Handshaking Problem ( JSP & MySql )

Dear All
I am facing the foolowing problem with mysql and servlet:
exception
javax.servlet.ServletException: Communication failure during handshake. Is there a server running on localhost:3306?
     org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:848)
     org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:781)
     org.apache.jsp.jobcard16_jsp._jspService(org.apache.jsp.jobcard16_jsp:1599)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:291)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause
java.sql.SQLException: Communication failure during handshake. Is there a server running on localhost:3306?
     com.mysql.jdbc.MysqlIO.init(MysqlIO.java:619)
     com.mysql.jdbc.Connection.createNewIO(Connection.java:1605)
     com.mysql.jdbc.Connection.connectionInit(Connection.java:1056)
     com.mysql.jdbc.Driver.connect(Driver.java:297)
     java.sql.DriverManager.getConnection(Unknown Source)
     java.sql.DriverManager.getConnection(Unknown Source)
     org.apache.jsp.jobcard16_jsp._jspService(org.apache.jsp.jobcard16_jsp:88)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:291)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

nikhil_p_chavan wrote:
Yes, there is MySql running on 3306.The exception says it is not. This can have the following (logical) causes:
1) MySQL is actually not running on 3306.
2) MySQL does not allow connections.
3) Some firewall software is blocking MySQL.
4) Some firewall software is blocking port 3306.
And in the future please don't mark the topic as answered while your actual problem is not solved. I was under the impression that it was answered right after my first reply and when you confirmed that there was no MySQL server at post 3306.

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Message was edited by:
sam_john

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4. MySQL Connector/J 5.0.4
5. JAVA_CLASSPATH
C:\Program Files\Java\jdk1.5.0\bin
6. CLASSPATH
C:\Program Files\mysql-connector-java-5.0.4
Plz consider that I have a table in my MySQL database name tab1 which has fields: name,roll,date_of_birth.
Thanx...

The error you are getting looks like a network (socket) error rather than a JDBC or MySQL problem. The error indicates that a connection cannot be negotiated from Tomcat to MySQL. Are you sure MySQL is running on your laptop? Try to telnet to the MySQL port:
(on windows, from the command prompt)
C:\>telnet localhost 3306
If this connects (the command promt screen should clear) then the problem is elsewhere, but my bet is you won't be able to connect this way either.
If you cannot connect using telnet:
1. Verify that MySQL is running on your laptop
2. Verify that it's listening on port 3306
3. Check that you don't have any local firewall apps blocking this traffic
4. Verify that you don't have any manual host configurations which mean "localhost" points somewhere else (unlikely)
If you CAN connect using telnet:
1. Verify that your connection string is correct as per the MySQL JDBC Driver documentation
2. Verify that your authentication credentials are correct (don't think it's this)
Now... for a few supplimentary notes:
You appear to be using the connection.isClosed() method to test whether you have a connection. This serves no purpose in the context you are using it as it's just a boolean which gets set when close() is called on the connection. ergo you could quite easily have a broken connection which returns "false" on an isClosed() call.
Also, it is (strictly speaking) considered a better architecture to limit your JSP code to "display logic" only. This means it is usually void of any business logic or database-related code. You should really look at something like the MVC architecture (model-view-controller). This will save you a lot of headaches in the long run. If nothing else, debugging JSPs can be a real nightmare. I recommend you look at the Struts project (Apache Jakarta). It has become the defacto standard implementation of MVC.
Good luck :)

JDBC/JSP/MySQL Code works from my local machine, but not on server

Hi there!
I've been struggling with this problem for a while.
I have a database from which I need to read and display some data on a browser. (The database is set up for remote access).
I'm using the following JSP/JDBC code to do that.
Class.forName ("com.mysql.jdbc.Driver").newInstance();
out.println("<BR> Connecting to DB...Pls. Wait <BR>");
Connection con = DriverManager.getConnection("url","user","pwd");
if(con.isClosed())
out.println("<BR><BR><BR>" +"Could NOT connect to MySQL Database...");
else out.println("<BR> CONNECTED !!! <BR>");
Statement stmt = con.createStatement();
results = stmt.executeQuery("SELECT * FROM TableName" );
When I run this of my local machine, it works fine. But when I upload it to a server, it doesn't run through. I dont get either the connected or not connected message.
I tried this piece of code that I found online to check the driver.
/*Driver d = (Driver)Class.forName("com.mysql.jdbc.Driver").newInstance();
out.println("<BR>Got a driver instance. ");
if (d.acceptsURL(url)) out.println("<BR>The driver does accept my URL");
else out.println("<BR>The driver doesn't like the URL I'm trying"); */
I ran it off the server and it worked. I got the outputs --Got a driver instance and The driver does accept my URL
I'm unable to figure out why this code can be run locally from my machine, but not from a different location. The database is NOT on my machine.
Any inouts will be really appreciated.
I'm using an Apache Tomcat container and the database is MySQL.

Just wanted to mention
The database is on another (3rd) machine.
So I have
1. My local machine
2. Database hosted on a 2nd machine
3. Place I'm moving my code to (its basically a hosting account provided by an external company)
I can access the database from my local machine. However, when I move the code over to another machine, it doesn't work.

JSP - MySQL - MS Access

I have a set of tables in MS Access database and MySQL database.
My jsp application is running with the help of Apache/Tomcat in Linux box.
I've the MM.MySQL Driver to integrate MySQL with my application.
my problem is to know how to communicate jsp with MS Access here.
I don't know how to connect jsp to MS Access in Linux.
I searched for solution and finally got an idea of using MyODBC api.
I need to import data from MS Access to MySQL using MyODBC on Linux.
Can anyone help me on how to install,configure MyODBC and import data.
or please pass any reference url.
or
please suggest me any solution for this.
Thanks
Senthil

Thats what I meant. If both (Access and MySQL) both run on Windows there should be no problem. But if MySQL is on Linux and Access is on Windows it could be.
How about setting up Mysql on Windows, going the way magnoli supposed and after that using mysqldump to export zo linux.

Jdbc connectivity problem with mySql

Hello,
Could anyone plz help me in solving this problem-
there are total 3 databases on our site. 2 are old and the 3rd one we created after we installed the new version of mysql(4.1) . Now, we can connect thru over jsp pages to the old databases but when we connect it to the new (3rd ) one it throws the following exception-
�Java.sql.SQLException: Due to underlying Exception : ArrayIndexOutOfBoundsException.44 Server connection failure during transaction. Attempted reconnect 3 times. Giving up �
Though the data in the new database is same as in the first database becoz it was just created for testing purpose.
Is this issue anything to do with the privleges in mysql .plz help........
Regards

is this problem related to privleges as i just checked my phpAdmin and there i found this warning-
�Warning: Your privilege table structure seem to be older than this MySQL version!
Please run the script mysql_fix_privilege_tables that should be included in your MySQL server distribution to solve this problem! �
plz HELP

Handshaking Problem ( JSP & MySql )

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