Cannot connect using oracle jdbc oci8 driver

Question

I am using Oracle 8.1.5 JDBC oci8 driver, but when try to connect, always got ERROR: java.lang.UnsatisfiedLinkError:make_c_state
With the same code, but change to connect with thin driver, it works fine. Pls tell me the problem. Thank you.

Answer 1

Hi,
Here is the snippet code from oracle,
// You need to import the java.sql package to use JDBC
import java.sql.*;
// We import java.io to be able to read from the command line
import java.io.*;
class JdbcCheckup
public static void main (String args [])
throws SQLException, IOException
// Load the Oracle JDBC driver
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
// Prompt the user for connect information
System.out.println ("Please enter information to test connection to the database");
String user;
String password;
String database;
user = readEntry ("user: ");
int slash_index = user.indexOf ('/');
if (slash_index != -1)
password = user.substring (slash_index + 1);
user = user.substring (0, slash_index);
else
password = readEntry ("password: ");
database = readEntry ("database (a TNSNAME entry): ");
System.out.print ("Connecting to the database...");
System.out.flush ();
System.out.println ("Connecting...");
Connection conn =
DriverManager.getConnection ("jdbc:oracle:oci8:@" + database,
user, password);
System.out.println ("connected.");
// Create a statement
Statement stmt = conn.createStatement ();
// Do the SQL "Hello World" thing
ResultSet rset = stmt.executeQuery ("select 'Hello World' from dual");
while (rset.next ())
System.out.println (rset.getString (1));
System.out.println ("Your JDBC installation is correct.");
// close the resultSet
rset.close();
// Close the statement
stmt.close();
// Close the connection
conn.close();
// Utility function to read a line from standard input
static String readEntry (String prompt)
try
StringBuffer buffer = new StringBuffer ();
System.out.print (prompt);
System.out.flush ();
int c = System.in.read ();
while (c != '\n' && c != -1)
buffer.append ((char)c);
c = System.in.read ();
return buffer.toString ().trim ();
catch (IOException e)
return "";
This code can be run without specifying a TNSNAME connection string, as the oci8 jdbc driver will take localhost as default.
OR
Only specifying the TNSNAME is enough, i.e. edit %ORACLE_HOME%\network\ADMIN\TNSNAMES.ORA file and locate the XXXXX.WORLD entry in the file. This is the TNSNAME entry referred to.
Without TNSNAME entry you can re-run,
%ORACLE_HOME%\jdbc\demo\samples\oci8\basic-samples> java JdbcCheckup
Please enter information to test connection to the database
user: system
password: manager
database (a TNSNAME entry):
Connecting to the database...Connecting...
connected.
Hello World
Your JDBC installation is correct.
Hope that helps.
Best Luck!
Senthil Babu J