Develop Reference

Java to Active Directory LDAP java.net.SocketException: Connection or outbound has closed

Good evening,
I have been facing this error for a couple of days by now, and despite looking for a solution all over the web, I coul'd fix this error.
import java.util.Hashtable;
import javax.naming.Context;
import javax.naming.NamingEnumeration;
import javax.naming.directory.Attribute;
import javax.naming.directory.Attributes;
import javax.naming.directory.BasicAttribute;
import javax.naming.directory.BasicAttributes;
import javax.naming.directory.DirContext;
import javax.naming.directory.InitialDirContext;
public class LDAPtest {
public static void main(String[] args) {
try {
String keystorePath = "C:/Program Files/Java/jdk-13.0.2/lib/security/cacerts";
System.setProperty("javax.net.ssl.keyStore", keystorePath);
System.setProperty("javax.net.ssl.keyStorePassword", "changeit");
Hashtable<String, String> ldapEnv = new Hashtable<>();
ldapEnv.put(Context.INITIAL_CONTEXT_FACTORY,"com.sun.jndi.ldap.LdapCtxFactory");
ldapEnv.put(Context.PROVIDER_URL, "ldaps://localhost:10636");
ldapEnv.put(Context.SECURITY_AUTHENTICATION,"simple");
ldapEnv.put(Context.SECURITY_PRINCIPAL,"uid=admin,ou=system");
ldapEnv.put(Context.SECURITY_CREDENTIALS,"secret");
DirContext connection = new InitialDirContext(ldapEnv);
System.out.println("Benvenuto " + connection);
NamingEnumeration enm = connection.list("");
while (enm.hasMore()) {
System.out.println(enm.next());
}
enm.close();
connection.close();
}catch(Exception e) {
e.printStackTrace();
}
}
}
This code is actually working when SSL is not tested, replacing the
ldapEnv.put(Context.PROVIDER_URL, "ldaps://localhost:10636");
with
ldapEnv.put(Context.PROVIDER_URL, "ldap://localhost:10389");
I made the setup for the LDAP server with Apache Directory Studio, and followed this tutorial here in order to get the LDAPS to work:
http://directory.apache.org/apacheds/basic-ug/3.3-enabling-ssl.html
So I made the certificate, even installed it and imported it with keytool into cacerts.
I enabled portforwarding for the chosen port (10636), but still, I'm getting this exception:
javax.naming.CommunicationException: simple bind failed: localhost:10636 [Root exception is
java.net.SocketException: Connection or outbound has closed]
at java.naming/com.sun.jndi.ldap.LdapClient.authenticate(LdapClient.java:219)
at java.naming/com.sun.jndi.ldap.LdapCtx.connect(LdapCtx.java:2795)
at java.naming/com.sun.jndi.ldap.LdapCtx.<init>(LdapCtx.java:320)
at java.naming/com.sun.jndi.ldap.LdapCtxFactory.getLdapCtxFromUrl(LdapCtxFactory.java:225)
at java.naming/com.sun.jndi.ldap.LdapCtxFactory.getUsingURL(LdapCtxFactory.java:189)
at java.naming/com.sun.jndi.ldap.LdapCtxFactory.getUsingURLs(LdapCtxFactory.java:243)
at java.naming/com.sun.jndi.ldap.LdapCtxFactory.getLdapCtxInstance(LdapCtxFactory.java:154)
at java.naming/com.sun.jndi.ldap.LdapCtxFactory.getInitialContext(LdapCtxFactory.java:84)
at java.naming/javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:730)
at java.naming/javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:305)
at java.naming/javax.naming.InitialContext.init(InitialContext.java:236)
at java.naming/javax.naming.InitialContext.<init>(InitialContext.java:208)
at java.naming/javax.naming.directory.InitialDirContext.<init>(InitialDirContext.java:130)
at Prova3.main(Prova3.java:31)
Caused by: java.net.SocketException: Connection or outbound has closed
at java.base/sun.security.ssl.SSLSocketImpl$AppOutputStream.write(SSLSocketImpl.java:1246)
at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81)
at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142)
at java.naming/com.sun.jndi.ldap.Connection.writeRequest(Connection.java:398)
at java.naming/com.sun.jndi.ldap.Connection.writeRequest(Connection.java:371)
at java.naming/com.sun.jndi.ldap.LdapClient.ldapBind(LdapClient.java:359)
at java.naming/com.sun.jndi.ldap.LdapClient.authenticate(LdapClient.java:214)
... 13 more
Thank you in advance

For Googlers:
simple bind failed errors are almost always related to SSL connection.
With nc or telnet, check whether a connection can be established between client and remote host and port.
With SSLPoke.java (a simple Java class to check SSL connection), check whether certificates are correctly imported and used, also check correct TLS version. Use something like java -Dhttps.protocols=TLSv1,TLSv1.1,TLSv1.2 -Djavax.net.debug=all SSLPoke google.com 443 > log.txt 2>&1.
Look for:
Warning: no suitable certificate found - continuing without client authentication = check whether you have set javax.net.ssl.trustStore
Fatal (HANDSHAKE_FAILURE): Couldn't kickstart handshaking = could be mismatched TLS versions
Also check whether your intermediate CA is expired

Error in connecting to AS400 DB2 server JDBC

I am trying to connect to the AS400 DB2 database using the JDBC in a java program but I am unable to connect as it is giving a SQLException stating No suitable driver found for ​jdbc:as400://192.168.1.11
Whereas I added No suitable driver found for ​jdbc:as400://192.168.1.11
I added the following libraries to my project: db2jcc_licence_cu.jar, db2jcc4.jar, jt400-6.4.jar.
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.DriverManager;
import java.sql.ResultSet;
public class ReadAllTables {
public static void main(String args[]) throws Exception {
//Class.forName ("com.ibm.as400.access.AS400JDBCDriver");
DriverManager.registerDriver(new com.ibm.as400.access.AS400JDBCDriver());
// Enable logging
// DriverManager.setLogStream(System.err);
System.out.println("Getting Connection");
Connection c = DriverManager.getConnection ("​jdbc:as400://ipaddress","username","password");
DatabaseMetaData md = c.getMetaData();
ResultSet rs = md.getTables(null, null, "%", null);
while (rs.next()) {
System.out.println(rs.getString(3));
}
}
}
This is what the error I am getting:
Getting Connection
Exception in thread "main" java.sql.SQLException: No suitable driver found for ​jdbc:as400://192.168.1.11
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at com.test.ReadAllTables.main(ReadAllTables.java:18)
Thanks in advance

You must have jt400.jar in your classpath for the AS/400 JDBC driver to work.
Version 7.10 is in Maven or download the latest from https://sourceforge.net/projects/jt400/ or copy it from IFS. The native CC driver is only used when running locally on the AS/400.
Given your current list of jars it sounds like your CLASSPATH variable is incorrect (or if you use a runnable jar, your Class-Path line in the manifest file is wrong). If you launch with RUNJVA the mechanism is different.

Connection from Selenium Java test script to MySQL database failing

I'm trying to connect to a MySQL database using the program below. Depending on how I present the connection string I get the following errors.
IP address separated from 'mysql' by ':' only:
conn = DriverManager.getConnection("jdbc:mysql:[valid ip address]/localhost:3306/[valid database name]","[valid username]","[valid password]");
SQLState: 08001
VendorError: 0
java.sql.SQLException: No suitable driver found for jdbc:mysql:[valid ip address]/localhost:3306/[valid database name]
IP address separated from 'mysql' by ':http://':
conn = DriverManager.getConnection("jdbc:mysql:http://[valid ip address]/localhost:3306/[valid database name]","[valid username]","[valid password]");
SQLState: 08001
VendorError: 0
java.sql.SQLException: No suitable driver found for jdbc:mysql:http://[valid ip address]/localhost:3306/[valid database name]
IP address separated from 'mysql' by '://':
conn = DriverManager.getConnection("jdbc:mysql://[valid ip address]/localhost:3306/[valid database name]","[valid username]","[valid password]");
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
SQLState: 08S01
VendorError: 0
In the latter instance a stacktrace provides 'Caused by: java.net.ConnectException: Connection refused: connect'
In all cases the stacktrace also indicates that the line of code setting the variable 'conn' is throwing the exception.
Note that in the program listing text within square brackets represents obfuscated code and that the brackets are not actually in the program.
My question is, do I actually have the required drivers installed or not, or is there a problem with my connection string? Could there be some other issue that I haven't thought of?
Code follows
package [package name];
import org.junit.Test;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class SQLConnectionTest
{
#Test
public void startWebDriver()
{
try
{
Class.forName("com.mysql.jdbc.Driver").newInstance();
}
catch (Exception ex)
{
System.out.println(ex.getMessage());
}
Statement stmt = null;
Connection conn = null;
ResultSet rs = null;
try
{
conn = DriverManager.getConnection("jdbc:mysql://[valid ip address]/localhost:3306/[valid database name]","[valid username]","[valid password]");
// Do something with the Connection
}
catch (SQLException ex)
{
// handle any errors
System.out.println("SQLState: " + ex.getSQLState());
System.out.println("VendorError: " + ex.getErrorCode());
ex.printStackTrace();
}
try
{
conn.close();
}
catch (SQLException e)
{
System.out.println(e.getMessage());
}
}
}
Some information on the environment:
IDE: Eclipse Luna Service Release 2 (4.4.2), Build id: 20150219-0600
jre System Library: jre1.8.0_45
MySQLConnector library: mysql-connector-java-5.1.36.jar (appears in Referenced Libraries section of Package Explorer)
I've also installed mysql-connector-java-gpl-5.1.36, jdk-8u45-windows-x64 and selenium-java-2.45.0
I'll be happy to provide any further information as required.

The connection process seems OK to me, however there's something strange in the connection URL. You have
conn = DriverManager.getConnection("jdbc:mysql://[valid ip address]/localhost:3306/[valid database name]","[valid username]","[valid password]");
which has IP address and localhost:port. This is not a valid URL, yo have to remove either the localhost or the IP address:
conn = DriverManager.getConnection("jdbc:mysql://[valid ip address]:3306/[valid database name]","[valid username]","[valid password]");
or
conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/[valid database name]","[valid username]","[valid password]");
That should do the trick.

informix jdbc stuck connecting

I'm trying to connect to a Informix database server with jdbc using the standard way :
connection = DriverManager.getConnection("jdbc:informix-sqli://"+ip+
/"+sid+":INFORMIXSERVER="+server+";user="+user+";password="+pass+"");
But it keeps trying to connect and does not throw a error message (I suppose it tries to connect because it does not show anything). I'm using IBM Informix driver 4.10.00.1534 and Java 1.7.
I have been using this method to connect to Informix servers until now, in fact it only fails with one server. I can connect to this server through Informix clients with odbc but it keeps failing with jdbc with no error message.
Is there any method to verbose the jdbc connection? Any suggestion about why it fails?
UPDATE: The sqlidebug trace:
C->S (4)
SQ_VERSION
SQ_EOT
S->C (14)
SQ_VERSION
"7.31.TD6" [8]
SQ_EOT
C->S (66)
SQ_INFO
INFO_ENV
Name Length = 12
Value Length = 8
"DBTIME"="%d/%M/%Y"
"DBTEMP"="/tmp"
"SUBQCACHESZ"="10"
INFO_DONE
SQ_EOT
S->C (2)
SQ_EOT
C->S (16)
SQ_DBOPEN
"database" [8]
NOT EXCLUSIVE
SQ_EOT
S->C (28)
SQ_DONE
Warning..: 0x15
# rows...: 0
rowid....: 0
serial id: 0
SQ_COST
estimated #rows: 1
estimated I/O..: 1
SQ_EOT
C->S (78)
SQ_PREPARE
# values: 0
CMD.....: "select site from informix.systables where tabname = ' GL_COLLATE'" [65]
SQ_NDESCRIBE
SQ_WANTDONE
SQ_EOT
And the jdbctrace.log says:
trying com.informix.jdbc.IfxDriver
SQLWarning: reason(Database selected) SQLState(01I04)
SQLWarning: reason(Float to decimal conversion has been used) SQLState(01I05)
SQLWarning: reason(Database has transactions) SQLState(01I01)
SQLWarning: reason(Database selected) SQLState(01I04)
SQLWarning: reason(Database has transactions) SQLState(01I01)
SQLWarning: reason(Database selected) SQLState(01I04)

Try to run code that connects do Informix database but also shows full exception info and create trace files. One trace file is for JDBC, one is for Informix. Change URL to database, username and password, and run it. You will probably see the problem on screen or in trace file:
import java.io.FileWriter;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
class informix_trace
{
public static void main(String[] args)
{
try
{
Class.forName("com.informix.jdbc.IfxDriver");
FileWriter fwTrace = new FileWriter("c:\\JDBCTrace.log");
PrintWriter pwTrace = new PrintWriter(fwTrace);
DriverManager.setLogWriter(pwTrace);
String debug_url = "SQLIDEBUG=C:\\sqlidebug.trace";
String url = "jdbc:informix-sqli://1.2.3.4:9088/test_db:informixserver=ol_testifx;DB_LOCALE=pl_PL.CP1250;CLIENT_LOCALE=pl_PL.CP1250;charSet=CP1250;" + debug_url
Connection connection = DriverManager.getConnection(url, "user", "passwd");
Statement statement = connection.createStatement();
ResultSet resultSet = statement.executeQuery("SELECT FIRST 1 DBINFO('version','full') FROM systables;");
while (resultSet.next())
System.out.println(resultSet.getObject(1));
}
catch (Exception e)
{
e.printStackTrace();
}
}
} // class informix_trace
Informix trace file will be with some postfix (timestamp or similar info) and in my case it was something like sqlidebug.trace1391758523500.0. It is binary but you can analyze it using sqliprt utility.
Example of my session with wrong database name:
c:\>sqliprt sqlidebug.trace1391758523500.0
SQLIDBG Version 1
...
S->C (12)
SQ_ERR
SQL error..........: -329
ISAM/RSAM error....: -111
Offset in statement: 0
Error message......: "" [0]
SQ_EOT
In JDBCTrace.log I can found more interesting info (I see it also on my screen):
SQLState(IX000) vendor code(-111)
java.sql.SQLException: ISAM error: no record found.
at com.informix.util.IfxErrMsg.getSQLException(IfxErrMsg.java:413)
at com.informix.jdbc.IfxSqli.E(IfxSqli.java:3412)
at com.informix.jdbc.IfxSqli.dispatchMsg(IfxSqli.java:2324)
....
at java.sql.DriverManager.getConnection(Unknown Source)
at informix_trace.main(informix_trace.java:20)
getConnection failed: java.sql.SQLException: No database found or wrong system privileges.
(I have translated it from Polish so it can be little different)

My suggestion is to:
build ConnectString and show us its full content, this way we will see if in ip there is only IP address or if it is with port number
instead of adding username and password to ConnectString use 3 parameter version of getConnection() just like:
getConnection("jdbc:informix-sqli://169.0.5.10:9088/test_db:informixserver=ol_test;DB_LOCALE=pl_PL.CP1250;CLIENT_LOCALE=pl_PL.CP1250;charSet=CP1250", username, password)
(of course set your own locale instead of my Polish locale)
To spy network traffic use tools like Wireshark. Start capturing ip traffic to your Informix database. In my case Wireshark rule is:
ip.addr == 169.0.5.10
If I set up wrong IP Wireshark will display "Destination unreachable".
You can also see someting using netstat:
c:\>netstat -an | grep 9088
TCP 169.0.1.126:4295 169.0.5.10:9088 TIME_WAIT
It was when my application stopped working.
In case of error (wrong IP port) I see:
c:\>netstat -an | grep 9089
TCP 169.0.1.126:4398 169.0.5.10:9089 SYN_SENT

IBM says that: From version 3.00.JC1 of IBM® Informix® JDBC Driver onwards, debug drivers are no longer shipped.
Informix JDBC Driver now supports SQLIDEBUG. You no longer need to set values for TRACE, TRACEFILE or PROTOCOLTRACE, PROTOCOLTRACEFILE. You only need to set SQLIDEBUG. and the page goes on to outline the steps you need to create a trace. Copying:
Set the CLASSPATH to the Informix JDBC Driver package.
c:\Infx\Java>set
CLASSPATH=C:\infx\JDBC3.00JC3\lib\ifxjdbc.jar;C:\infx\JDBC3.00JC3\lib\ifxjdbcx.jar;.
Compile simple.java
c:\Infx\Java>javac simple.java
Ensure that SQLIDEBUG is set correctly
c:\Infx\Java>grep SQLIDEBUG simple.java
conn=DriverManager.getConnection("jdbc:informix-sqli://irk:1526/sysmaster:INFORMIXSERVER=irk940;USER=informix;
PASSWORD=ximrofni;SQLIDEBUG=C:\infx\java\trace");
Note: SQLIDEBUG is set in the connection string. It points to where
the trace file will be found with a certain format i.e.
trace.xxxxxxx
Remove or move all other trace files
c:\Infx\Java>del trace*
Run java.simple
c:\Infx\Java>java simple systables syscolumns ... ...
oledbordinals
Then locate the trace file
c:\Infx\Java>dir trace* Volume in drive C has no label. Volume
Serial Number is B823-46D8
Directory of c:\Infx\Java
04/04/2006 14:12 20,560 trace1144156355642.0 1 File(s) 20,560 bytes
0 Dir(s) 4,067,995,648 bytes free
c:\Infx\Java>
You will be able to see that a trace file has been created however
you will not be able to read the file.
Send the trace file to your local technical support office for
analysis.
Of course, if you're not using Version 3.00.JC1 of the Informix drivers, ignore the above and follow a different set of instructions; again duplicated for your convenience:
To turn on tracing, specify the environment variables TRACE,
TRACEFILE, PROTOCOLTRACE, and PROTOCOLTRACEFILE in the database URL or
the property list when you establish a connection to an Informix
database or database server. TRACE can be set to one of the following
levels:
Tracing not enabled. This is the default value.
Traces the entry and exit points of methods.
Same as Level 1, plus generic error messages are also traced.
Same as Level 2, plus data variables are also traced. TRACEFILE Specifies the full pathname of the operating system file on the client
computer to which the TRACE messages are written.
PROTOCOLTRACE traces the SQLI protocol messages sent between your Java
program and the Informix database server.
Can be set to the following levels:
Protocol tracing not enabled. This is the default value.
Traces message IDs.
Same as Level 1, plus the data in the message packets are also traced. PROTOCOLTRACFILE specifies the full pathname of the operating
system file on the client computer to which the PROTOCOLTRACE messages
are written.
Hope that helps

try different jdbc version
check NETTYPE configuration parameter and compare it with current number of informix sessions
dump java thread states (kill -3 ) when jdbc connection hangs

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import com.informix.*;
public class DBConnect {
static String url="jdbc:informix-sqli://host_name:port/database_name:INFORMIXSERVER=server;user=username;password=password";
public static void main(String [] args){
try {
Class.forName("com.informix.jdbc.IfxDriver");
}catch (Exception e){
System.out.println("ERROR: failed to load Informix JDBC driver.");
e.printStackTrace();
return;
}
try{
DriverManager.registerDriver((com.informix.jdbc.IfxDriver)Class.forName("com.informix.jdbc.IfxDriver").newInstance());
}catch(Exception ex){
System.out.println("Driver is not Registered");
}
try{
Connection conn = DriverManager.getConnection(url);
System.out.println("Connection Successful");
}catch (SQLException e){
System.out.println("ERROR: failed to connect!");
System.out.println("ERROR: " + e.getMessage());
e.printStackTrace();
return;
}
}
}
For more info go through [this book] (http://www.cursor-distribution.de/aktuell.11.70.xC6/documentation/ids_jdbc_bookmap.pdf)

The problem I encountered was that Informix was listening on local IPv6 address on port 7360, command netstat -a was displaying this format :
TCP [feab::11ab:78ab:efab:8aab%17]:7360 myhostname:0 LISTENING
Therefore my jdbc connection was always failing until I figured out I should have use the IPv6 address in the URL :
jdbc:informix-sqli://fe80::1125:78c0:ef17:8ab5%17:7360:user=informix;password=test;INFORMIXSERVER=ol_informix1210_2
You can test that the connection is working with this simple script :
/***************************************************************************
*
* Title: SimpleConnection.java
*
* Description: Demo a connection to a server (no database specified)
*
* An example of running the program:
*
* java SimpleConnection
* 'jdbc:informix-sqli://myhost:1533:user=<username>;password=<password>'
*
* Expected result:
*
* >>>Simple Connection test.
* URL = "jdbc:informix-sqli://myhost:1533:user=<username>;password=<password>"
* >>>End of Simple Connection test.
*
***************************************************************************
*/
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class SimpleConnection {
public static void main(String[] args) {
if (args.length == 0) {
System.out.println("FAILED: connection URL must be provided in order to run the demo!");
return;
}
String url = args[0];
String testName = "Simple Connection";
Connection conn = null;
System.out.println(">>>" + testName + " test.");
System.out.println("URL = \"" + url + "\"");
try {
Class.forName("com.informix.jdbc.IfxDriver");
} catch (Exception e) {
System.out.println("FAILED: failed to load Informix JDBC driver.");
}
try {
PrintWriter out = new PrintWriter(System.out, true);
DriverManager.setLogWriter(out);
conn = DriverManager.getConnection(url);
} catch (SQLException e) {
System.out.println("FAILED: failed to connect!");
}
try {
conn.close();
} catch (SQLException e) {
System.out.println("FAILED: failed to close the connection!");
}
System.out.println(">>>End of " + testName + " test.");
}
}

getting class not found exception

Hi friends i am facing the following error while trying to connect to a database through java code:
Exception in thread "Main Thread" java.lang.ClassNotFoundException: oracle.jdbc.OracleDriver
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:169)
at com.example.model.Driver.main(Driver.java:13)
My java code is:
package com.example.model;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class Driver {
public static void main(String args[]) throws ClassNotFoundException,
SQLException {
Class.forName("oracle.jdbc.OracleDriver");
// or you can use:
// DriverManager.registerDriver(
// new oracle.jdbc.driver.OracleDriver());
Connection conn = DriverManager.getConnection(
"jdbc:oracle:thin:#127.0.0.1:1521:ORCL", "scott", "tiger");
Statement stmt = conn.createStatement();
ResultSet rset = stmt.executeQuery("select * from customer");
while (rset.next())
System.out.println(rset.getString(1));
rset.close();
stmt.close();
conn.close();
}
}
As per i came to know it could be due to class path issue but don't know how to resolve it.
I set my class path to
C:\bea\user_project\workspace\wlserver_10.3\server\ext\jdbc\oracle\11g\ojdbc5.jar;
I am using weblogic 10.3 workspace and weblogic 10.3 server.

The java.lang.ClassNotFoundException: oracle.jdbc.OracleDriver definitely means that the mentioned class is not on the class path. And because ojdbc5.jar has it, the whole question is: "how did you set your classpath"?
Here is what I get on my machine using your code (using the default package):
$ cat > Driver.java
...
$ javac Driver.java
$ java -cp /home/pascal/opt/Oracle/Middleware/wlserver_10.3/server/ext/jdbc/oracle/11g/ojdbc5.jar:. Driver
Exception in thread "main" java.sql.SQLException: The Network Adapter could not establish the connection
at oracle.jdbc.driver.SQLStateMapping.newSQLException(SQLStateMapping.java:70)
at oracle.jdbc.driver.DatabaseError.newSQLException(DatabaseError.java:131)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:197)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:525)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:413)
at oracle.jdbc.driver.PhysicalConnection.(PhysicalConnection.java:508)
at oracle.jdbc.driver.T4CConnection.(T4CConnection.java:203)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:33)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:510)
at java.sql.DriverManager.getConnection(DriverManager.java:582)
at java.sql.DriverManager.getConnection(DriverManager.java:185)
at Driver.main(Driver.java:15)
Caused by: oracle.net.ns.NetException: The Network Adapter could not establish the connection
at oracle.net.nt.ConnStrategy.execute(ConnStrategy.java:328)
at oracle.net.resolver.AddrResolution.resolveAndExecute(AddrResolution.java:421)
at oracle.net.ns.NSProtocol.establishConnection(NSProtocol.java:634)
at oracle.net.ns.NSProtocol.connect(NSProtocol.java:208)
at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:966)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:292)
... 7 more
Caused by: java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
at java.net.Socket.connect(Socket.java:529)
at java.net.Socket.connect(Socket.java:478)
at java.net.Socket.(Socket.java:375)
at java.net.Socket.(Socket.java:189)
at oracle.net.nt.TcpNTAdapter.connect(TcpNTAdapter.java:127)
at oracle.net.nt.ConnOption.connect(ConnOption.java:126)
at oracle.net.nt.ConnStrategy.execute(ConnStrategy.java:306)
... 12 more
The driver is found (I get an exception because I'm not running any Oracle server but this is another story).

I will try to put it in the weblogic's lib folder... and restart the server, so you will be sure that it is a classpath problem...
You should download the oracle drivers from oracle and put the .jar file in the project's CLASSPATH...
You can download it at Oracle's drivers download page