Oracle JDBC driver throwing java.nio.BufferUnderflowException exception

Hi,
We have a an application for which the middleware(SAR file) is running on Jboss.
We have configured a DCN (data change notification) listener (As part of SAR file) to listen for the databases changes on port 56090.
A weekly machine security scan has been scheduled. As part of the system scan, it scans the port 56090. Following exception has been thrown by the JDBC driver at the time of scanning.
2009-05-24 16:29:37,874 INFO [STDOUT] java.nio.BufferUnderflowException
2009-05-24 16:29:37,874 INFO [STDOUT] at java.nio.Buffer.nextGetIndex(Buffer.java:398)
2009-05-24 16:29:37,874 INFO [STDOUT] at java.nio.HeapByteBuffer.get(HeapByteBuffer.java:117)
2009-05-24 16:29:37,875 INFO [STDOUT] at oracle.jdbc.driver.NTFConnection.readByte(NTFConnection.java:616)
2009-05-24 16:29:37,875 INFO [STDOUT] at oracle.jdbc.driver.NTFConnection.readInt(NTFConnection.java:650)
2009-05-24 16:29:37,875 INFO [STDOUT] at oracle.jdbc.driver.NTFConnection.unmarshalNSDataPacket(NTFConnection.java:498)
2009-05-24 16:29:37,875 INFO [STDOUT] at oracle.jdbc.driver.NTFConnection.unmarshalOneNSPacket(NTFConnection.java:404)
2009-05-24 16:29:37,875 INFO [STDOUT] at oracle.jdbc.driver.NTFConnection.run(NTFConnection.java:181)
And during scanning time very high CPU usage (90%) is encountered. Normal CPU usage of the application server system will be around 20%.
Can you please give any information on the event/data which is causing the above exception. and how it can be handled, so as to minimize CPU usage back to 20%?
Please give more information about oracle.jdbc.driver.NTFConnection class.
Thanks in Advance
Abdur Rahman
Edited by: user11269361 on Jun 15, 2009 8:57 AM

Hi,
The DCN protocol is synchronous so if the security system scan sends a byte to the port 56090 the protocol will break. I recommend you configure the system scan to not interfere with DCN.
Regards,
Jean

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>
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java.lang.AbstractMethodError:
oracle.jdbc.driver.T4CConnection.setSavepoint(Ljava/la
ng/String")
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Oracle JDBC Driver 10.1.0.4.0 and IndexOutOfBounds-Exception

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Java.lang.NoClassDefFoundError: oracle/jdbc/driver/OracleDriver

When I run java servlet test_ora.java with IE6.0 I get the following error page:
HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: Servlet execution threw an exception
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Java Web Services Developer Pack/1.0-fcs
I thought it is about JDBC configuration. But when I run JdbcCheckup.java everything works fine. Can anybody help me, please?
test_ora.java looks like this:
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.sql.*;
public class test_ora extends HttpServlet {
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
String str_dok_numer, str_f_inkraft;
int int_dok_wal_id;
Connection conn=null;
Statement s = null;
response.setContentType("text/html;charset=iso-8859-2");
PrintWriter out = response.getWriter();
try {
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
conn = DriverManager.getConnection(
"jdbc:oracle:thin:@192.168.15.2:1521:DB2","janusz","kimono");
s = conn.createStatement();
} catch (SQLException e) {
out.println("Blad polaczenia z baza danych: " + e.getMessage());
try {
ResultSet r =s.executeQuery("select dok_numer, f_inkraft, dok_wal_id from gndlf_umowy_inkraft");
out.println("DOK_NUMER\tF_INKRAFT\tDOK_WAL_ID");
while(r.next()){
out.println (r.getString (1) +"\t" + r.getString (2) + "\t" +r.getString (3));
conn.close();
} catch (Exception e) {
out.println("Wystapil problem z wyslaniem SQL do bazy danych: " + e.getMessage());
finally {
try { conn.close(); }
catch(SQLException e) {}
and here is code for JdbcCheckup.java (I get it from Internet and made some modifications):
* This sample can be used to check the JDBC installation.
* Just run it and provide the connect information. It will select
* "Hello World" from the database.
// 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[])
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DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
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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);
Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@192.168.15.2:1521:" + database, user, password);
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// Create a statement
Statement stmt = conn.createStatement();
// Do the SQL "Hello World" thing
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System.out.println(rset.getString(1));
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rset.close();
stmt.close();
conn.close();
System.out.println("Your JDBC installation is correct.");
// 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();
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catch(IOException e) {
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I use Java Web Service Developer Pack 1.0 on Win98 SE, database Oracle 8.1.7 is installed on dedicated IBM server (AIX 4.x).
I put these lines in autoexec.bat:
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set JAVA_HOME=C:\j2sdk1.4.0

I have the same problem. I created a JSP page that uses a class to retrieve database information. I added a main method to the class so I would be able to test it. When I test the class using the main method the method returns all the information from the database. When I try it using Tomcat, I get the following error: java.lang.NoClassDefFoundError: oracle/jdbc/driver/OracleDriver
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SchemaTool() throws ClassNotFoundException: oracle.jdbc.driver.OracleDriver

KODO 2.5.3
I am trying to use the SchemaTool java class for schema manipulations. When
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com.solarmetric.kodo.runtime.FatalUserException:
java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver
NestedThrowables:
java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver
I am passing an instance of MultiLoaderClassResolver (constructed using a
custom URLClassLoader) as the ClassResolver argument to the SchemaTool
constructor. The orcale jar "classes12.jar" is one of the URLs in the
URLClassResolver. Before constructing a SchemaTool object, a call to
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Thanks
Vijay

Marc,
It might well be problems with my custom class loader (which are a pain to
debug indeed) or my lack of understanding of some of your schema tool
classes, but the basic problem I encountered (before getting to the Logger
issue) is as follows:
I have an instance of MultiLoaderClassResolver constructed using my custom
class loader.
A call to resolveClass("orcale.jdbc.driver.OrcaleDriver") on this instance
returns the correct Class (does not throw a ClassNotFound exception).
The same MultiLoaderClassResolver instance is passed as an argument to
SchemaTool(). SchemaTool.refresh() throws an exception:
ClassNotFound: orcale.jdbc.driver.OrcaleDriver
So it seems to me that somewhere in the SchemaTool code you are trying to
resolve orcale.jdbc.driver.OrcaleDriver using something other than the
instance of MultiLoaderClassResolver that I passed in. From the stack trace
in my earlier message, it seems like that is happening in:
com.solarmetric.kodo.impl.jdbc.ormapping.ClassMapping.createPKColumns(ClassM
apping.java:1584)where an instance of ConfigurationConnector is constructed. BTW, this is how
I construct and pass a ConfigurationConnector to SchemaTool:
JDBCConfiguration conf = new JDBCSimpleConfiguration(someProps);
ClassResolver resolver = new MultiLoaderClassResolver(myCustomClassLoader);
Connector connector = new ConfigurationConnector(conf, resolver, false);
SchemaTool sTool = new SchemaTool(conf, resolver, connector);
Vijay
"Marc Prud'hommeaux" <[email protected]> wrote in message
news:[email protected]...
Vijay-
Custom ClassLoader problems are often very hairy to debug. The first
error message you are receiving indicates a problem:
org.apache.commons.logging.LogConfigurationException: Class
org.apache.commons.logging.impl.Log4JLogger does not implement LogThis indicates to me that the
"org.apache.commons.logging.impl.Log4JLogger" and
"org.apache.commons.logging.Log" classes are being loaded in different
ClassLoaders, which is generally a bad thing. Is your URLClassLoader
deferring to the parent ClassLoader?
I think that the first step is to identify why the class loaders are
different for these two classes (which should be easy to do with some
printlns in a test program that uses your URLClassLoader).
Bear in mind that this isn't technicall a Kodo issue, but a general
ClassLoader issue. However, we are happy to try to provide hints and
guidance about how to isolate the source of the problem.
In article <[email protected]>, Vijay Ganesan wrote:
After trying out some combinations, the stack trace at the bottom of
this
message gives a better clue of what my problem is:
Looks like a new ConfigurationConnector is created in ClassMapping.javathat
ignores my class resolver (based on my custom class loader) that Icreated
as follows:
JDBCConfiguration conf = new JDBCSimpleConfiguration(someProps);
ClassResolver resolver = newMultiLoaderClassResolver(myCustomClassLoader);
>>
Connector connector = new ConfigurationConnector(conf, resolver, false);
SchemaTool sTool = new SchemaTool(conf, resolver, connector);
Adding the following line before the schema related code solves theproblem:
Thread.currentThread().setContextClassLoader(myCustomClassLoader);
However, that causes another error which, from a brief look at
LogFactoryImpl, seems surely related to custom class loaders. Don't knowhow
to get past this one:
org.apache.commons.logging.LogConfigurationException:
org.apache.commons.logging.LogConfigurationException:
org.apache.commons.logging.LogConfigurationException: Class
org.apache.commons.logging.impl.Log4JLogger does not implement Log
at
org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.ja
va:532)
at
org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.ja
va:272)
at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:414)
at
com.solarmetric.kodo.impl.jdbc.runtime.ConfigurationConnector.createConnecti
onFactory(ConfigurationConnector.java:140)
--------Stack trace------------
java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver
at
com.solarmetric.util.classes.LoaderClassResolver.resolveClass(LoaderClassRes
olver.java:34)
at
com.solarmetric.kodo.impl.jdbc.runtime.ConfigurationConnector.createConnecti
onFactory(ConfigurationConnector.java:113)
at
com.solarmetric.kodo.impl.jdbc.runtime.ConfigurationConnector.<init>(Configu
rationConnector.java:67)
at
com.solarmetric.kodo.impl.jdbc.runtime.ConfigurationConnector.<init>(Configu
rationConnector.java:59)
at
com.solarmetric.kodo.impl.jdbc.runtime.ConfigurationConnector.<init>(Configu
rationConnector.java:39)
at
com.solarmetric.kodo.impl.jdbc.ormapping.ClassMapping.createPKColumns(ClassM
apping.java:1584)
at
com.solarmetric.kodo.impl.jdbc.ormapping.ClassMapping.install(ClassMapping.j
ava:1416)
at
com.solarmetric.kodo.impl.jdbc.ormapping.Mapping.createMapping(Mapping.java:
169)
at
com.solarmetric.kodo.impl.jdbc.ormapping.Mapping.createMappings(Mapping.java
:116)
at
com.solarmetric.kodo.impl.jdbc.ormapping.Mapping.createMappings(Mapping.java
:86)
at
com.solarmetric.kodo.impl.jdbc.schema.SchemaTool.createMappings(SchemaTool.j
ava:831)
at
com.solarmetric.kodo.impl.jdbc.schema.SchemaTool.refresh(SchemaTool.java:333
at
com.solarmetric.kodo.impl.jdbc.schema.SchemaTool.refresh(SchemaTool.java:321
at
com.solarmetric.kodo.impl.jdbc.schema.SchemaTool.refresh(SchemaTool.java:311
"Stephen Kim" <[email protected]> wrote in message
news:[email protected]...
My guess is that your custom classloader is preventing instanceof. Can
you try using the system classloader or see if java.sql.Driver is
assignable from oracle.jdbc.dirver.OracleDriver?
Vijay Ganesan wrote:
KODO 2.5.3
I am trying to use the SchemaTool java class for schema
manipulations.
When
I try to construct a SchemaTool object I get the following exception:
com.solarmetric.kodo.runtime.FatalUserException:
java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver
NestedThrowables:
java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver
I am passing an instance of MultiLoaderClassResolver (constructed
using
a
custom URLClassLoader) as the ClassResolver argument to the
SchemaTool
constructor. The orcale jar "classes12.jar" is one of the URLs in the
URLClassResolver. Before constructing a SchemaTool object, a call to
canResolveClass("oracle.jdbc.driver.OracleDriver") on the classresolver
returns true. So why is SchemaTool not able to find this class?
Thanks
Vijay
Steve Kim
[email protected]
SolarMetric Inc.
http://www.solarmetric.com
Marc Prud'hommeaux [email protected]
SolarMetric Inc. http://www.solarmetric.com

Exception "not implemented for class oracle.jdbc.driver.T4CNumberAccessor"

Hello I'm having some troubles dealing with 'java.sql.Date' I'm working with express edition database and I have three classes(different packages)
1.Mapper
2.Objects Class
3.ConsoleTest
I need to get an arraylist of objects, some of which contain dates, but when try to do it I get this exception
"java.sql.SQLException: Invalid column type: getDate not implemented for class oracle.jdbc.driver.T4CNumberAccessor"
Do you have any idea how I can implement the getDate method for this T4CNumberAccessor
Here are the methods that I'm using
1.Mapper
public ArrayList<Object> getAllTaskAuctions(Connection con)
          ArrayList<Object> l1 = new ArrayList<Object>();
          String SQLString1 = "select * from taskauction natural join tasks";
PreparedStatement statement=null;
try
//=== get taskauctions natural join tasks
statement = con.prepareStatement(SQLString1);
ResultSet rs = statement.executeQuery();
while(rs.next())
l1.add(new TaskAuction(rs.getInt(1), rs.getInt(2), rs.getInt(3),
rs.getDate(4), rs.getDate(5), rs.getInt(6)));
l1.add(new Task(rs.getInt(1), rs.getInt(2), rs.getString(3),
rs.getString(4), rs.getString(5), rs.getString(6), rs.getInt(7)));
catch (Exception exc)
System.out.println("Fail in TaskAuctionMapper - getAllTaskAuctions");
System.out.println(exc);
return l1;
2.ConsoleTest class
Connection con;
     public Connection getConnection(){
          try{
     Class.forName("oracle.jdbc.driver.OracleDriver");
     con = DriverManager.getConnection(
     "jdbc:oracle:thin:@localhost:1521:XE", "Project", "123" );
     //username/password@[/]host[:port][service_name]
     catch (Exception e)
     {   System.out.println("fail in getConnection()");
     System.out.println(e); }
          return con;
     public static void main(String[] args) {
          ConsoleTest ct = new ConsoleTest();
          TaskAuctionMapper tam1 = new TaskAuctionMapper();
ArrayList<Object> alt1 = tam1.getAllTaskAuctions(ct.getConnection());
Iterator<Object> itr1 = alt1.iterator();
while (itr1.hasNext())
TaskAuction taskauct = (TaskAuction) itr1.next();
//Problem, exception traced to TaskAuctionMapper
System.out.println(
          "Task ID: " + taskauct.getTaskid()+ ", "+
          "StartDate: "+ taskauct.getStartdate()+", "+
          "User ID: " + taskauct.getUserid());
     }

Found the answer, I shouldn't use integers as parameters of column index in the result set, but instead use String to mark the fields :)

Re : Error java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDrive

Hello All,
I am writing this simple program which connects to Oracle DB ( 10.2 ). The Java version I have is 1.5.0_13 . I do have oracle client installed. When I run the below code ...I get error
java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver
        at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:164)
        at OraThin.main(OraThin.java:13)The code I have is :
import java.io.*;
import java.sql.*;
public class OraThin {
public static void main(String[] args) {
    try {
System.out.println(System.getProperty ("java.class.path") );
      Connection con=null;
      Class.forName("oracle.jdbc.driver.OracleDriver");
      con=DriverManager.getConnection(
        "jdbc:oracle:thin:@hostname:15282:ServiceName",
        "scott",
        "tiger");
      Statement s=con.createStatement();
      s.execute("SELECT SYSDATE FROM DUAL");
      s.close();
      con.close();
} catch(Exception e){e.printStackTrace();}
} Please suggest as to what am I missing, I am not that well versed with Java.
Thanks in advance,
Sam

Hello Paul,
Thanks for you suggestion. Based on it , I did add the exact jar file in the PATH environmental variable in XP.
Path=C:\oraclexe\app\oracle\product\10.2.0\server\jdbc\lib\ojdbc14.jar;C:\oraclexe\a
pp\oracle\product\10.2.0\server\bin;C:\oracle\product\10.2.0\client_1\bin;C:\Ora
cle\product\10.1.0\Client_1\bin;C:\Oracle\product\10.1.0\Client_1\jre\1.4.2\bin\
client;C:\j2sdk1.4.2_06\bin;Even after adding the specific jar file *("C:\oraclexe\app\oracle\product\10.2.0\server\jdbc\lib\ojdbc14.jar")* ..I am getting the exact same error. moreover, to verify this I also tried to import import oracle.jdbc.driver.*.....and now my code would not even complie and I get error *(c:\Program Files\Java\jdk1.5.0_13\bin\OraThin.java:3: package oracle.jdbc.driver*
does not exist ) . I also rebooted my machine just to make sure ...that didnt work either. Also, I changed these jar to be first in the PATH varibale ..to avoid conflict with any later .jar's classes. The code is :
import java.io.*;
import java.sql.*;
import oracle.jdbc.driver.*;
public class OraThin {
public static void main(String[] args) {
    try {
System.out.println(System.getProperty ("java.class.path") );
      Connection con=null;
      Class.forName("oracle.jdbc.driver.OracleDriver");
      con=DriverManager.getConnection(
        "jdbc:oracle:thin:@hostname:15282:ServiceName",
        "scott",
        "tiger");
      Statement s=con.createStatement();
      s.execute("SELECT SYSDATE FROM DUAL");
      s.close();
      con.close();
} catch(Exception e){e.printStackTrace();}
}What am I missing here!! ?
Thanks again,
Sam

Java.lang.AbstractMethodError: oracle.jdbc.driver.OracleDatabaseMetaData.lo

I am evaluating the sun RI of javax.sql package . I downloaded the jdbc_rowset_tiger-1_0_1-mrel-jwsdp.zip package and installed in my machine.
I tried the JdbcRowSet implmenation and it worked pretty smooth. I wanted to try the disconnected Rowset implementation. I tried CachedRowSet Implementation with thin driver. I get the following error message.
Exception in thread "main" java.lang.AbstractMethodError: oracle.jdbc.driver.OracleDatabaseMetaData.locatorsUpdateCopy()Z
at com.sun.rowset.CachedRowSetImpl.execute(Unknown Source)
at com.sun.rowset.CachedRowSetImpl.execute(Unknown Source)
at CachedRowSetSampl.main(CachedRowSetSampl.java:79)
I am using thin driver with Oracle8i db.
Appreciate any early responses

I had the same problem initially.
I fixed it by downloading an updated ojdbc14.jar (1).
It may be because I downloaded the ocrs12.jar from there a bit earlier and the versions of ojdbc14.jar and ocrs12.jar need to match (that is, come from the Oracle10g suite of jars).
Here is the class I used:
import java.sql.*;
import javax.sql.*;
import com.sun.rowset.WebRowSetImpl;
import com.sun.rowset.providers.RIXMLProvider;
public class test {
public static void main(String[] args) {
    try {
      Class.forName("oracle.jdbc.driver.OracleDriver");
      WebRowSetImpl wrs = new WebRowSetImpl();
      wrs.setCommand("select table_name from user_tables");
      wrs.setUsername("scott");
      wrs.setPassword("tiger");
      wrs.setUrl("jdbc:oracle:thin:@paramount.com:1521:ORCL");
      wrs.execute();
      wrs.writeXml(System.out);
    } catch (Exception e) {
      System.out.println("Exception:"+e);
Dale(1) http://www.oracle.com/technology/software/tech/java/sqlj_jdbc/htdocs/jdbc101020.html (Oracle Database 10g JDBC Drivers)

Oracle.jdbc.driver.oracleResultSet Vs java.sql.ResultSet

Hi all
Could any one got any idea on this problem...
My application program is forced to use both Java Result Set(java.sql.ResultSet) and Oracle ResultSet(jdbc.driver.oracleResultSet).
This on javac get compiled and is working fine....
But when i try to compile with vbjc(visibroker-java compiler)... it failes to compile...
throwing ...
.."The method oracle.jdbc2.Blob getBlob(int) declared in class oracle.jdbc.driver.OracleResultSet cannot override the method of the same signature declared in interface java.sql.ResultSet. They must have the same return
type."

Hi Prowzen,
Ur reply was much userful, which gave me a direction to prob into... Thank You Very MUCH.
I relpaced
BLOB blob = ((OracleResultSet)rs).getBLOB(int);
with
oracle.sql.BLOB blob =(BLOB)rs.getObject(int);
So eliminating usage of OracleResultSet, the conflicts got cleared...
Keep writing...
Regards
Sreekumar P P.
[email protected]

Oracle.jdbc.driver.T4CPreparedStatement causing out of memory exception

I am using oracle spatial 11.2.0.3 g.
I am getting out of memory exception on a process.
I analyzed the heap dump using OOMemory analyzer and figured out oracle.jdbc.driver.T4CPreparedStatement keeping 73% of the heap space.
Is oracle expanding the SPARQL queries in java side or keeping the results in cache.
How to solve it ?

Hi,
We will need a re-producible test case (preferably small) to figure out why you are getting out of memory. You can send it to Oracle Support or email me at alan dot wu at oracle dot com.
Jena Adapter does not cache SPARQL query results on the Java side. The T4CPreparedStatement is not even in Jena Adapter's
code path or RDF's code path.
Thanks,
Zhe Wu

Java.io.NotSerializableException: oracle.jdbc.driver.T4CConnection

Hi,
I am using weblogic 9.2 on windows. I have the data source configured(Oracle 9.2)
I am getting the following exception when I try to create temporaryBlob -
BLOB blob = BLOB.createTemporary(conn, false,
                    BLOB.DURATION_SESSION);
Exception messages ------
Exception in thread "main" weblogic.rmi.extensions.RemoteRuntimeException: Unexpected Exception
     at weblogic.jdbc.rmi.internal.ConnectionImpl_weblogic_jdbc_wrapper_PoolConnection_oracle_jdbc_driver_T4CConnection_920_WLStub.physicalConnectionWithin(Unknown Source)
     at weblogic.jdbc.rmi.SerialConnection_weblogic_jdbc_rmi_internal_ConnectionImpl_weblogic_jdbc_wrapper_PoolConnection_oracle_jdbc_driver_T4CConnection_920_WLStub.physicalConnectionWithin(Unknown Source)
     at oracle.sql.BLOB.createTemporary(BLOB.java:587)
     at com.hp.nuoss.fm.cs.test.SessionBeanClient.testInsertBLOBData(SessionBeanClient.java:109)
     at com.hp.nuoss.fm.cs.test.SessionBeanClient.main(SessionBeanClient.java:154)
Caused by: java.rmi.MarshalException: error marshalling return; nested exception is:
     java.io.NotSerializableException: oracle.jdbc.driver.T4CConnection
     at weblogic.rjvm.ResponseImpl.unmarshalReturn(ResponseImpl.java:195)
     at weblogic.rmi.internal.BasicRemoteRef.invoke(BasicRemoteRef.java:224)
     ... 5 more
Caused by: java.io.NotSerializableException: oracle.jdbc.driver.T4CConnection
     at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1075)
     at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:291)
     at weblogic.rjvm.MsgAbbrevOutputStream.writeObject(MsgAbbrevOutputStream.java:614)
     at weblogic.utils.io.ChunkedObjectOutputStream.writeObject(ChunkedObjectOutputStream.java:73)
     at weblogic.jdbc.rmi.internal.ConnectionImpl_weblogic_jdbc_wrapper_PoolConnection_oracle_jdbc_driver_T4CConnection_WLSkel.internalInvoke1(Unknown Source)
     at weblogic.jdbc.rmi.internal.ConnectionImpl_weblogic_jdbc_wrapper_PoolConnection_oracle_jdbc_driver_T4CConnection_WLSkel.invoke(Unknown Source)
     at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:517)
     at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:407)
     at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:363)
     at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:147)
     at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:403)
     at weblogic.rmi.internal.BasicServerRef.access$300(BasicServerRef.java:56)
     at weblogic.rmi.internal.BasicServerRef$BasicExecuteRequest.run(BasicServerRef.java:934)
     at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
     at weblogic.work.ExecuteThread.run(ExecuteThread.java:181)

Someone else had this same problem and they seem to have solved it:
http://forum.java.sun.com/thread.jspa?threadID=5105589&messageID=9363332
I guess SessionBean1 is not serializable perhaps because it doesn't implement Serializable, and the writeObject method in StandardSession is trying to write it to disk (trying to serialize it).
Try changing SessionBean 1 to
public class SessionBean1 implements Serializable{
}

Java.lang.AbstractMethodError: oracle/jdbc/driver/OracleResultSet.getBlob

Hi,
I am using WSAD 4.0.3. While I am running application I am getting this error.
[10/5/02 13:26:17:984 GMT+08:00] 7a483a9b ExceptionUtil X CNTR0020E: Non-application exception occurred while processing method lodge on bean BeanId(CePAC#CePACEJB.jar#CfsControllerBean, f0b300abe8): java.lang.AbstractMethodError: oracle/jdbc/driver/OracleResultSet.getBlob
I have set the classpath i.e classes111.zip. This function is to insert record to a database having blob field.
Waiting for a quick response.

java.lang.AbstractMethodErrorIn jdbc that often occurs because you are using a newer version of JDBC (the jvm) and an older driver. It occurs because you called a method which exists in the newer JDBC but does not exist in the older driver.
getBlob() was introduced in java 1.2, so it was not in JDBC 1.0.

Error loading driver: java.lang.ClassNotFoundException: oracle.jdbc.driver.

Hi!!!
I�m trying to execute a example program included in http://archive.coreservlets.com/, the file is FruitTest.java....this compile very well...but....when i tried to execute it i have the following error:
Error loading driver: java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver
Could somebody tell me what i have to add to my classpath?...and how to know if i have to download something and in what link is it?......
Thanks in advance...
Mary

Hi mary,
Please try following code, but before that please include classes12.zip in ur classpath. This file contains the oracle thin driver.
Connection connection = null;
try {
Class.forName("oracle.jdbc.driver.OracleDriver");
String url = "jdbc:oracle:thin:@dbUrl"
connection = DriverManager.getConnection(url, "dbName", "password");
}catch (Exception e){
e.printStackTrace();
good luck ...san :-)

JDBC,Oracle - java.lang.ClassNotFoundException: oracle.jdbc.driver.Oracle

I am using JBuilder5 which comes with jdk1.3. I have installed oracle 8.1.7 Enterprise version.
I am using Win NT 4.0.
I have set the PATH variable as E:\oracle\ora81\lib; and
CLASSPATH as : E:\oracle\ora81\jdbc\lib\classes12.zip;E:\oracle\ora81\jdbc\lib\nls_charset12.zip;
My JDBC code is
package sample2;
import java.sql.*;
public class Two {
Connection con;
Statement st;
public Two() {
try{
Class.forName("oracle.jdbc.driver.OracleDriver");
con = DriverManager.getConnection("jdbc:oracle:oci8:@First","scott","tiger");
st = con.createStatement();
ResultSet rs = st.executeQuery("Select * from Book");
while(rs.next())
System.out.print(rs.getInt("ID")+"\t");
System.out.print(rs.getString("title")+"\t");
System.out.print(rs.getString("author")+"\t");
System.out.print(rs.getString("subject")+"\t");
System.out.println(rs.getInt("copies")+"\t");
st.close();
con.close();
catch(Exception ex)
System.out.println("Exception : " + ex.toString());
public static void main(String[] args) {
Two two1 = new Two();
I am getting this exception:
Exception : java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver
I can understand that the classpath for the driver is the problem here.
Also, I tried to run this file without JBuilder as a independent file on a notepad. Even then this exception is thrown.
I have set the PATH to E:\oracle\ora81\bin and also to E:\oracle\ora81\lib.
I ran "echo %classpath%" from my command prompt and this is what i am getting.
E:\JBuilder5\jdk1.3\lib\tools.jar;E:\JBuilder5\jdk1.3\dt.jar;E:\oracle\ora81\jdbc\lib\classes12.zip;E:
\oracle\ora81\jdbc\lib\nls_charset12.zip;
I searched solution for this probldem in Sun JDC Forum itself. Many of them suggested to unzip classes12.zip and create jar file and add it in the classpath. Alos, some have suggested to copy the classes12.zip in home directory and then include this path in the classpath. I tried those solutions also. But, nothing seem to work.
Somebody help me fix this problem.
Thanks in advance.

Jbuilder5 uses a different means of loading dependent classes. Use menu : Tools -->Configure Libraries - Click New and setup a new named library that points to classes12.zip .
Then include this in u'r required Libraries of your project using menu Project --> Project Properties - required Libraries tab.
I don't thnk Jbuilder5 even refers to CLASSPATH set in Windows NT environement. Path may need to be set to include oracle/ora81/bin directory though.
Hope this helps.

Oracle JDBC driver throwing java.nio.BufferUnderflowException exception

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