Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Can't connect o Oracle Database

Posted on 2007-03-19
14
Medium Priority
?
6,003 Views
Last Modified: 2013-12-29
Hi, could anybody advise me on the issue that I got when trying to connect to Oracle? The error message that I got: Exception in thread "main" java.lang.UnsatisfiedLinkError: no ocijdbc10 in java.
library.path

I'm using the instantClient. After I set the library path to include the ocijdbc, I got another error: Exception in thread "main" java.lang.UnsatisfiedLinkError: t2cGetCharSet

My codes is as follows:
String driver = "oracle.jdbc.driver.OracleDriver";
Class.forName(driver);
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
con = DriverManager.getConnection("jdbc:oracle:oci:@DATABASENAME", USERNAME, PASSWORD);

Is there anything wrong with my codes? Please advise, thanks.
0
Comment
Question by:rospcc
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 3
  • 2
  • +2
14 Comments
 
LVL 92

Expert Comment

by:objects
ID: 18746725
looks like the drivers shared lib is not available, perhaps not installed correctly.
0
 
LVL 92

Accepted Solution

by:
objects earned 1000 total points
ID: 18746734
0
 
LVL 48

Expert Comment

by:schwertner
ID: 18747201
What is the version of Oracle?
Is it 10g?
If yes ask the DBA to ensure static registration of the service by the Listener.

his is a working example:

***********************************************************
* Reading from scot/tiger table
**********************************************************

import java.sql.*;

import oracle.jdbc.pool.OracleDataSource;

class first {
public static void main (String args []) throws SQLException {
// Create DataSource and connect to the local database
OracleDataSource ods = new OracleDataSource();
ods.setURL("jdbc:oracle:thin:@//oralin3:1521/phr7b");
ods.setUser("scott");
ods.setPassword("tiger");
Connection conn = ods.getConnection();
// Query the employee names
Statement stmt = conn.createStatement ();
ResultSet rset = stmt.executeQuery ("SELECT ename FROM emp ORDER BY ename");
// Print the name out
while (rset.next ())
System.out.println (rset.getString (1));
//close the result set, statement, and the connection
rset.close();
stmt.close();
conn.close();
}
}
0
Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 35

Expert Comment

by:johnsone
ID: 18747601
schwertner, based on the error, I don't think we are getting as far as the listener.

Here are relavent snippets of code from a working example that I have that does use instant client.

import java.sql.*;

    private Connection dbCon = null;
    private String host;
    private String user;
    private String pass;

      // Load the driver
      try {
          //Class.forName("oracle.jdbc.OracleDriver").newInstance();
          DriverManager.registerDriver(new oracle.jdbc.OracleDriver());
      } catch (Exception e) {
          throw e;
      }

      // Connect to the database
      try {
          dbCon = DriverManager.getConnection("jdbc:oracle:oci:"  + user + "/" + pass + "@" + host);
                  
      } catch(SQLException e) {
          throw e;
      }
0
 
LVL 48

Expert Comment

by:schwertner
ID: 18748101
johnsone,
every 10g installation needs immediatelly changes in the
listener.ora file. Investigation on every connection problem
begins from Listener services.
It is not a panacea, but helps in 30% of the cases.
0
 
LVL 35

Expert Comment

by:johnsone
ID: 18748406
Based on the message being loading a unsatisfied symbol in Java, I don't see how it could be anything to do with the listener.  The code has not even started if it cannot resolve all the symbols.
0
 
LVL 48

Expert Comment

by:schwertner
ID: 18748561
OK
0
 
LVL 30

Expert Comment

by:Mayank S
ID: 18750298
>> Class.forName(driver);
>> DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());

The call to registerDriver is redundant and not required.

I would also recommend trying out with the thin driver. BTW maybe that you have multiple versions of Java and so the PATH/ CLASSPATH is messed up, which is why it is unable to load the library.
0
 
LVL 30

Assisted Solution

by:Mayank S
Mayank S earned 1000 total points
ID: 18750925
Any library which has to be loaded should be contained in "java.library.path". Try printing:

System.out.println ( System.getProperty ( "java.library.path" ) ) ;

and see if it contains the directory containing that library.
0
 

Author Comment

by:rospcc
ID: 18754045
Mayankeagle, is there any disadvantage in using thin driver?
0
 

Author Comment

by:rospcc
ID: 18754047
The path of the oci driver actually appear when I executed: System.out.println ( System.getProperty ( "java.library.path" ) ) ;
0
 
LVL 92

Expert Comment

by:objects
ID: 18754052
no downside I'm aware of in using the thin driver

> The path of the oci driver actually appear when I executed: System.out.println ( System.getProperty ( "java.library.path" ) ) ;

was that the directory that contains the oci native lib?
0

Featured Post

The top UI technologies you need to be aware of

An important part of the job as a front-end developer is to stay up to date and in contact with new tools, trends and workflows. That’s why you cannot miss this upcoming webinar to explore the latest trends in UI technologies!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Checking the Alert Log in AWS RDS Oracle can be a pain through their user interface.  I made a script to download the Alert Log, look for errors, and email me the trace files.  In this article I'll describe what I did and share my script.
In this post we will learn how to make Android Gesture Tutorial and give different functionality whenever a user Touch or Scroll android screen.
This video shows how to configure and send email from and Oracle database using both UTL_SMTP and UTL_MAIL, as well as comparing UTL_SMTP to a manual SMTP conversation with a mail server.
This video shows how to copy an entire tablespace from one database to another database using Transportable Tablespace functionality.
Suggested Courses

670 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question