySQL -- JDBC Connection help !!!

Hi everybody...Well I have MySQL Server and Java, I get the JDBC and tried this:
import java.sql.*;
public class JdbcE {
public static void main(String args[]) {
Connection con = null;
try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
con = DriverManager.getConnection("jdbc:mysql://localhost/test", "user", "pass");
if(!con.isClosed())
System.out.println("Successfully connected to MySQL server...");
} catch(Exception e) {
System.err.println("Exception: " + e.getMessage());
} finally {
try {
if(con != null)
con.close();
} catch(SQLException e) {}
And with that code all works fine...but when I change the Host from LOCALHOST to [ROUTER IP] like this:
con = DriverManager.getConnection("jdbc:mysql://182.185.145.12/test", "user", "pass");
I got this exception:
Exception: Communications link failure due to underlying exception:
** BEGIN NESTED EXCEPTION **
java.net.SocketException
MESSAGE: java.net.ConnectException: Connection timed out: connect
STACKTRACE:
java.net.SocketException: java.net.ConnectException: Connection timed out: conne
ct
at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.ja
va:156)
at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:276)
at com.mysql.jdbc.Connection.createNewIO(Connection.java:2666)
at com.mysql.jdbc.Connection.<init>(Connection.java:1531)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java
:266)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at JdbcE.main(JdbcE.java:11)
** END NESTED EXCEPTION **
Last packet sent to the server was 16 ms ago.
I don't know how to solve it...
I have a 2wire 1700HG router, maybe it would be a problem of the firewall can anyone help me to solve this problem??

Well I sorry...I am very new in this kind of things...I just know that I have a 2wire 1700HG, I have installed MySQL Server, Java and mysql-connector-java...
When I try this in the connection statement:
con = DriverManager.getConnection("jdbc:mysql://localhost/test", "user", "test");
Everything works fine...but when I try this to connect from a remote PC
con = DriverManager.getConnection("jdbc:mysql://189.145.185.182/test", "user", "test");
This error comes out on screen:
Exception: Communications link failure due to underlying exception:
** BEGIN NESTED EXCEPTION **
java.net.SocketException
MESSAGE: java.net.ConnectException: Connection timed out: connect
STACKTRACE:
java.net.SocketException: java.net.ConnectException: Connection timed out: conne
ct
at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.ja
va:156)
at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:276)
at com.mysql.jdbc.Connection.createNewIO(Connection.java:2666)
at com.mysql.jdbc.Connection.<init>(Connection.java:1531)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java
:266)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at JdbcE.main(JdbcE.java:11)
** END NESTED EXCEPTION **
Last packet sent to the server was 16 ms ago.
I don't know what can I do :S please help!! :D

Why my MySQL JDBC Connect fail??

Dear friends:
I have following code:
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class JdbcExample2 {
public static void main(String args[]) {
    Connection con = null;
    try {
      Class.forName("com.mysql.jdbc.Driver").newInstance();
      //jdbc:mysql://host_name:port/dbname
//     con = DriverManager.getConnection("jdbc:MySQL:///test","admin", "admin");
      con = DriverManager.getConnection("jdbc:MySQL://localhost:3306/test","admin", "admin");
      if(!con.isClosed())
        System.out.println("Successfully connected to " +
          "MySQL server using TCP/IP...");
    } catch(Exception e) {
      System.err.println("Exception: " + e.getMessage());
    } finally {
      try {
        if(con != null)
          con.close();
      } catch(SQLException e) {}
}But when I run , I got following error:
Exception: com.mysql.jdbc.Driver
My question is:
[1]. when I connect to MySQL Server through mySQL Client, I got
Enter password: *****
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 18 to server version: 4.1.21-community-nt
Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
mysql>
how Can I determine MySQL Server name?? I forgot when I install, maybe MySQL is my SQL Server name
[2]. Do I need to creat a user DSN name or System DSN name for MySQL Server?? which one is best??
How to do it??
[3]. How to make above simple JDBC program runnable??
Thanks
sunny
Message was edited by:
sunnymanman

Thanks, see new errors:
C:\Project\java>java Jdbc11
Copyright 2004, R.G.Baldwin
java.sql.SQLException: Access denied for user 'admin'@'localhost' (using password: YES)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:946)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2941)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:868)
at com.mysql.jdbc.MysqlIO.secureAuth411(MysqlIO.java:3340)
at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1238)
at com.mysql.jdbc.Connection.createNewIO(Connection.java:2743)
at com.mysql.jdbc.Connection.<init>(Connection.java:1553)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:266)
at java.sql.DriverManager.getConnection(DriverManager.java:512)
at java.sql.DriverManager.getConnection(DriverManager.java:171)
at Jdbc11.main(Jdbc11.java:23)
C:\Project\java>
any idea??
here Jdbc11.java:23 is:
Connection con = DriverManager.getConnection(
url,"admin", "YES");
my userID/Password = admin/admin;
sunny
Message was edited by:
sunnymanman

External content type error: Business Data Connectivity object not found.

Hello
I have to change the external database (external system) for an external content type. The database view on the new database is exactly the same as on the old database.
After changing the external system of the external content type, this happens:
When I try to add a new item to the list, I get this error under the external data field:
"Business Data Connectivity object not found. Administrators, see the server log for more information."
Also, when I try to update the external data field, it is not possible because the buttons are grey.
When I add a new external data field to the same list, I can use the external content type. For some reason the current external data field doesn't update.
Any ideas?
Any help would be much appreciated!

Have you implemented both ‘Read List’ & ‘Read Item’ operations in your ECT?
This may be helpful -
https://sharepointcreations.wordpress.com/2014/03/13/business-data-connectivity-object-not-found/
Thanks
Ganesh Jat [My Blog |
LinkedIn | Twitter ]
Please click 'Mark As Answer' if a post solves your problem or 'Vote As Helpful' if it was useful.

Failing Connecting PHP to MySQL with HTTP 404 NOT FOUND Error

I'm using Dreamweaver CC to connect php to mySQL, and read both of these articles but still not working!
1. It keep showing me HTTP 404 NOT FOUND. But I can access MySQL by web browser so I'm sure the address and login info is correct.
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http://forums.adobe.com/thread/1238828?tstart=0
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I installed the following on my laptop which has a Windows 2000 operating system:
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- the MySql Connector/J for Java
ODBC
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TOMCAT
C:\apache-tomcat-6.0.18
I copied mysql-connector-java-5.0.8-bin.jar into:
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TOMCAT SERVER.XML
In the server.xml file under the CONF folder I entered
<Context path="/testapp" docBase="testapp" debug="0"
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<Resource name="jdbc/mysql"
auth="Container"
type="javax.sql.DataSource"
description="The connection pool will be bound into JNDI with the name
java:/comp/env/jdbc/MySQLDB">
</Resource>
<ResourceParams name="jdbc/mysql">
<parameter>
<name>factory</name>
<value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
</parameter>
<parameter>
<name>maxActive</name>
<value>10</value>
</parameter>
<parameter>
<name>maxIdle</name>
<value>5</value>
</parameter>
<parameter>
<name>driverClassName</name>
<value>com.mysql.jdbc.Driver</value>
</parameter>
<parameter>
<name>username</name>
<value>root</value>
</parameter>
<parameter>
<name>password</name>
<value>test</value>
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<name>url</name>
<value>jdbc:mysql://localhost/mysql</value>
</parameter>
</ResourceParams>
</Context>
However, when I try to run a java servlet, I am getting the following error:
SqlException: Could not connect to database
[ODBC Driver Manager] Data source name not found and no default driver specified
Class.forName("com.mysql.jdbc.Driver").newInstance();
conn = DriverManager.getConnection(“jdbc:mysql://localhost/mysql”, strUserId, strPassword);
MySql is actually installed on c:\Program Files\MySql\Mysql 5.0
What am I missing? How can I get the mySql connection to work?
Thanks,
Robin

You seem to be specifying JDBC driver while you are trying to connect to your database using ODBC,
RobinHR wrote:
<parameter>
<name>driverClassName</name>
<value>com.mysql.jdbc.Driver</value>
</parameter>
and ,
RobinHR wrote:
Class.forName("com.mysql.jdbc.Driver").newInstance();
conn = DriverManager.getConnection(jdbc:mysql://localhost/mysql, strUserId, strPassword);
*********************You would be using "sun.jdbc.jdbcodbc.Driver" rather!
Refer MySQL sample examples/documentation on how to connect to your database using ODBC
And this on how to create a DSN
Edited by: anamupota on Jan 16, 2009 8:27 AM

Report with JDBC connection does not work when they includes CommandTable

I am trying to render using the new version of Crystal report java component - CRJ a report contains Data base Fileds of type Command Table (Row Set) which seems to be not working.
when i use the previes version of crystal SDK it works fine.
after deugging the Sample CrystalHelper.java file which contains the method .changeDatasource()
i found that the DataBaseController.setLocation() method changes the CommandTable class to Table when using it on CommandTable instance and as result all the fields defined into that CommandTable were disappear.

That appears to be a known issue: Eclipse JRC: To change the JDBC connection at run time
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I get this message when I try to connect to the database while creating an EJB. I have tried adding the path to my CLASSPATH, and to adding it to the various CLASSPATHs within Sun ONE Studio. IDE_HOME is defined correctly but OracleDriver.class is still not found. Anyone know what my problem might be?
Thanks,
Michael A. Moran

Hi Sujatha,
Thanks for responding. My CLASSPATH is as follows:
madonna% echo $CLASSPATH
/export/oracle/jdbc/lib:/export/oracle/jlib:/export/oracle/jsp/lib:/export/oracle/sqlj/lib/runtime.zip:/export/oracle/oem_webstage:/export/oracle/lib/aurora_client.jar:/export/oracle/jdbc/lib/classes12.zip:/export/oracle/sqlj/lib/translator.zip:/export/oracle/sqlj/lib/runtime12.jar:/export/oracle/lib/vbjorb.jar:/export/oracle/lib/vbjapp.jar:/export/oracle/lib/mts.jar:/export/oracle/javavm/lib/aurora.zip:/export/oracle/javavm/utl/ejb/lib/vbj30ssl.jar:/export/oracle/jlib/javax-ssl-1_2.jar:/export/oracle/jlib/jssl-1_2.jar:/export/oracle/lib/servlet.jar:/export/oracle/lib/http_client.jar:/export/oracle/lib/http_server.jar:/export/oracle/oem_webstage/oracle/jdbc/OracleDriver.class:/export/oracle:/export/oracle/jdbc/lib/nls_charset12.jar
Which as you can see includes classes12.zip and /export/oracle/oem_webstage/oracle/jdbc/OracleDriver.class
I have also set all the IDE internal classpath variables to the same settings. It has no effect. I still get the same message.
Michael

MySql JDBC connection classdef not found

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