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Can't connect o Oracle Database
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.UnsatisfiedLinkE
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.UnsatisfiedLinkE
My codes is as follows:
String driver = "oracle.jdbc.driver.Oracle
Class.forName(driver);
DriverManager.registerDriv
con = DriverManager.getConnectio
Is there anything wrong with my codes? Please advise, thanks.
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.UnsatisfiedLinkE
My codes is as follows:
String driver = "oracle.jdbc.driver.Oracle
Class.forName(driver);
DriverManager.registerDriv
con = DriverManager.getConnectio
Is there anything wrong with my codes? Please advise, thanks.
Mick Barry
looks like the drivers shared lib is not available, perhaps not installed correctly.
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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.OracleDat
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:th
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();
}
}
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.OracleDat
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:th
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();
}
}
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.jd
DriverManager.registerDriv
} catch (Exception e) {
throw e;
}
// Connect to the database
try {
dbCon = DriverManager.getConnectio
} catch(SQLException e) {
throw e;
}
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.jd
DriverManager.registerDriv
} catch (Exception e) {
throw e;
}
// Connect to the database
try {
dbCon = DriverManager.getConnectio
} catch(SQLException e) {
throw e;
}
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.
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.
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.
OK
>> Class.forName(driver);
>> DriverManager.registerDriv
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.
>> DriverManager.registerDriv
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.
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ASKER
Mayankeagle, is there any disadvantage in using thin driver?
ASKER
The path of the oci driver actually appear when I executed: System.out.println ( System.getProperty ( "java.library.path" ) ) ;
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?
> 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?