I am trying to connect Oracle Database with JDBC Driver. I am getting java.sql.SQLException: Invalid Oracle URL specified error. Please help me in resolving the issue.
package test_connection;
import java.sql.*;
public class TestConnection {
public static void main(String[] args) {
// TODO code application logic here
try {
Class.forName("oracle.jdbc.driver.OracleDriver");
System.out.println("Driver loaded successfully ");
Connection con = DriverManager.getConnection("jdbc:oracle:thin#:localhost:1521:XE", username, password);
System.out.println("Connection established successfully ");
con.close();
} catch (Exception e) {
System.out.println(e);
}
}
}
Here is the stacktrace of the error.
run:
Driver loaded successfully
java.sql.SQLException: Invalid Oracle URL specified
BUILD SUCCESSFUL (total time: 0 seconds)
It is a typo, you misplaced the #:
"jdbc:oracle:thin#:localhost:1521:XE"
It should be:
"jdbc:oracle:thin:#localhost:1521:XE",
You can get some samples from github. Example., DataSourceSample
Related
I wanted to connect to an Oracle database using JDBC.
I installed ojdbc6.jar properly and wrote this code.
import java.sql.Connection;
import java.sql.DriverManager;
public class DBConnect {
public static void main(String[] args) {
try {
Class.forName("oracle.jdbc.OracleDriver");
String url = "jdbc:oracle:thin:#192.168.127.129:1521:helowin";
String id = "msa_checkin";
String pass = "msa0526";
Connection con = DriverManager.getConnection(url, id, pass);
if(con != null)
System.out.println("Oracle success");
else
System.out.println("Oracle failed");
}
catch(Exception e) {
System.out.println("Error");
e.printStackTrace();
}
}
}
But the output looks like this.
Error
java.sql.SQLException: Undefined Error
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:412)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:531)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:221)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:503)
at java.sql.DriverManager.getConnection(DriverManager.java:664)
at java.sql.DriverManager.getConnection(DriverManager.java:247)
at com.kinth.DBConnect.main(DBConnect.java:14)
Caused by: oracle.net.ns.NetException: Undefined Error
at oracle.net.ns.NSProtocol.connect(NSProtocol.java:385)
at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:1042)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:301)
... 7 more
I search for similar questions,but it doesn't solve my problem.
Unable to get Oracle database connection, should I format my computer?
No problem with Navicat.
Navicat Image
I tried using oracle6.jar and Oracle14.jar but neither worked.
Can you follow the instructions on this page and try to get a connection using the latest JDBC drivers?
I am new to this forum....
Iam tring to connect java project created in eclipse with oracle database xe,
I followed the procedures as descrided in the following link
https://www.youtube.com/watch?v=fMp63HsIRbc
but it didnt print the result in the eclipse console but it also didnt throw the exception as well
what should be the reason
this is my code
package dbmsoracle;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
public class Jdb {
public static void main(String[] args) {
System.out.println("jen");
try
{
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection con = DriverManager.getConnection("jdbc:oracle:thin:#localhost:1521:xe","system","murali123");
Statement st = con.createStatement();
String sql="select * from muhil";
ResultSet rs =st.executeQuery(sql);
while (rs.next())
{
System.out.println("executing ...");
System.out.println(rs.getInt(1)+" "+rs.getInt(2));
System.out.println("executed");
con.close();
}
}
catch (Exception e)
{
System.out.println("connection failed");
System.out.println(e);
}
}
i have downloaded my jdbc driver
Oracle Database 11g Release 2 (11.2.0.4) JDBC Drivers
ojdbc6.jar
Certified with JDK 8, JDK 7 and JDK 6: ......
and iam using jdk 8
Firstly check that your connection is establishing with oracle database or not. Here is the connection code try this
import java.sql.DriverManager;
import java.sql.Connection;
import java.sql.SQLException;
public class OracleJDBC {
public static void main(String[] argv) {
System.out.println("-------- Oracle JDBC Connection Testing ------");
try {
Class.forName("oracle.jdbc.driver.OracleDriver");
} catch (ClassNotFoundException e) {
System.out.println("Where is your Oracle JDBC Driver?");
e.printStackTrace();
return;
}
System.out.println("Oracle JDBC Driver Registered!");
Connection connection = null;
try {
connection = DriverManager.getConnection(
"jdbc:oracle:thin:#localhost:1521:xe","system","murali123");
} catch (SQLException e) {
System.out.println("Connection Failed! Check output console");
e.printStackTrace();
return;
}
if (connection != null) {
System.out.println("You made it, take control your database now!");
} else {
System.out.println("Failed to make connection!");
}
}
}
I have the same problem. The problem is your code doesn't catch(SQLException e). Because just catch(Exception e) will not make the exception of sql shown in the console. After doing this, you will probably find the Exception is "No suitable driver found for jdbc".
Then, either you can download the mysql-connector-java and add it to your lib, or if your project is Maven, you can just add dependency in your pom file.
After you used Sql+ for entering database, commit the table. Enter 'commit'(without quotes) on the terminal or either close your Sql+ terminal. In your case, you must have closed the terminal after you changed your id from 24, 253 to 1, 2. That is why it ran properly. Got nothing to do with id starting from 1
first of all go and check if your table has any data or not. It seems you just created this table 'muhil' before writing the above code. i'm pretty sure You must have entered some data as well in your new table. Just make sure you have Committed your transaction in the MYSQL Workbench. Just commit it and try to run your code in eclipse again.
I'm working on a program for fun but the MySQL driver and connection code isn't working properly I got the error
Error: no suitable driver found
MeanWhile my code contains the Class.forName("com.mysql.jdbc.Driver"); line. I have the newest MySQL jar file in my class path. any suggestions I could try to fix the problem
private void connect() {
try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
con = DriverManager.getConnection(URL,user,pass);
stmt = con.createStatement();
} catch (Exception e) {
error = true;
e.printStackTrace();
}
}
Your issue is in the syntax of the URL which is not correct you forgot the colon after mysql, it should be jdbc:mysql://... for more details about the syntax of the URL in case of mysql please refer to this web page
I'm trying to connect my DB with a Java Application i'm creating. What I got so far:
public class DBConnect {
public void DBConnect() {
try {
DBConnect DBConnect = null;
String url = "jdbc:mysql://localhost:3306/ähs_system";
String uName = "**";
String uPass = "**";
// Connection conn = DriverManager.getConnection(url, uName, uPass);
System.out.println("DB Connected");
}
catch (Exception Err) {
System.out.println("Error while connecting: " + Err.getMessage());
System.exit(0);
}
}
}
It's a runnable code although i'm still able to run the code without any error messages if I change my uName and/or Upass. So based on that information i'm gonna say that it's not actually connecting to the database at all...
Anyone with a few tips or tricks I can use?
I've loaded the DB in services and I am able to reach it and add data and run other SQL commands within netbeans but that's basically it. I've also loaded the mysql-connector-java-5.1.35 driver.
Run Code:
public static void main(String args[]) {
try {
DBConnect DBConnect = new DBConnect ();
DBConnect.DBConnect();
}
catch (Exception e){
System.out.println("Cannot connect to DB. Error: " + e.getMessage());
}
Let me know if you need any furthur information!
Updating property file: C:\Users\Johan\Documents\NetBeansProjects\KiltenRos\build\built-jar.properties
Compiling 1 source file to C:\Users\Johan\Documents\NetBeansProjects\KiltenRos\build\classes
C:\Users\Johan\Documents\NetBeansProjects\KiltenRos\src\kiltenros\DBConnect.java:23: error: incompatible types: java.sql.Connection cannot be converted to kiltenros.Connection
Connection conn = DriverManager.getConnection(url, uName, uPass);
1 error
C:\Users\Johan\Documents\NetBeansProjects\KiltenRos\nbproject\build-impl.xml:923: The following error occurred while executing this line:
C:\Users\Johan\Documents\NetBeansProjects\KiltenRos\nbproject\build-impl.xml:263: Compile failed; see the compiler error output for details.
BUILD FAILED (total time: 0 seconds)
the error log is clear
java.sql.Connection cannot be converted to kiltenros.Connection
it seems that you imported the wrong class in the beginning of your class
DriverManager.getConnection(url, uName, uPass) return you instance of java.sql.Connection.
btw, change your local variable DBConnect to dbConnect so it won't has the same name as your class DBConnect and it will follow the java convention (lowercase on 1st letter of a variable)
I've very little experience with MySQL, but I avoid using "ä" in a database name. Perhaps, the underscore isn't allowed.
As per your stacktrace it seems you have not imported the correct Connection class. Delete the Connection file in your project and import java.sql.Connection.
The problem seemed to be a corrupted rs2xml.jar file. Once I reloaded it and it worked.
I have a problem with connecting my java and mysql database was working fine yesterday but now is not working here is my code.
public static void main(String[] args) {
try
{
Class.forName ("com.mysql.jdbc.Driver");
}
catch (ClassNotFoundException e)
{
System.out.println ("Could not load the driver");
}
String user, pass, host, database;
user = "Michael";
pass = "Blaine22";
host = "localhost";
database = "maintenance_work";
Connection conn = DriverManager.getConnection
("jdbc:mysql://"+host+":3306/"+database, user, pass);
conn.setAutoCommit(false);
//Menu code:
appSchoolMaintenance newWork = new appSchoolMaintenance();
newWork.statement1(); // opens the start method
}
Add MySQL JDBC driver (you can get it here: http://dev.mysql.com/downloads/connector/j/) to application's classpath and remove unnecessary piece of code:
try
{
Class.forName ("com.mysql.jdbc.Driver");
}
catch (ClassNotFoundException e)
{
System.out.println ("Could not load the driver");
}
You can try to connect directly with MySQL JDBC driver
com.mysql.jdbc.Driver driver = new com.mysql.jdbc.Driver();
Connection conn = driver.
connect("jdbc:mysql://localhost/test?user=root&password=root", null);
if this code does compile you are missing MySQL JDBC driver on the classpath
Started to work again - tried all the suggestions but started working again no rhyme or reason to it! thanks for the help though