Using Oracle8 JDBC Drivers with WebLogic 5.1

We are currently using the BEA WebLogic 5.1 application server and Oracle 8.0.4. We are using the JDBC OCI driver that came out-of-the-box with the WebLogic software. However, we would like to use the driver developed by Oracle, instead.
Does the Oracle8 JDBC driver (both type 2 and type 4) interoperate with WebLogic 5.1? If not, what are the problems that prohibit them being used together?
Thanks... Steve Bursch

Summarizing from previous threads on this forum (I have not run this configuration myself):
The main issue is that you will not be able to use Oracle-specific functionality from the Oracle driver.
This includes all types in oracle.sql, or any APIs on oracle.jdbc.driver.OracleXxxx classes, or JPublisher-generated wrappers for SQL Object Types, collections, or REFs.
Also, since Oracle does not support side-channel result sets, but requires explicit REF CURSOR out parameters from stored procedures/functions, you will not be able to return REF CURSORs to the client, from stored proedures or functions - the getCursor() API that is required is Oracle-specific and not part of JDBC.
As long as you limit yourself strictly to standard JDBC types, and do not require the return of result sets from the server, you should probably be fine.

Similar Messages

Workaround for using Oracle JDBC extension with WLS pooling

Reading the newsgroup I saw that many of us encountered the problems
with ClassCastException when tried to use Oracle JDBC extension
with WLS pooling. I also had.
In this case BEA recommends to use dangerous
method getVendorConnection() which exposes
the physical connection object to your code.
Yes it's really dangerous because of unsafe usage may breaks
WLS pooled connection(s).
Moreover, this practice will make your JDBC code
unportable (your JDBC code in addition to Oracle dependence
became Weblogic dependent):
void doSmth() {
Connection con = ...;
Connection vCon = ((WLConnection)con).getVendorConnection();
// + mess of usage con in one places and vCon in others
// (where Oracle extensions are needed)
// !Don't forget to don't close vCon!
Sux.
I found the workaround.
Introduction
============
Yes the real cause of ClassCastException is that
in depth of Oracle driver the casting
to class oracle.jdbc.driver.OracleConnection
(not to interface oracle.jdbc.OracleConnection)
is performed.
Someone can say that this is bug or pure desing.
Weblogic pooled connection provide dynamic
implementation for all public interfaces
which real physical (wrapped) connection object implements.
Great feature!
But I guess that all interface methods implemented
by simple call-delegation to physical (wrapped) connection object.
In case of oracle.jdbc.OracleConnection interface
this approach doesn't work for at least one its method:
public OracleConnection unwrap()
WLS pooled connection shoudn't implement this method by
delegation to physical connection object BUT should
return physical connection object itself!
// Wrong implementation of unwrap()
// delegation is used
public OracleConnection unwrap() {
return physicalConnection.unwrap();
// Right implementation of unwrap()
// physical connection returned
public OracleConnection unwrap() {
return physicalConnection;
Workaround
==========
1. Develop your own OracleConnection wrapper class:
import oracle.jdbc.OracleConnection;
import weblogic.jdbc.extensions.WLConnection;
public class MyOracleConnectionImpl implements OracleConnection {
private OracleConnection con;
public MyOracleConnectionImpl(OracleConnection connection)
throws SQLException
this.con = connection;
public OracleConnection unwrap() {
return (OracleConnection)
((WLConnection)con).getVendorConnection();
/* Implement all other methods by delegation to con object */
2. Don't get Connections directly from DataSource --
develop your own simple (may be static) utility
class which retrives Connections from dataSource
and returns them wrapped into your MyOracleConnectionImpl
to your code from some method:
puclic abstract class MyConnectionSource {
public static Connection getConnection() {
Connection con = // get it from DataSource
return new MyOracleConnectionImpl((OracleConnection)con);
3. Add attribute RemoveInfectedConnectionsEnabled="false"
to definition of your JDBCConnectionPool within config.xml
You may do it because of you `safely` use vendorConnection --
you don't expose it to application code.
4. Enjoy the Oracle JDBC extensions in your code!
Example:
Connection con = MyConnectionSource.getConnection;
ArrayDescriptor add =
ArrayDescriptor.createDescriptor("your_type", con);
Hope it helps to someone.
Best regards,
Eugene Voytitsky

Hello Eugene Voytitsky,
Thanks Eugene Voytitsky for your idea
I have tried the solution suggested by You, but it did not work.
It still throws ClassCastException.
I am sorry for posting the whole code of two classes below.
I did this to give you more clarity.
I am also indicating the place where the exception was thrown..
Please let me know if I am doing something wrong.
OracleConnection Wrapper class
package ejbTesting;
// sql imports
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.SQLWarning;
import java.sql.Statement;
// util imports
import java.util.Map;
import java.util.Properties;
// imports from Oracle Driver Classes
import oracle.jdbc.OracleConnection;
import oracle.jdbc.OracleOCIFailover;
import oracle.jdbc.OracleSavepoint;
// import from Weblogic extensions
import weblogic.jdbc.extensions.WLConnection;
public class WeblogicConnectionWrapper implements OracleConnection
     // oracle connection object
     private OracleConnection connection;
     public WeblogicConnectionWrapper (OracleConnection orclConnection)
          try
               this.connection = orclConnection;
          catch(Exception unexpected )
               unexpected.printStackTrace();
     public OracleConnection unwrap()
          try
          // The datasource returns a weblogic.jdbc.pool.Connection
          // This needs to be type casted to weblogic.jdbc.extensions.WLConnection
          // Only this weblogic.jdbc.extensions.WLConnection CAN BE type casted
          // to OracleConnection
     return (OracleConnection) ((WLConnection) connection).getVendorConnection();
     catch(Exception sqlException )
          sqlException.printStackTrace ();
          return null;
     /* Implement all other methods by delegation to connection object */
public Connection _getPC()
return connection._getPC();
public void archive(int i, int j, String s)
throws SQLException
connection.archive(i, j, s);
public void assertComplete()
throws SQLException
connection.assertComplete();
public void clearWarnings()
throws SQLException
connection.clearWarnings();
public void close()
throws SQLException
connection.close();
public void commit()
throws SQLException
connection.commit();
public Statement createStatement()
throws SQLException
return connection.createStatement();
public Statement createStatement(int i, int j)
throws SQLException
return connection.createStatement(i, j);
public boolean getAutoClose()
throws SQLException
return connection.getAutoClose();
public boolean getAutoCommit()
throws SQLException
return connection.getAutoCommit();
public CallableStatement getCallWithKey(String s)
throws SQLException
return connection.getCallWithKey(s);
public String getCatalog()
throws SQLException
return connection.getCatalog();
public boolean getCreateStatementAsRefCursor()
return connection.getCreateStatementAsRefCursor();
public int getDefaultExecuteBatch()
return connection.getDefaultExecuteBatch();
public int getDefaultRowPrefetch()
return connection.getDefaultRowPrefetch();
public Object getDescriptor(String s)
return connection.getDescriptor(s);
public boolean getExplicitCachingEnabled()
throws SQLException
return connection.getExplicitCachingEnabled();
public boolean getImplicitCachingEnabled()
throws SQLException
return connection.getImplicitCachingEnabled();
public boolean getIncludeSynonyms()
return connection.getIncludeSynonyms();
public Object getJavaObject(String s)
throws SQLException
return connection.getJavaObject(s);
public DatabaseMetaData getMetaData()
throws SQLException
return connection.getMetaData();
public Properties getProperties()
return connection.getProperties();
public boolean getRemarksReporting()
return connection.getRemarksReporting();
public boolean getRestrictGetTables()
return connection.getRestrictGetTables();
public String getSQLType(Object obj)
throws SQLException
return connection.getSQLType(obj);
public String getSessionTimeZone()
return connection.getSessionTimeZone();
public int getStatementCacheSize()
throws SQLException
return connection.getStatementCacheSize();
public PreparedStatement getStatementWithKey(String s)
throws SQLException
return connection.getStatementWithKey(s);
public int getStmtCacheSize()
return connection.getStmtCacheSize();
public short getStructAttrCsId()
throws SQLException
return connection.getStructAttrCsId();
public boolean getSynchronousMode()
return connection.getSynchronousMode();
public int getTransactionIsolation()
throws SQLException
return connection.getTransactionIsolation();
public Map getTypeMap()
throws SQLException
return connection.getTypeMap();
public String getUserName()
throws SQLException
return connection.getUserName();
public boolean getUsingXAFlag()
return connection.getUsingXAFlag();
public SQLWarning getWarnings()
throws SQLException
return connection.getWarnings();
public boolean getXAErrorFlag()
return connection.getXAErrorFlag();
public boolean isClosed()
throws SQLException
return connection.isClosed();
public boolean isLogicalConnection()
return connection.isLogicalConnection();
public boolean isReadOnly()
throws SQLException
return connection.isReadOnly();
public String nativeSQL(String s)
throws SQLException
return connection.nativeSQL(s);
public Object openJoltConnection(String s, short word0, short word1)
return connection.openJoltConnection(s, word0, word1);
public void oracleReleaseSavepoint(OracleSavepoint oraclesavepoint)
throws SQLException
connection.oracleReleaseSavepoint(oraclesavepoint);
public void oracleRollback(OracleSavepoint oraclesavepoint)
throws SQLException
connection.oracleRollback(oraclesavepoint);
public OracleSavepoint oracleSetSavepoint()
throws SQLException
return connection.oracleSetSavepoint();
public OracleSavepoint oracleSetSavepoint(String s)
throws SQLException
return connection.oracleSetSavepoint(s);
public int pingDatabase(int i)
throws SQLException
return connection.pingDatabase(i);
public CallableStatement prepareCall(String s)
throws SQLException
return connection.prepareCall(s);
public CallableStatement prepareCall(String s, int i, int j)
throws SQLException
return connection.prepareCall(s, i, j);
public CallableStatement prepareCallWithKey(String s)
throws SQLException
return connection.prepareCallWithKey(s);
public PreparedStatement prepareStatement(String s)
throws SQLException
return connection.prepareStatement(s);
public PreparedStatement prepareStatement(String s, int i, int j)
throws SQLException
return connection.prepareStatement(s, i, j);
public PreparedStatement prepareStatementWithKey(String s)
throws SQLException
return connection.prepareStatementWithKey(s);
public void purgeExplicitCache()
throws SQLException
connection.purgeExplicitCache();
public void purgeImplicitCache()
throws SQLException
connection.purgeImplicitCache();
public void putDescriptor(String s, Object obj)
throws SQLException
connection.putDescriptor(s, obj);
public void registerApiDescription(String s, short word0, short word1, String
s1)
connection.registerApiDescription(s, word0, word1, s1);
public void registerSQLType(String s, Class class1)
throws SQLException
connection.registerSQLType(s, class1);
public void registerSQLType(String s, String s1)
throws SQLException
connection.registerSQLType(s, s1);
public void registerTAFCallback(OracleOCIFailover oracleocifailover, Object
obj)
throws SQLException
connection.registerTAFCallback(oracleocifailover, obj);
public void rollback()
throws SQLException
connection.rollback();
public void setAutoClose(boolean flag)
throws SQLException
connection.setAutoClose(flag);
public void setAutoCommit(boolean flag)
throws SQLException
connection.setAutoCommit(flag);
public void setCatalog(String s)
throws SQLException
connection.setCatalog(s);
public void setCreateStatementAsRefCursor(boolean flag)
connection.setCreateStatementAsRefCursor(flag);
public void setDefaultExecuteBatch(int i)
throws SQLException
connection.setDefaultExecuteBatch(i);
public void setDefaultRowPrefetch(int i)
throws SQLException
connection.setDefaultRowPrefetch(i);
public void setExplicitCachingEnabled(boolean flag)
throws SQLException
connection.setExplicitCachingEnabled(flag);
public void setImplicitCachingEnabled(boolean flag)
throws SQLException
connection.setImplicitCachingEnabled(flag);
public void setIncludeSynonyms(boolean flag)
connection.setIncludeSynonyms(flag);
public void setReadOnly(boolean flag)
throws SQLException
connection.setReadOnly(flag);
public void setRemarksReporting(boolean flag)
connection.setRemarksReporting(flag);
public void setRestrictGetTables(boolean flag)
connection.setRestrictGetTables(flag);
public void setSessionTimeZone(String s)
throws SQLException
connection.setSessionTimeZone(s);
public void setStatementCacheSize(int i)
throws SQLException
connection.setStatementCacheSize(i);
public void setStmtCacheSize(int i)
throws SQLException
connection.setStmtCacheSize(i);
public void setStmtCacheSize(int i, boolean flag)
throws SQLException
connection.setStmtCacheSize(i, flag);
public void setSynchronousMode(boolean flag)
connection.setSynchronousMode(flag);
public void setTransactionIsolation(int i)
throws SQLException
connection.setTransactionIsolation(i);
public void setTypeMap(Map map)
throws SQLException
connection.setTypeMap(map);
public void setUsingXAFlag(boolean flag)
connection.setUsingXAFlag(flag);
public void setWrapper(OracleConnection oracleconnection)
connection.setWrapper(oracleconnection);
public void setXAErrorFlag(boolean flag)
connection.setXAErrorFlag(flag);
public void shutdown(int i)
throws SQLException
connection.shutdown(i);
public void startup(String s, int i)
throws SQLException
connection.startup(s, i);
Util class to get Wrapped Connections from
datasource
package ejbTesting;
// j2ee imports
import javax.naming.InitialContext;
import javax.sql.DataSource;
// sql imports
import java.sql.Connection;
// imports from Oracle Driver Classes
import oracle.jdbc.OracleConnection;
* Wrapper class for the DataSource Connection from Weblogic pool
public class DataSourceConnectionWrapper
     // datasource variable
     private static transient DataSource datasource = null;
     private static String dbName = "jdbc/workbench";
* Method that returns the database connection
     public static Connection getConnection()
          try
               // initialsing the datasource object
               initialiseDataSource ();
               // Getting a connection from the datasource
               Connection con = datasource.getConnection( );
               // wrapping it custom wrapper class and
               // returning the connection object
               return new WeblogicConnectionWrapper((OracleConnection)con);
          catch(Exception exception )
               exception.printStackTrace();
               return null;
     private static void initialiseDataSource( ) throws Exception
if ( datasource == null )
try
InitialContext ic = new InitialContext( );
datasource = (DataSource) ic.lookup( dbName );
catch (Exception ne )
throw new Exception( "NamingException while looking up DataSource with
JNDI name" +
dbName + ": \n" + ne.getMessage( ) );
Exception Stack Trace
The line 46 in DataSourceConnectionWrapper
corresponds to
return new WeblogicConnectionWrapper((OracleConnection)con);
Which I feel is logical as the connection which we get from Weblogic
datasource cannot be type casted to OracleConnection
java.lang.ClassCastException: weblogic.jdbc.pool.Connection
at ejbTesting.DataSourceConnectionWrapper.getConnection(DataSourceConnectionWrapper.java:46)

Using -pack + -standalone switches with Weblogic ?

Hi,
Does anyone know as to whats the issue with using -pack + -standalone switches with Weblogic ? Its been mentioned in the documentation that its not advisable to use those in combination when we build and EAR. We have been doing this in our project for atleast a month now and have not come across any issue due to this.
Please share your thoughts.
Thanks,
-Naga

Hi,
Does anyone know as to whats the issue with using -pack + -standalone switches with Weblogic ? Its been mentioned in the documentation that its not advisable to use those in combination when we build and EAR. We have been doing this in our project for atleast a month now and have not come across any issue due to this.
Please share your thoughts.
Thanks,
-Naga

Using saaj 1.2 with weblogic 8.1

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java.lang.IllegalArgumentException: endpoint should be String or URL
at weblogic.webservice.core.soap.SOAPConnectionImpl.call(SOAPConnectionImpl.java:43)[b]
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Hi,
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Regards,
Manish

Account Password Changed When Using OCI Drivers With WebLogic 6.0

Hello all,
Could be I am losing my mind but I saw some strange bahavior and I was wondering if anyone could offer an explination. We're running BEA WL6.0sp2 on an HPUX box with both an 8.1.7 client and server installation for development. We noticed that when we try to use the OCI driver to connect to our database, the password for our account is being changed on connection. This is definitely repeatable as we demonstrated it for the DBAs while they yelled at us. I highly doubt there is anything in WL that would cause the problem and everything works fine with the Thin drivers, with the JDrivers provided by BEA and with the credentials from SQL+.
Our problem is we need the Layer 2 OCI support. Is there something in the OCI client installation that would cause this behavior?

Hello all,
Could be I am losing my mind but I saw some strange bahavior and I was wondering if anyone could offer an explination. We're running BEA WL6.0sp2 on an HPUX box with both an 8.1.7 client and server installation for development. We noticed that when we try to use the OCI driver to connect to our database, the password for our account is being changed on connection. This is definitely repeatable as we demonstrated it for the DBAs while they yelled at us. I highly doubt there is anything in WL that would cause the problem and everything works fine with the Thin drivers, with the JDrivers provided by BEA and with the credentials from SQL+.
Our problem is we need the Layer 2 OCI support. Is there something in the OCI client installation that would cause this behavior?

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Hi!
I am using WebLogic Server 10.
As we know,WebLogic Server contains some jdbc drivers itself,but if we want to use another drivers besides them,what can we do?(I am using Oracle 11g,but WebLogic Server 10 doesn't contain JDBC support for it.)
Just copy the .jar files of the drivers to the directoty "WL_HOME/server/lib" or need to configure something else?
Thanks!
Huang

Hi!
I am using WebLogic Server 10.
As we know,WebLogic Server contains some jdbc drivers itself,but if we want to use another drivers besides them,what can we do?(I am using Oracle 11g,but WebLogic Server 10 doesn't contain JDBC support for it.)
Just copy the .jar files of the drivers to the directoty "WL_HOME/server/lib" or need to configure something else?
Thanks!
Huang

Oracle JDBC Drivers with Tomcat

I try to connect to Oracle DB with the JDBC Drivers throught Tomcat JNDI access.
I've tried with the oracle.jdbc.driver.OracleDriver and I have an UnsupportedOperationException when calling the getConnection() method on ma dataSource ref.
So I've tried with the oracle.jdbc.pool.OracleConnectionPoolDataSource and I have an java.sql.SQLException:
Cannot create JDBC driver of class
'oracle.jdbc.pool.OracleConnectionPoolDataSource' for connect URL
'jdbc:oracle:thin:@(description=(address=(host=meditws322)(protocol=tcp)(port=1521)
)(connect_data=(sid=HABILLE)))'
Please help I'm about to break down

Thanks for your reply. I use Oracle JDBC driver. The XSQLConfig.xml was changed to have the following setting:
<connection-manager>
<factory>oracle.xml.xsql.XSQLOracleDatasourceConnectionManager</factory>
</connection-manager>
I'm using Tomcat 4.1.x and Apache Commons DBCP Datasources with org.apache.commons.dbcp.BasicDataSourceFactory. The configuration file does set driverClassName to oracle.jdbc.driver.OracleDriver. All other queries embedded in .xsql files work great, I only have issues with queries containing CURSOR() statements. If I switch back to built-in database connectivity, by changing XSQLConfig.xml and connection parameters in .xsql files everything is working again. When I attempt to use DataSources, I get things like this "oracle.jdbc.driver.OracleResultSetImpl@15780d9" instead of nested XML. The non-nested portion of XML looks fine also, so it is retrieving the data from the database properly. Please let me know if I can provide any additional information that could help in resolving this. Thanks in advance!
-M-

CFMX8 - Enterprise OR Standard to use DataDirect JDBC drivers?

Simple question here, I hope? I am migrating an application
to CFMX8. This app connects to Informix. The best performance I've
seen so far to do so is using DataDirect's JDBC driver. What I know
is that DataDirect created a JDBC driver that ships with CFMX. What
I don't know is why it
seems CF somehow restricts access to that driver to
Enterprise edition?!? Below are steps I have done.
Using tech note
shown
here I did install the updated Macromedia drivers and created a
DSN to the Informix database, but upon trying to save the DSN
details, an error appeared stating:
quote:
java.sql.SQLException: Use of Macromedia JDBC Drivers is
restricted. Drivers can only be used with Macromedia server
products. Please check that your license supports the requested
driver.
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Standard Ed. vs. Enterprise Ed. issue? Or is something else the
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The Macromedia drivers are not available in standard edition
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I started out writing this up as a problem, but then I found the answer so I'm, posting a tip instead.
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<pre>
No EJBs found in the ejb-jar file 'test'. Please ensure the ejb-jar contains EJB declarations via an ejb-jar.xml deployment descriptor or at least one class annotated with the @Stateless, @Stateful or @MessageDriven EJB annotation.
</pre>
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Good Luck.
John Aronson

Hi John,
I am working on development an enterprise application using EJB 3.0 on Weblogic 10.
While developing, I am keeping all my classes (from ejb's as well as web) into APP-INF/classes directory. It is working fine for Web and ejb 2.0 packages, but ejb 3.0 packages, I get the following error when I keep my ejb 3.0 beans classes in APP-INF/classes directory.
No EJBs found in the ejb-jar file 'customer'. Please ensure the ejb-jar contains EJB declarations via an ejb-jar.xml deployment descriptor or at least one class annotated with the @Stateless, @Stateful or @MessageDriven EJB annotation.
One solution is to keep the classes under customer ejb directory, but I wan tto keep all the classes in APP-INF/classes directory so that when using Eclipse IDE I can output all compiled sources into APP-INF/classes directory.
Has anyone faced this situation? Any suggestions to fix this issue?

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I have followed the document “How To Support Dynamic JDBC Credentials” http://www.oracle.com/technology/products/jdev/howtos/10g/dynamicjdbchowto.html to connect to the database using Business Components, as the user who logs in the application. (Proxy)
The only matter is that as I could see, I cannot use the application server integrated security (with roles) to protect the web resources.
The main objective is to protect the web resources using Declarative J2EE authentication and authorization using the Data Base users (and roles). I have implemented the solution for the first part (authentication) using DBLoginModule (DBSystemLoginModule) from Frank Nimphius and Duncan Mills, it’s working OK, but I need the second part; how to use the user that is logged in as the PROXY user of the BC connection.
Using the DBLoginModule, and the “How To Support Dynamic JDBC Credentials” separates works fine, but I can’t make them work together.

Frank, Thanks a lot for your quick answer.
"Maybe you should look at using database proxy users with ADF BC so you can use the J2EE authenticated user principal as the database schema to connect through. I am working on documenting this approach, which however needs some more time of writing and testing."
Yes, that's exactly what I need!!!
Can you give me some tips about how to do that.. Do you have any idea of when you will finish that document?.
By the way, I'm using FORM authentication, but I don't know how to modify what’s in the “How To Support Dynamic JDBC Credentials” document, to use the J2EE authenticated user principal as the database schema to connect through.
One of the problems is that when using this approach, I cannot get the J2EE security to redirect to the login page...
Any help would be really appreciated

Mysql jdbc drivers with tomcat?

I am having trouble getting mySQL drivers to work on Tomcat. I have used the driver before with iPlanet Web Server, but I can't seem to get it to work with Tomcat. I am getting this error:
org.apache.jasper.JasperException: In <driver>, invalid driver class name: "org.gjt.mm.mysql.Driver"
The jar for the driver is in my WEB-INF/lib directory of my webapp. Seems like it isn't picking up the jar in the classpath. It was my understanding that jars in this dir were loaded automatically. Is there some way to log the classpath loaded in Tomcat?

run this in one of your jsps and see whats in your classpath.
System.getProperty("java.class.path",".");
I've never a had a problem with it before, but I'm using
mysql-connector-java-2.0.14

Using unbranded nVidia drivers with OC-edition MSI cards

Hello,
I'm using MSI GeForce 8800GT 512MB OC edition (NX8800GT T2D512E-OC) with branded MSI drivers.
Since MSI doesn't exactly release new drivers on daily basis (latest release - 175.16, 7/21) I was considering using unbranded drivers directly from nVidia.
I'd like to ask if there would/could be any performance decrease or any issues related to using unbranded drivers with my card.
My hardware retailer told me I *must* use branded drivers as it is an OC edition card, but he already stuffed me with bullcrap before so I'm asking here to confirm (or disconfirm, hopefully).
Thanks for any help in advance.

You can use any drivers
"My hardware retailer told me I *must* use branded drivers as it is an OC edition card, but he already stuffed me with bullcrap before so I'm asking here to confirm (or disconfirm, hopefully)."
Yes, that's rubbish

Using Cisco LocalDirector 400 with WebLogic

          Does anyone have any feedback on using Cisco LocalDirector with WebLogic 8.1 cluster
          - especially wityh SSL persistence
          Thanks
          Henry


Is there any specific issue you are trying to resolve?
          "Henry Nghiem" <[email protected]> wrote in message
          news:40f548d5$1@mktnews1...
          >
          > Does anyone have any feedback on using Cisco LocalDirector with WebLogic
          8.1 cluster
          > - especially wityh SSL persistence
          >
          > Thanks
          > Henry

How to use Multiple JDBC Drivers?

Hi,
I'm working with an application that connects to an Oracle 8 database and Oracle 10 databases as a single user/schema and then the application users all share the single Oracle user. When we use an Oracle 8 JDBC driver, then a module that inserts a large number of records (1500+) into an oracle table behaves inconsistently and either times out, pauses inserting records for exactly 1 hour, or throws an error. It also seems somewhat inconsistent from user to user.
The problem goes away when we use an Oracle 10 or Oracle 11 JDBC driver. However, the Oracle 10 JDBC driver has a problem with truncating the hh:mi:ss from datetime column types to 00:00:00. This is a known Oracle error and I know there is a flag that can fix this with the Oracle 10 driver. However, with the way the JDBC driver gets installed in the application, we are unable to set that flag.
Oracle 11 JDBC driver also doesn't have the Oracle 8 issue inserting a large number of records. However, we need to connect to an Oracle 8 database and Oracle 11 JDBC does not support that. The database is still active but being retired soon so no chance of upgrading to a newer Oracle version.
I asked on the application forum (it's SAP Manufacturing Intelligence and Integration - MII) and was told the following. Data Server is a name for the connection to the database.
"If the class packages are the same (assuming so since all of the oracle drivers I've seen use the same driver) then you can't have 2 at the same time, since they will overlap and you can't prioritize or point one data server to 8 and the other to 11."
My experiments with trying to use two drivers have also shown this to be the case for what I tried.
Any ideas or thoughts of how to make this work? We are using a JDK 1.5.
Thanks for the help.
Kerby Johnson

The most reliable way would be to load each driver (and all code using it) using its own classloader.
But that would likely be overly complicated.
The most viable solution will likely be (especially as this is a short term project, you say it's going to be retired soon) to ensure a commit after every smaller subset of the total data volume and keep using the Oracle 8 drivers.
Try forcing a commit after say every 100 records and see if you still have the timeout problems. Most likely this will take care of your problems at the cost of a slight performance decrease (but better somewhat less than optimal performance than risk database corruption or crashing applications, right?).

Using Oracle thin driver with Weblogic 6.1

hi all,
i am trying to create a ConnectionPool using WLS6.1 and Oracle 8.0.5.
Since i cannot use the weblogic driver (due to the old version of oracle that
i have)
i am trying to use instead the oracle thin driver.
i configured my pool as follows:
URL jdbc:oracle:[email protected]:1521:ORC1
Driver oracle.jdbc.Driver.OracleDriver
Propeties user=SCOTT
when i try to assing the created pool to a server (using the 'Target' link),
i always got this exception
weblogic.management.DeploymentException: Error creating connection pool - with
n
ested exception:
[weblogic.common.ResourceException: Cannot load driver class: oracle.jdbc.Driver
.OracleDriver]
at weblogic.jdbc.common.JDBCService.addDeployment(JDBCService.java:110)
at weblogic.management.mbeans.custom.DeploymentTarget.addDeployment(Depl
oymentTarget.java:329)
at weblogic.management.mbeans.custom.DeploymentTarget.addDeployment(Depl
oymentTarget.java:144)
at java.lang.reflect.Method.invoke(Native Method)
at weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMB
eanImpl.java:608)
at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl
.java:592)
at weblogic.management.internal.ConfigurationMBeanImpl.invoke(Configurat
ionMBeanImpl.java:352)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
55)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
23)
at weblogic.management.internal.ConfigurationMBeanImpl.updateConfigMBean
s(ConfigurationMBeanImpl.java:484)
at weblogic.management.internal.ConfigurationMBeanImpl.invoke(Configurat
ionMBeanImpl.java:354)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
55)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
23)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:449)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:190)
at $Proxy7.addDeployment(Unknown Source)
at weblogic.management.internal.DynamicMBeanImpl.updateDeployments(Dynam
icMBeanImpl.java:1448)
at weblogic.management.internal.DynamicMBeanImpl.setAttribute(DynamicMBe
anImpl.java:858)
at weblogic.management.internal.DynamicMBeanImpl.setAttribute(DynamicMBe
anImpl.java:810)
at weblogic.management.internal.ConfigurationMBeanImpl.setAttribute(Conf
igurationMBeanImpl.java:288)
at com.sun.management.jmx.MBeanServerImpl.setAttribute(MBeanServerImpl.j
ava:1356)
at com.sun.management.jmx.MBeanServerImpl.setAttribute(MBeanServerImpl.j
ava:1331)
at weblogic.management.internal.MBeanProxy.setAttribute(MBeanProxy.java:
303)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:185)
at $Proxy75.setTargets(Unknown Source)
at java.lang.reflect.Method.invoke(Native Method)
at weblogic.management.console.info.FilteredMBeanAttribute.doSet(Filtere
dMBeanAttribute.java:89)
at weblogic.management.console.actions.mbean.DoEditMBeanAction.perform(D
oEditMBeanAction.java:116)
at weblogic.management.console.actions.internal.ActionServlet.doAction(A
ctionServlet.java:167)
at weblogic.management.console.actions.internal.ActionServlet.doPost(Act
ionServlet.java:85)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:265)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:200)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppSe
rvletContext.java:2456)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestIm
pl.java:2039)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:139)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
--------------- nested within: ------------------
weblogic.management.DistributedOperationUpdateException: Error creating connecti
on pool - with nested exception:
[weblogic.management.DeploymentException: Error creating connection pool - with
nested exception:
[weblogic.common.ResourceException: Cannot load driver class: oracle.jdbc.Driver
.OracleDriver]]
at weblogic.management.internal.ConfigurationMBeanImpl.updateConfigMBean
s(ConfigurationMBeanImpl.java:494)
at weblogic.management.internal.ConfigurationMBeanImpl.invoke(Configurat
ionMBeanImpl.java:354)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
55)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
23)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:44>
However, i set the CLASSPATH & PATH of my startWebLogic.cmd as follows:
set PATH=c:\orant\bin;d:\bea\wlserver6.1\bin\oci817_8;.\bin;%PATH%
set CLASSPATH=.;.\lib\weblogic_sp.jar;.\lib\weblogic.jar;.\samples\eval\cloudscape\lib\cloudscape.jar;.\config\examples\serverclasses;c:\orant\jdbc\lib\classes111.zip
AND, i have written a small program that uses JDBC (without weblogic) to query
a table
on the Oracle (using the pool's URL in the properties for getting the Connection
conn = DriverManager.getConnection("jdbc:oracle:thin:@127.0.0.1:1521:ORC1", "scott",
"tiger");
and that program works fine.
Can anyone tell me what is wrong?? it seems that everything is in order (with
respect to CLASSPATH, PATH etc..)
hope someone can solve my problem
thanx and regards
marco

your url should be
jdbc:oracle:thin:@127.0.0.1:1521:ORC1
notice the ':' before the '@'.
sree
"Marco" <[email protected]> wrote in message
news:[email protected]...
Hi Sree,
You have to place the classes11.zip file in the beginning of the classpath.i did it. my CLASSPATH is now
CLASSPATH=c:\orant\jdbc\lib\classes111.zip;.;.\lib\weblogic_sp.jar;.\lib\web
logic.jar;.\samples\eval\cloudscape\lib\cloudscape.jar;.\config\examples\ser
verclasses
But now, when i assign the target, the exception is:
--------------- nested within: ------------------
weblogic.management.DistributedOperationUpdateException: Error creating
connecti
on pool - with nested exception:
[weblogic.management.DeploymentException: Error creating connection pool -
with
nested exception:
[weblogic.common.ResourceException: weblogic.common.ResourceException:
Could not create pool connection. The DBMS driver exception was:
java.sql.SQLException: Sub Protocol must be specified in connection URL
        at oracle.jdbc.dbaccess.DBError.check_error(DBError.java:352)
        at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:102)
        at
weblogic.jdbc.common.internal.ConnectionEnvFactory.makeConnection(Con
nectionEnvFactory.java:192)
        at
weblogic.jdbc.common.internal.ConnectionEnvFactory.createResource(Con
nectionEnvFactory.java:134)
        at
weblogic.common.internal.ResourceAllocator.makeResources(ResourceAllo
cator.java:698)
        at
weblogic.common.internal.ResourceAllocator.<init>(ResourceAllocator.j
ava:282)
        at
weblogic.jdbc.common.internal.ConnectionPool.startup(ConnectionPool.j
ava:629)
        at
weblogic.jdbc.common.JDBCService.addDeployment(JDBCService.java:107)
        at
weblogic.management.mbeans.custom.DeploymentTarget.addDeployment(Depl
oymentTarget.java:329)
        at
weblogic.management.mbeans.custom.DeploymentTarget.addDeployment(Depl
oymentTarget.java:144)
        at java.lang.reflect.Method.invoke(Native Method)
        at
weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMB
eanImpl.java:608)
        at
weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl
java:592)
        at
weblogic.management.internal.ConfigurationMBeanImpl.invoke(Configurat
ionMBeanImpl.java:352)
        at
com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
55)
        at
com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
23)
        at
weblogic.management.internal.ConfigurationMBeanImpl.updateConfigMBean
s(ConfigurationMBeanImpl.java:484)
        at
weblogic.management.internal.ConfigurationMBeanImpl.invoke(Configurat
ionMBeanImpl.java:354)
        at
com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
55)
        at
com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
23)
        at
weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:449)
        at
weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:190)
        at $Proxy8.addDeployment(Unknown Source)
        at weblogic.management.internal.DynamicMB>
what is SubProtocol???
my ConnectionPool is configured as follows:
Name:     MyJDBC Connection Pool
URL :     jdbc:oracle:[email protected]:1521:ORC1
Driver:   oracle.jdbc.driver.OracleDriver
Properties: user=SCOTT
Password : tiger
can u help me???
thanx in advance and regards
   marco
>
>
at
weblogic.jdbc.common.JDBCService.addDeployment(JDBCService.java:110)
at
weblogic.management.mbeans.custom.DeploymentTarget.addDeployment(Depl
oymentTarget.java:329)
at
weblogic.management.mbeans.custom.DeploymentTarget.addDeployment(Depl
oymentTarget.java:144)
at java.lang.reflect.Method.invoke(Native Method)
at
weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMB
eanImpl.java:608)
at
weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl
java:592)
at
weblogic.management.internal.ConfigurationMBeanImpl.invoke(Configurat
ionMBeanImpl.java:352)
at
com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
55)
at
com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
23)
at
weblogic.management.internal.ConfigurationMBeanImpl.updateConfigMBean
s(ConfigurationMBeanImpl.java:484)
at
weblogic.management.internal.ConfigurationMBeanImpl.invoke(Configurat
ionMBeanImpl.java:354)
at
com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
55)
at
com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
23)
at
weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:449)
at
weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:190)
at $Proxy7.addDeployment(Unknown Source)
at
weblogic.management.internal.DynamicMBeanImpl.updateDeployments(Dynam
icMBeanImpl.java:1448)
at
weblogic.management.internal.DynamicMBeanImpl.setAttribute(DynamicMBe
anImpl.java:858)
at
weblogic.management.internal.DynamicMBeanImpl.setAttribute(DynamicMBe
anImpl.java:810)
at
weblogic.management.internal.ConfigurationMBeanImpl.setAttribute(Conf
igurationMBeanImpl.java:288)
at
com.sun.management.jmx.MBeanServerImpl.setAttribute(MBeanServerImpl.j
ava:1356)
at
com.sun.management.jmx.MBeanServerImpl.setAttribute(MBeanServerImpl.j
ava:1331)
at
weblogic.management.internal.MBeanProxy.setAttribute(MBeanProxy.java:
303)
at
weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:185)
at $Proxy75.setTargets(Unknown Source)
at java.lang.reflect.Method.invoke(Native Method)
at
weblogic.management.console.info.FilteredMBeanAttribute.doSet(Filtere
dMBeanAttribute.java:89)
at
weblogic.management.console.actions.mbean.DoEditMBeanAction.perform(D
oEditMBeanAction.java:116)
at
weblogic.management.console.actions.internal.ActionServlet.doAction(A
ctionServlet.java:167)
at
weblogic.management.console.actions.internal.ActionServlet.doPost(Act
ionServlet.java:85)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:265)
at
weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:200)
at
weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppSe
rvletContext.java:2456)
at
weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestIm
pl.java:2039)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:139)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
--------------- nested within: ------------------
weblogic.management.DistributedOperationUpdateException: Error creating
connecti
on pool - with nested exception:
[weblogic.management.DeploymentException: Error creating connection pool
with
nested exception:
[weblogic.common.ResourceException: Cannot load driver class:
oracle.jdbc.Driver
OracleDriver]]
at
weblogic.management.internal.ConfigurationMBeanImpl.updateConfigMBean
s(ConfigurationMBeanImpl.java:494)
at
weblogic.management.internal.ConfigurationMBeanImpl.invoke(Configurat
ionMBeanImpl.java:354)
at
com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
55)
at
com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
23)
at
weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:44>
However, i set the CLASSPATH & PATH of my startWebLogic.cmd as follows:
set PATH=c:\orant\bin;d:\bea\wlserver6.1\bin\oci817_8;.\bin;%PATH%
set
CLASSPATH=.;.\lib\weblogic_sp.jar;.\lib\weblogic.jar;.\samples\eval\cloudsc
a
pe\lib\cloudscape.jar;.\config\examples\serverclasses;c:\orant\jdbc\lib\clas
ses111.zip
AND, i have written a small program that uses JDBC (without weblogic)
to
query
a table
on the Oracle (using the pool's URL in the properties for getting the
Connection
conn = DriverManager.getConnection("jdbc:oracle:thin:@127.0.0.1:1521:ORC1",
"scott",
"tiger");
and that program works fine.
Can anyone tell me what is wrong?? it seems that everything is in order
(with
respect to CLASSPATH, PATH etc..)
hope someone can solve my problem
thanx and regards
marco

Using Oracle8 JDBC Drivers with WebLogic 5.1

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