Oracle JDBC problem in Java/log4j

HI,
I am using log4j in my java application to log error messages using JDBCAppender to record the messages in DB tables.
I am getting this error in JDeveloper.
log4j:ERROR Failed to excute sql
java.sql.SQLException: [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified
Here is my log4j.properties file.
log4j.appender.JDBC2=org.apache.log4j.jdbc.JDBCAppender
log4j.appender.JDBC2.driver=oracle.jdbc.driver.OracleDriver
log4j.appender.JDBC2.url=jdbc:oracle:thin:@Server:port:instance
log4j.appender.JDBC2.user=user
log4j.appender.JDBC2.password=password
Note: I am able to log messages using FileAppender.
Please let me know if anybody have any solutions for this problem.
Siva.

Abirami,
This problem got solved as the static variables used for the JDBCAppender class are case sensitive.
I modifed the variables Driver and URL. Now it is working for me.
Here is the corrected code:
log4j.appender.db=org.apache.log4j.jdbc.JDBCAppender
log4j.appender.db.Driver=oracle.jdbc.driver.OracleDriver
log4j.appender.db.URL=jdbc racle:thin:server:1523 bname
log4j.appender.db.user=username
log4j.appender.db.password=password
log4j.appender.db.sql=INSERT INTO LOG VALUES ('%d %-5p -%F %m')
log4j.appender.db.layout=org.apache.log4j.PatternLayout
log4j.appender.db.layout.ConversionPattern=%d %-5p - %m
log4j.appender.db.Threshold=debug

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I am sorry but I did add those in the classpath but still getting this error:
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java.lang.NullPointerException
If I open the connection using JDeveloper wizard I can see the DB. But if running the above program in the JDev, JCreator or commandline keep on getting the error. Any help is appreciated. Thanks

How do I set the path for the Oracle Driver. ThanksI dunno. You're supposed to know where that class is (what jar it lives in). You set it up in JDeveloper in the first place, so you must have known where it is. After you know that, it's up to you to figure out how JCreator projects are set up to include jars in a project (just like JDeveloper projects do). For the command-line way, you set the classpath on the command-line arguments:
java -cp (your classpath here, which must include the jars it needs) ...

Getting error while Creating a JDBC connection from Java Class

Hi,
I am getting the exception pasted below:
Exception in thread "main" java.lang.AbstractMethodError
at JvMakeVTable(java.lang.Class) (/usr/lib/libgcj.so.5.0.0)
at JvPrepareClass(java.lang.Class) (/usr/lib/libgcj.so.5.0.0)
at JvWaitForState(java.lang.Class, int) (/usr/lib/libgcj.so.5.0.0)
at java.lang.VMClassLoader.linkClass0(java.lang.Class) (/usr/lib/libgcj.so.5.0.0)
at java.lang.VMClassLoader.resolveClass(java.lang.Class) (/usr/lib/libgcj.so.5.0.0)
at java.lang.Class.initializeClass() (/usr/lib/libgcj.so.5.0.0)
at oracle.jdbc.driver.OracleStatement.executeQuery(java.lang.String) (Unknown Source)
at oracle.jdbc.dbaccess.DBAccess.setNlsParamsClient(oracle.jdbc.driver.OracleConnection) (Unknown Source)
at oracle.jdbc.ttc7.TTC7Protocol.initNls(oracle.jdbc.driver.OracleConnection) (Unknown Source)
at oracle.jdbc.driver.OracleConnection.OracleConnection(oracle.jdbc.dbaccess.DBAccess, java.lang.String, java.lang.String, java.lang.String, java.lang.String, java.util.Properties) (Unknown Source)
at oracle.jdbc.driver.OracleDriver.getConnectionInstance(java.lang.String, java.lang.String, java.lang.String, java.lang.String, java.lang.String, java.util.Properties) (Unknown Source)
at oracle.jdbc.driver.OracleDriver.connect(java.lang.String, java.util.Properties) (Unknown Source)
at java.sql.DriverManager.getConnection(java.lang.String, java.util.Properties) (/usr/lib/libgcj.so.5.0.0)
at java.sql.DriverManager.getConnection(java.lang.String, java.lang.String, java.lang.String) (/usr/lib/libgcj.so.5.0.0)
The code raising this error is :
try
               Class.forName("oracle.jdbc.driver.OracleDriver");
          catch (Exception Exp)
               System.out.println("Error while getting the class : "+Exp);
try
               String url = "jdbc:oracle:thin:@hostname:port:SID";
               String user = "apps";
               String password = "password";
               con = DriverManager.getConnection(url,user,password);
catch (Exception ex)
               System.err.println("SQLException: " + ex.getMessage());
Any help in this is appreciated.
Regards
Jujaar

Why do you have the Class.forName() in a separate try-catch block than the DriverManager.getConnection()?
Try placing everything in the same try-catch block to see if that resolves your problem.
You may also want to try using an OracleDataSource.
OracleDataSource ods = new OracleDataSource();
String url = "jdbc:oracle:thin:@//hostname:port/SID",
ods.setURL(url);
ods.setUser("apps");
ods.setPassword("password");
Connection conn = ods.getConnection();
Refer to http://st-doc.us.oracle.com/11/111/java.111/b31224/getsta.htm#i1008334 for details on how to connect to the database using a Data Source.

Error while registering Oracle JDBC Diagnosability MBean

Hi All,
I get the following error (pasted at the end)when trying to use the OracleDriver class to create connections.
I am using JDeveloper11g-11.1.1.2.0, and
JDeveloper11g-11.1.1.2.0/wlserver_10.3/server/ext/jdbc/oracle/11g/ojdbc6.jar.
I read other posts with similar errors; the recommendation was to update the jar to the latest patch. But that still does not seem to work.
Any help/pointers appreciated.
Thanks
Meera
------------ Error trace ----------------------------------------------------
SEVERE: Error while registering Oracle JDBC Diagnosability MBean.
java.security.AccessControlException: access denied (javax.management.MBeanTrustPermission register)
 at java.security.AccessControlContext.checkPermission(AccessControlContext.java:323)
 at java.lang.SecurityManager.checkPermission(SecurityManager.java:568)
 at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.checkMBeanTrustPermission(DefaultMBeanServerInterceptor.java:1824)
 at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:310)
 at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:482)
 at oracle.jdbc.driver.OracleDriver.registerMBeans(OracleDriver.java:345)
 at oracle.jdbc.driver.OracleDriver$1.run(OracleDriver.java:197)
 at java.security.AccessController.doPrivileged(Native Method)
 at oracle.jdbc.driver.OracleDriver.<clinit>(OracleDriver.java:193)
 at java.lang.Class.forName0(Native Method)
 at java.lang.Class.forName(Class.java:169)
 at oracle.communications.brm.pdc.server.transfomation.CrossReferenceDBConnectionObj.initializeConnection(Unknown Source)
 at oracle.communications.brm.pdc.server.transfomation.CrossReferenceHandler.<init>(Unknown Source)
 at oracle.communications.brm.pdc.server.transfomation.RRE_TransformationEngine.createWorkItemProcessors(Unknown Source)
 at oracle.communications.brm.pdc.server.junit.RRE_TransformationEngineTests.testCreateWorkItemProcessors(Unknown Source)
 at oracle.communications.brm.pdc.server.junit.RRE_TransformationEngineTests.testMain(Unknown Source)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:597)
 at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
 at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
 at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
 at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
 at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
 at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
 at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:73)
 at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:46)
 at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:180)
 at org.junit.runners.ParentRunner.access$000(ParentRunner.java:41)
 at org.junit.runners.ParentRunner$1.evaluate(ParentRunner.java:173)
 at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
 at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
 at org.junit.runners.ParentRunner.run(ParentRunner.java:220)
 at org.junit.runners.Suite.runChild(Suite.java:115)
 at org.junit.runners.Suite.runChild(Suite.java:23)
 at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:180)
 at org.junit.runners.ParentRunner.access$000(ParentRunner.java:41)
 at org.junit.runners.ParentRunner$1.evaluate(ParentRunner.java:173)
 at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
 at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
 at org.junit.runners.ParentRunner.run(ParentRunner.java:220)
 at junit.framework.JUnit4TestAdapter.run(JUnit4TestAdapter.java:39)
 at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.run(JUnitTestRunner.java:421)
 at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.launch(JUnitTestRunner.java:912)
 at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.main(JUnitTestRunner.java:766)

Hi,
did you enable the permission at the jvm level?
its' done by adding the following lines to your java.policy file under <JRE_HOME>/lib/security
grant {
// JMX Java Management eXtensions
permission javax.management.MBeanTrustPermission "register";
ciao,
Giovanni
P.S. This solution was taken from http://forums.sun.com/thread.jspa?threadID=491124

Accessing oracle DB from a java program - question for oracle driver

Hi,
I have Oracle 10 G under vista on my desktop. I am trying to write a simple java program to access/update database tables. I saw in one of oracle example to import 2 packages - namely --- import oracle.jdbc.driver.*; import oracle.sql.*;
Where do I find these 2 packages. Also I read some documentation to download drivers. I would like to use 2 drivers, the thin driver and the OCI driver. Can someone tell me where I can find these drivers and where do I copy these two drivers - so javac and java command can recognize it.
I will greatly appreciate the help. Julia
My program is as follows
(It was working few years ago but things have changed now and I have Vista because my old machine died):
import java.sql.*; // JDBC package
//import com.inet.tds.JDBCRowSet;
import java.util.*;
import oracle.jdbc.driver.*;
import oracle.sql.*;
public class HomeDB
run as follows:
C:\Documents and Settings\MMM>cd \jj
C:\john>set CLASSPATH=.;c:\oracle9i\classes12;%CLASSPATH%
C:\john>javac HomeDB.java
C:\john>java HomeDB
King: 24000.0
Kochhar: 17000.0
De Haan: 17000.0
Hunold: 9000.0
Ernst: 6000.0
Austin: 4800.0
public static void main(String[] argv)throws SQLException
Connection conn=null;
try // may throw a SQLException
conn = getConnection();
doQuery (conn);
catch (SQLException e)
System.err.println(e.getErrorCode() + ": " + e.getMessage());
finally // make sure the connection is closed
if (conn != null) try {conn.close();} catch (SQLException e) {};
//out.close(); // close PrintWriter stream
private static Connection getConnection() throws SQLException
String username = "scott";
String password = "tiger";
String url = "jdbc:oracle:thin:@localhost:1521:newora";
// "jdbc:oracle:thin:@localhost:1521:COCKYJOB";
Connection conn = null;
String driver = "oracle.jdbc.driver.OracleDriver";
try {
Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
} catch ( ClassNotFoundException cnfex ) {
System.err.println(
"Failed to load JDBC/ODBC driver." );
cnfex.printStackTrace();
}catch (Exception e){
e.printStackTrace();
//DriverManager.registerDriver(new oracle.jdbc.OracleDriver());
conn = java.sql.DriverManager.getConnection(url,username,password);
conn.setAutoCommit(false);
return conn;
private static void doQuery (Connection c) throws SQLException
// statement to be executed
String query = "SELECT ename, job, mgr FROM EMP";
Statement st = null;
ResultSet rs = null;
try // make sure the close statements are executed (in the finally block)
// create the statement
st = c.createStatement();
// execute the query
rs = st.executeQuery(query);
// process results
while (rs.next())
// get the employee last name
String eName = rs.getString("ename");
String eJob = rs.getString("job");
String eMgr = rs.getString("mgr");
System.out.println("Emp Name:" + eName +
"Job: " + eJob +
"MGR: " + eMgr);
finally // make sure the close statements are executed
// close the result set if it exists
if (rs != null) try {rs.close();} catch (Exception e) {};
// close the statement if it exists
if (st != null) try {st.close();} catch (Exception e) {};
Edited by: user455788 on Dec 19, 2008 9:13 PM

You can download the drivers from http://www.oracle.com/technology/software/tech/java/sqlj_jdbc/index.html.
Note that oracle.jdbc.driver is desupported after 10.2, http://forums.oracle.com/forums/ann.jspa?annID=201, so you might want to consider using a DataSource to provide Connections.
E.G.
{message:id=2819114}

Trouble connecting to Oracle 10g XE via Java

Greetings friends,
As the thread title suggests, I'm trying to connect to the inbuilt HR schema that comes with Oracle 10 XE, via Java. This has implications for my work so any help is appreciated. From my limited knowledge, the drive appears to be the issue...
The code is thus:
package dbconnection;
import java.sql.*;
public class SimpleJDBC {
public static void main(String[] args)
throws SQLException,ClassNotFoundException{
Class.forName("oracle.jdbc.OracleDriver");
System.out.println("Driver loaded!");
Connection connection = DriverManager.getConnection
("jdbc:oracle:thin:@127.0.0.1:1521:xe","HR","HR");
Statement statement = connection.createStatement();
ResultSet resultSet = statement.executeQuery
("SELECT EMPLOYEE_ID,FIRST_NAME,LAST_NAME,SALARY"
+ "FROM EMPLOYEES");
while(resultSet.next())
System.out.print(resultSet.getString("EMPLOYEE_ID") +
"\t" + resultSet.getString("FIRST_NAME")+
"\t" + resultSet.getString("LAST_NAME")+
"\t" + resultSet.getString("SALARY"));
connection.close();
The error message output is:
Exception in thread "main" java.lang.ClassNotFoundException: oracle.jdbc.OracleDriver
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:169)
at dbconnection.SimpleJDBC.main(SimpleJDBC.java:7)
Java Result: 1
BUILD SUCCESSFUL (total time: 2 seconds)
My classpath variable is:
C:\ClassPath\ojdbc14_g.jar;.;C:\Program Files\Java\jre6\lib\ext\QTJava.zip
I've tried the ojdbc6.jar, adbc6_g.jar, ojdbc14.jar and adbc14_g.jar drivers with no luck.
Im using 32 bit vista, with Netbeans 6.9.1, and have the latest JDK download(_26). 10g XE is also installed on my machine.
Hopefully I've given you all the info you require. If not, please let me know.
Thanks in advance, and be gentle with me - it's my first time!

gimbal2 wrote:
Your jar is fine, you don't seem to have considered yet that you are attempting to load the wrong class.
Class.forName("oracle.jdbc.OracleDriver");
Exception in thread "main" java.lang.ClassNotFoundException: oracle.jdbc.OracleDriverPerhaps you mean oracle.jdbc.driver.OracleDriver, such as the Oracle JDBC faq suggests?
http://www.orafaq.com/wiki/JDBC
Which is wrong. oracle.jdbc.OracleDriver is the driver name, oracle.jdbc.driver.OracleDriver is an old and deprecated name for the driver. More likely the Oracle JDBC driver is not in the classpath of the application.
BTW: If you use recent versions of Oracle JDBC on Java 6 you don't need to explicitly load the driver as per the JDBC 4 specification (see 2nd note on http://download.oracle.com/docs/cd/E14072_01/java.112/e10589/getsta.htm#i1005373 )

Problem with Java 5 and Oracle 10g JDBC driver

Hi All,
Currently we upgrade our web application to Java 5 and Oracle 10.2 JDBC driver. And we encountered a bug, when the user entered the information through UI and data didn't store into database (Oracle 9i). The problem is that this bug is not happend so often maybe once a day and this did not happen before we upgraded to Java 5 and Oracle 10.2 JDBC driver. Does anyone encounter the same problem ? Is this Java 5 problem or Oracle JDBC driver problem ?
Thanks,

sounds like a database problem...
Are you using a driver version that's supported for your database engine?
What else did you change? We once ran into a major bug in our application that had for 5 years been masked by performance problems in our hardware and infrastructure.
Once those were resolved the bug showed itself and caused tens of thousands of records to be erroneously inserted into our database every day.
It's certainly NOT a problem with your JVM (if it's a decent one, like the Sun implementation).
So it's either your database, your driver, your network (dropping packets???), or your application.
The upgrade may just have exposed something that was already there.

Remote JDBC Problem with Oracle BPM Studio

Hi all, i am facing the Remote JDBC Problem with Oracle BPM Studio.
When i configure a Remote JDBC Connection for SQL in BPM Studio, it prompt me an error.
The SQL Connection is configured as following :
External Resource:
Name : MyDS
Type : SQL Database
Supported Types : Remote JDBC
Details:
Database Type : BPM's Oracle Driver Version:10, 11
J2EE : WLS
Lookup Name : MyAppDS
Configuration for "WLS"
Name : WLS
Type : J2EE Application Server
Supported Types : GENERIC_J2EE
Details:
Initial Context Factory : weblogic.jndi.WLInitialContextFactory
URL : t3://localhost:7001
But, when i try to connect to the Database by using this configuration, I will get an Exception.
An exception occurred while getting a resource from a connector.
Detail:The connector [[ MyDS : SQL : REMOTE_JDBC ]] caused an exception when getting a resource.
Caused by: An exception occurred while getting a resource from a connector.
Detail:The connector [[ WLS : J2EE : J2EE ]] caused an exception when getting a resource.
Caused by: javax.naming.NoInitialContextException: Cannot instantiate class: weblogic.jndi.WLInitialContextFactory [[ Root exception is java.lang.ClassNotFoundException: weblogic.jndi.WLInitialContextFactory ]]
 at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:657)
 at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:288)
 at javax.naming.InitialContext.init(InitialContext.java:223)
 at javax.naming.InitialContext.<init>(InitialContext.java:197)
 at fuego.jndi.FaultTolerantContext.createContext(FaultTolerantContext.java:726)
 at fuego.jndi.FaultTolerantContext.<init>(FaultTolerantContext.java:79)
 at fuego.connector.impl.GenericJ2EEConnector.createInitialContext(GenericJ2EEConnector.java:177)
 at fuego.connector.impl.GenericJ2EEConnector.createStandaloneContext(GenericJ2EEConnector.java:98)
 at fuego.connector.impl.BaseJ2EEConnector.getResource(BaseJ2EEConnector.java:92)
 at fuego.connector.impl.BaseJ2EEConnector.getResource(BaseJ2EEConnector.java:76)
 at fuego.connector.J2EEHelper.getReadOnlyContext(J2EEHelper.java:86)
 ... 12 more
Edited by: user2262377 on Jun 22, 2009 4:01 PM

I guess the weblogic.jar is not included in the studio.
So, i added weblogic.jar (Weblogic 10.3) and wlclient.jar (Weblogic 10.3)
It is working in my simple java code. But, still not working in BPM Studio.
The error logs:
An exception occurred while getting a resource from a connector.
Detail:The connector [OFT_APP_DS:SQL:REMOTE_JDBC] caused an exception when getting a resource.
Caused by: java.lang.Object cannot be cast to java.io.Serializable
fuego.connector.ConnectorException: An exception occurred while getting a resource from a connector.
Detail:The connector [OFT_APP_DS:SQL:REMOTE_JDBC] caused an exception when getting a resource.
 at fuego.connector.ConnectorException.exceptionOnGetResource(ConnectorException.java:88)
 at fuego.connector.JDBCHelper.getReadOnlyConnection(JDBCHelper.java:93)
 at fuego.sqlintrospector.BrowserPanel.connect(BrowserPanel.java:395)
 at fuego.sqlintrospector.BrowserPanel.populateTree(BrowserPanel.java:200)
 at fuego.ui.wizards.ui.CheckTreeBrowser$1.construct(CheckTreeBrowser.java:63)
 at fuego.ui.SwingWorker$2.run(SwingWorker.java:39)
 at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.ClassCastException: java.lang.Object cannot be cast to java.io.Serializable
 at weblogic.iiop.IIOPOutputStream.writeAny(IIOPOutputStream.java:1588)
 at weblogic.iiop.IIOPOutputStream.writeObject(IIOPOutputStream.java:2231)
 at weblogic.utils.io.ObjectStreamClass.writeFields(ObjectStreamClass.java:413)
 at weblogic.corba.utils.ValueHandlerImpl.writeValueData(ValueHandlerImpl.java:235)
 at weblogic.corba.utils.ValueHandlerImpl.writeValueData(ValueHandlerImpl.java:225)
 at weblogic.corba.utils.ValueHandlerImpl.writeValue(ValueHandlerImpl.java:182)
 at weblogic.iiop.IIOPOutputStream.write_value(IIOPOutputStream.java:1963)
 at weblogic.iiop.IIOPOutputStream.write_value(IIOPOutputStream.java:2001)
 at weblogic.iiop.IIOPOutputStream.writeObject(IIOPOutputStream.java:2266)
 at weblogic.jdbc.common.internal.RmiDataSource_WLSkel.invoke(Unknown Source)
 at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:589)
 at weblogic.rmi.cluster.ClusterableServerRef.invoke(ClusterableServerRef.java:230)
 at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:477)
 at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:363)
 at weblogic.security.service.SecurityManager.runAs(Unknown Source)
 at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:473)
 at weblogic.rmi.internal.wls.WLSExecuteRequest.run(WLSExecuteRequest.java:118)
 at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
 at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)

Oracle JDBC problem in Java/log4j

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