JDBC-ODBC Bridge Performance To MS Access

Hey all, I'm running a Java app that extracts an entire table (set of tables) from Oracle and copies them into Access. The easiest implementation has been to use a DSN-less Type 1 JDBC-ODBC bridge connection to Access, but unfortunately the inserts are taking too long.
I have tried both Statement and PreparedStatement approaches, with both single row and batch updates. Some of the performance times, relative to the computer I am on (PIII 1 gHz with 256 RAM), are as follows:
Via Batch, about 8min, 15 seconds per 10,000 rows.
Via Single Row updates/inserts, about 52 minutes for 45,000 rows.
I've tried alot of varieties with batch, but 10,000 seemed to be the best. The largest table is only 45,000 rows (right now), but has the potential to grow much larger (obviously). This application needs to backup 4 databases, each with N tables (current N=7, but will expand). I'm trying to knock down the times and increase performance, but am not sure what is "reasonable" for Type 1 connections with JDBC. I've seen third party drivers, Type 3, for Access...but don't want to run the middle tier server for filtering request through. I'd rather use Type 4, but can't seem to find any for Access.
Any suggestions? Recommendations? Let me know! Thanks all! :)

Hi,
If its a backup/batch process why are you worrying about performance, its only an offline process :) even if has to be triggered during an OLTP run this task asynchronously.
I dont know why you have chosen java to do this ??? any way prepared statements with non scrollable resultsets will increase you performance better tha scrollable normal statements.
Rajesh

Similar Messages

JDBC-ODBC Bridge Drivers and Microsoft Access

Are there any good tutorials on setting this up? Forgive me if there is one on this site - I couldn't find it. I just know (from some other sites) that it can be a pain to set up and get working right.

I mean installing and configuring JDBC-ODBC to be
able to connect to Access...I know about JDBC and
it's API. I just need to know how to configure
everything so that I can use the API.If you have a version of windows (at least back to 95) that doesn't have the MS Access ODBC driver and/or doesn't have the ODBC shell then something is wrong with your windows.

Access MS-Access using JDBC ODBC bridge from Sun AMD64

Hi,
We are trying to configure a communication channel using the JDBC adapter. We are setting the driver to the JDBC-ODBC bridge driver and trying to access an MS Acess database from the PI server(sun amd64). When we set the driver to the JDBC-ODBC bridge, the J2EE engine tries to restart immediately and does not start. The std_server.out contains the following error:
Service com.sap.aii.adapter.jdbc.svc started. (234 ms).
1016 sun.io.CharToByteASCII::convert (370 bytes)
1017 ! com.sap.sql.jdbc.common.CommonPreparedStatement::close (119
bytes)
ld.so.1: jlaunch: fatal: relocation error:
file /usr/j2se/jre/lib/amd64/libJdbcO
dbc.so: symbol SQLAllocEnv: referenced symbol not found
Has anybody been able to configure the JDBC-ODBC bridge driver for MS Access? Also, has anybody used the database vendor(MS) drivers? If so, where are they available.
Thanks in advance
Vipin

Hi
Please go through below links that would be helpful to you
SAP Network Blog: Connecting to MS Access using receiver JDBC Adapter (Without DSN)
/people/sameer.shadab/blog/2005/10/24/connecting-to-ms-access-using-receiver-jdbc-adapter-without-dsn
/people/sap.user72/blog/2005/06/01/file-to-jdbc-adapter-using-sap-xi-30
If required Try the following driver. I havent used it but its available.
HXTT Access is such a type 4 driver at http://www.hxtt.net/en/software/access/document.html .
Thanks
Swarup

How to create db conn for JDBC-ODBC Bridge for MS Access in ADF APP?

Sir,
How to create db conn for JDBC-ODBC Bridge for MS Access in ADF APP?
Regards

Hello Every Body!
I succeeded in getting connect to the ms access database in adf application in jdeveloper as below:
First in control panel to to admin tools and go to data source(odbc) and create system dsn as bellow pic
Then go to jdeveloper resources ide conn and then database and new database conn and then select jdbc-odbc briddge and then give custom jdbc url as bellow pic
Cheers
tanvir

MS SQL Server 7 thru JDBC:ODBC bridge

Hi,
I am trying to access MS SQL server 7 thru JDBC ODBC bridge. I am finding my varchar data is being truncated to 255 characters. Any help on this would be appreciated.

Any body know of a good type 4 jdbc driver for SQL
Server 7. There is one for SQL server 2000
downloadable from micrsoft site, but does it work for
sql server 7 too ?Older betas of this driver suported SQL Server 7, but I believe the plan is to specifically remove that capability in its final release.
My biased opinion would be to try the driver from DataDirect. http://www.ddtek.com Its their driver (an older version) that Microsoft has licensed for MS SQl 2000.
Getting it from DataDirect has a couple obvious advantages:
1. Its a later, more stable, better performing version
2. It will continue to Support MS SQL 7
3. It's suported by 24/7 phone,email and web tech support.
4. And, early this week, you should be able to get the latest 3.0 release which promises to be even more robust, in addition to conforming to the new specs.
5. its not free, but then again- you get what you pay for...

Oracle RDB Driver fails with JDBC/ODBC Bridge

Has anyone experienced problems using the latest Oracle RDB
Driver (3.0.2.0) with the JDBC/ODBC Bridge.
We have been using the Oracle ODBC Driver for RDB (2.10.17)
successfully on NT, but it is not supported on W2K. The new
drivers work fine for Access etc., but fail with the bridge.
Specifically, you can step thru a result set, but getObject()
returns null for all fields.
Any suggestions?
Joe

This forum is for general suggestions and feedback about the OTN
site. For technical question about an Oracle product, you can
select the appropriate discussion forum in our 'Discussions'
section at: http://forums.oracle.com/forums/homepage.jsp
Best regards, OTN Team

JDBC-ODBC Bridge to SPSS data files - Result Set Type is not supported

Hello,
As mentioned in the subject I am trying to read SPSS data files using the SPSS 32-Bit data driver, ODBC and the JDBC-ODBC Bridge.
Using this SPSS Driver I manged to read the data directly into an MS-SQL Server using:
SELECT [...] FROM
OPENROWSET(''MSDASQL.1'',''DRIVER={SPSS 32-BIT Data Driver (*.sav)};DBQ=' SomePathWhereTheFilesAre';SERVER=NotTheServer'', ''SELECT 'SomeSPSSColumn' FROM "'SomeSPSSFileNameWithoutExt'"'') AS a
This works fine!
Using Access and an ODBC System DNS works for IMPORTING but NOT for LINKING.
It is even possible to read the data using the very slow SPSS API.
However, when it comes to JDBC-ODBC the below code does only work in part. The driver is loaded successfully, but when it comes to transferring data into the resultset object the error
SQLState: null
Result Set Type is not supported
Vendor: 0
occurs.
The official answer from SPSS is to use .Net or to use their implementation with Python in their new version 14.0. But this is obviously not an option when you want to use only Java.
Does anybody have experience with SPSS and JDBC-ODBC??? I have tried the possible ResultSet Types, which I took from:
http://publib.boulder.ibm.com/infocenter/db2luw/v8/index.jsp?topic=/com.ibm.db2.udb.doc/ad/rjvdsprp.htm
and none of them worked.
Thank you in advance for your ideas and input & stay happy!
Here the code without all the rest of the class arround it:
// Module: SimpleSelect.java
// Description: Test program for ODBC API interface. This java application
// will connect to a JDBC driver, issue a select statement
// and display all result columns and rows
// Product: JDBC to ODBC Bridge
// Author: Karl Moss
// Date: February, 1996
// Copyright: 1990-1996 INTERSOLV, Inc.
// This software contains confidential and proprietary
// information of INTERSOLV, Inc.
public static void main1() {
String url   = "jdbc:odbc:SomeSystemDNS";
String query = "SELECT SomeSPSSColumn FROM 'SomeSPSSFileName'";
try {
    // Load the jdbc-odbc bridge driver
    Class.forName ("sun.jdbc.odbc.JdbcOdbcDriver");
    DriverManager.setLogStream(System.out);
    // Attempt to connect to a driver. Each one
    // of the registered drivers will be loaded until
    // one is found that can process this URL
    Connection con = DriverManager.getConnection (url);
    // If we were unable to connect, an exception
    // would have been thrown. So, if we get here,
    // we are successfully connected to the URL
    // Check for, and display and warnings generated
    // by the connect.
    checkForWarning (con.getWarnings ());
    // Get the DatabaseMetaData object and display
    // some information about the connection
    DatabaseMetaData dma = con.getMetaData ();
    System.out.println("\nConnected to " + dma.getURL());
    System.out.println("Driver       " +
      dma.getDriverName());
    System.out.println("Version      " +
      dma.getDriverVersion());
    System.out.println("");
    // Create a Statement object so we can submit
    // SQL statements to the driver
    Statement stmt = con.createStatement(ResultSet.TYPE_FORWARD_ONLY ,ResultSet.CONCUR_READ_ONLY);
    // Submit a query, creating a ResultSet object
    ResultSet rs = stmt.executeQuery (query);
    // Display all columns and rows from the result set
    dispResultSet (rs);
    // Close the result set
    rs.close();
    // Close the statement
    stmt.close();
    // Close the connection
    con.close();
}

Thank you for your reply StuDerby!
Actually the above script was before, as you suggested, leaving the ResultSetTeype default. This did not work...
I am getting gray hair with SPSS - in terms of connectivity and "integratebility" none of their solutions offered is sufficient from my point of view.
Variable definitions can only be read by the slow API, data can only be read by Python or Microsoft Products... and if you want to combine both you are in big trouble. I can only assume that this is a company strategy to sell their Dimensions Platform to companies versus having companies developping their applications according to business needs.
Thanks again for any furthur suggestions and I hope, that some SPSS Developper will see this post!
Cheers!!

Problem using Jdbc-Odbc Bridge

Hi,
I am using Java 2 SDK and I am trying to access MS Access database on my machine using Jdbc-Odbc bridge. I have set up the DSN in ODBC. But I get the following error when I run my program -
'No Suitable Driver'
Here's my code snippet-
Class.forName ("sun.jdbc.odbc.JdbcOdbcDriver");
String dsn = "jdbc:odbc:DriverInfoDB";
Connection con = DriverManager.getConnection(dsn,"","");
con.setAutoCommit(false);
Statement stmt;
String query = null; // SQL select string
ResultSet rs; // SQL query results
stmt = con.createStatement();
.....etc etc...
Where is the error in this code??
Help Needed!!
Thanks
Vivek.

try
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con = DriverManager.getConnection(dsn,"guest","guest");
OR DriverManager.getConnection(dsn);
System.out.println("Conection's opened");
catch(ClassNotFoundException cnfe)
System.err.println(cnfe);
catch(SQLException sqle)
System.err.println(sqle);
try that code and double check you DSN Name . it's a good practice to greate a system DSN.
i hope that helps.
FEEL FREE TO ASK. WON'T BITE U
ABDUL

About JDBC ODBC bridge

I'm developing an application using EJBs in a development environment with Sun Application Server, Sql Server and NetBeans IDE 4.1. I'm using entity beans and session beans in my application. But, when I try to connect to database using a Servlet or JSP with the session beans, the connection with database could not be established. This is my problem!!!

First, you probably shouldn't use the JDBC/ODBC bridge. Any serious and many non-serious databases have real drivers. Is there anything but Access that really needs the bridge...? Use the jTds driver (google for it). Or just last week Microsoft beta'ed a new JDBC driver for MSSQL; no idea how good it is. Some smalltalk on that: http://www.theserverside.com/news/thread.tss?thread_id=35063
Second, what error do you get?
If it is "connection refused", here is my standard first aid check list:
- Check host name in connect string.
- Check port number in connect string.
- Try numeric IP address of server host in connect string, in case name server is hosed.
- Are there any firewalls between client and server blocking the port.
- Check that the db server is running.
- Check that the db server is listening to the port. On the server, try: "telnet localhost the-port-number". Or "netstat -an", there should be a listening entry for the port.
- Try "telnet serverhost the-port-number" from the client, to see if firewalls are blocking it.
- If "telnet" fails: try it with the numeric ip address.
- If "telnet" fails: does it fail immediately or after an obvious timeout? How long is the timeout?
- Does the server respond to "ping serverhost" or "telnet serverhost" or "ssh serverhost"?

SQL Developer 2.1.1 : JDBC/ODBC Bridge

Hi, I am running SQL Developer 2.1.1 and would like to to access databases other than those formally supported.
I am happy to use the JDBC/ODBC Bridge - although additional JDBC connectivity would be ideal, I gather that it is not supported.
Googling, and searching on this forum, implies that I should install the appropriate JDBC driver for the Bridge, list it on the third party JDBC drivers Preferences page, and that a 'Create Connection' dialog JDBC tab would then appear on restarting SQL Developer, as happens when you install the supported MySQL JDBC driver, for example.
I am sorry to be dim, but I cannot track down a jar file containing the JDBC/ODBC Bridge that is supported by SQL Developer to the extent of enabling the JDBC tab. The rt.jar shipped in SQL Developer's JRE does not do the job. Checking for updates from the Help menu lists nothing that looks even remotely relevant. Where should I be looking?
Thanks a lot
Mandy Shaw
Edited by: 845622 on Mar 18, 2011 10:59 AM - Clarified - sorry

The additional connection types only appear for supported databases.
I haven't tried this, but I vaguely remember some discussions from a long time ago.
Make sure the jar file (and any supporting DLLs) are on your classpath (probably dropping them in the extensions directory will do it) and then in the new connection dialog select 'Advanced' connection type. This lets you enter a JDBC URL in any format so you can enter what is required for your additional databases.
If this works, the most it will get you is a SQL Worksheet with no completion insight or syntax checking. Because SQL Developer doesn't know how to use the database catalogue, the object navigator won't work.

JDBC-ODBC Bridge seems to slow down after a while

Hi,
I've got a weird problem going on with an application I'm writing. I hope someone can tell me what I'm doing wrong.
The problem I'm encountering is in he code shown below. The function getAllGamesForATeam is creating a list of items in an ArrayList and passing it back to an Event handler so that I can put it in the session of a servlet. The first time I run this code, it is fast. Fast enough to use on a servlet. The second time it runs, it is MUCH slower...too slow to use on a servlet. The third time it runs, it gets even worse.
I am using the JDBC-ODBC bridge to access my database which is in Access 97. I do have connection pooling enabled on the database. Still it is slow.
If you have any ideas, I would appreciate it. Here's the code:
// GameBean.java
// A class to represent a Game in my College Hockey Program
// Based on Team and League tables.
package MyBeans;
import java.io.*;
import java.sql.*;
import java.util.*;
import javax.servlet.http.*;
* This is the Java bean used to get and display information about
* items for sale in our web based store.
* @version 1.0.0 08/13/2001
* @author Kevin Yetman
* @see DBBeanBase
public class GameBean extends DBBeanBase
* Default constructor, creates an empty {@link GameBean}.
public GameBean()
super();
* Copy constructor. This constructor creates a {@link GameBean} object
* that is initially populated with a copy of the {@link java.util.Map} specified
* as a parameter to this constructor. All {@link java.util.Map} Maps should
* implement a copy constructor.
* @param copyThisMap the {@link Map} used to initialize this {@link GameBean} object.
public GameBean(Map copyThisMap)
super(copyThisMap);
* This constructor creates an {@link GameBean} object and
* populates it with the fields in a {@link java.sql.ResultSet}.
* @param rs The {@link java.sql.ResultSet} object used to populate
* this class with information about an item.
* @throws java.sql.SQLException if there is an error iterating the
* {@link java.sql.ResultSet}.
protected GameBean(ResultSet rs) throws SQLException
super(rs);
* This constructor creates an {@link GameBean} object associated with the
* specified item id. If there is no record in the data source with the
* specified item id, an exception is thrown.
* @param conneciton The {@link java.sql.Connection} object used to execute
* the select statement that will retrieve the item information.
* @param iLeagueId specifies the league id used to populate this object.
* @throws java.sql.SQLException if there is an error selecting the item
* information.
* @throws java.lang.Exception if the item id is invalid.
public GameBean(Connection connection, int iGameId) throws SQLException, Exception
super();
String strSQL="SELECT GameIndex, Month, Day, Year, HomeTeamIndex, VisitorTeamIndex, HomeTeamScoredFirst, LeagueGame, NeutralSiteGame, PlayoffGame, HomeTeamGoals, VisitorTeamGoals FROM Game WHERE GameIndex=" + iGameId;
Statement statement = connection.createStatement();
ResultSet rs = statement.executeQuery(strSQL);
if (rs.next())
populateFromResultSet(rs);
else
throw new Exception("Invalid game Id: " + iGameId);
putInTeamNames(connection);
* This method returns the league's index.
* @return the league's index.
public void putInTeamNames(Connection connection)
throws SQLException
String strSQL="SELECT TeamName FROM Team WHERE TeamIndex=" + getHomeTeamIndex();
Statement statement = connection.createStatement();
ResultSet rs = statement.executeQuery(strSQL);
if( rs.next() )
put("HOMETEAMNAME", rs.getString("TeamName"));
strSQL="SELECT TeamName FROM Team WHERE TeamIndex=" + getVisitorTeamIndex();
rs=statement.executeQuery(strSQL);
if( rs.next() )
put("VISITORTEAMNAME", rs.getString("TeamName"));
* This method returns the league's index.
* @return the league's index.
public String getGameIndex()
return get("GAMEINDEX").toString();
* This method returns the name of the league.
* @return the name of the league.
public String getMonth()
return get("MONTH").toString();
* This method returns the name of the league.
* @return the name of the league.
public String getDay()
return get("DAY").toString();
* This method returns the name of the league.
* @return the name of the league.
public String getYear()
return get("YEAR").toString();
* This method returns the name of the league.
* @return the name of the league.
public String getHomeTeamName()
return get("HOMETEAMNAME").toString();
* This method returns the league's nickname.
* @return the league's nickname.
public String getVisitorTeamName()
return get("VISITORTEAMNAME").toString();
* This method returns the name of the league.
* @return the name of the league.
public String getHomeTeamIndex()
return get("HOMETEAMINDEX").toString();
* This method returns the league's nickname.
* @return the league's nickname.
public String getVisitorTeamIndex()
return get("VISITORTEAMINDEX").toString();
* This method returns the league's nickname.
* @return the league's nickname.
public String getLeagueGame()
return get("LEAGUEGAME").toString();
* This method returns the league's nickname.
* @return the league's nickname.
public String getNeutralSiteGame()
return get("NEUTRALSITEGAME").toString();
* This method returns the league's nickname.
* @return the league's nickname.
public String getPlayoffGame()
return get("PLAYOFFGAME").toString();
* This method returns the league's nickname.
* @return the league's nickname.
public String getHomeTeamScoredFirst()
return get("HOMETEAMSCOREDFIRST").toString();
* This method returns the league's nickname.
* @return the league's nickname.
public String getHomeTeamGoals()
return get("HOMETEAMGOALS").toString();
* This method returns the league's automatic bids.
* @return the league's automatic bids.
public String getVisitorTeamGoals()
return get("VISITORTEAMGOALS").toString();
* This method returns a textual representation of this {@link ItemBean}.
* @return a textual representation of this {@link ItemBean}.
public String toString()
StringBuffer sb=new StringBuffer();
sb.append("GameIndex: " + getGameIndex() + "\n");
sb.append("HomeTeamScoredFirst: " + getHomeTeamScoredFirst() + "\n");
sb.append("PlayoffGame: " + getPlayoffGame() + "\n");
sb.append("LeagueGame: " + getLeagueGame() + "\n");
sb.append("NeutralSiteGame: " + getNeutralSiteGame() + "\n");
sb.append("HomeTeamIndex: " + getHomeTeamIndex() + "\n");
sb.append("VisitorTeamIndex: " + getVisitorTeamIndex() + "\n");
sb.append("HomeTeamName: " + getHomeTeamName() + "\n");
sb.append("VisitorTeamName: " + getVisitorTeamName() + "\n");
sb.append("Month: " + getMonth() + "\n");
sb.append("Day: " + getDay() + "\n");
sb.append("Year: " + getYear() + "\n");
return sb.toString();
* This method returns a {@link java.util.Collection} of all of the teams
* in the data source.
* @param connection The {@link java.sql.Connection} object used to execute
* the select statement that will retrieve the teams.
* @return a {@link java.util.Collection} of all of the teams in the data source.
* @throws java.sql.SQLException if there is an error selecting the items.
public static Collection getAllGames(Connection connection) throws SQLException
Collection col=new ArrayList(1100);
String strSQL = "SELECT GameIndex, Month, Day, Year, HomeTeamIndex, VisitorTeamIndex, HomeTeamScoredFirst, LeagueGame, NeutralSiteGame, PlayoffGame, HomeTeamGoals, VisitorTeamGoals FROM Game";
Statement statement = connection.createStatement();
ResultSet rs = statement.executeQuery(strSQL);
while(rs.next())
GameBean currentGame=new GameBean(rs);
currentGame.putInTeamNames(connection);
col.add(currentGame);
return col;
* This method returns a {@link java.util.Collection} of all of the teams
* in the data source.
* @param connection The {@link java.sql.Connection} object used to execute
* the select statement that will retrieve the teams.
* @return a {@link java.util.Collection} of all of the teams in the data source.
* @throws java.sql.SQLException if there is an error selecting the items.
public static Collection getAllGamesForALeague(Connection connection, String leagueNickName) throws SQLException
Collection col=new ArrayList(500);
String strSQL = "SELECT LeagueIndex FROM League WHERE LeagueNickName='" + leagueNickName + "'";
Statement statement = connection.createStatement();
ResultSet rs = statement.executeQuery(strSQL);
int leagueIndex=-1;
if( rs.next() )
leagueIndex=rs.getInt("LeagueIndex");
strSQL = "SELECT GameIndex, Month, Day, Year, HomeTeamIndex, VisitorTeamIndex, HomeTeamScoredFirst, LeagueGame, NeutralSiteGame, PlayoffGame, HomeTeamGoals, VisitorTeamGoals FROM Game";
strSQL+=" WHERE (HomeTeamIndex IN (SELECT TeamIndex FROM Team WHERE LeagueIndex=" + leagueIndex + ")) OR";
strSQL+=" (VisitorTeamIndex IN (SELECT TeamIndex FROM Team WHERE LeagueIndex=" + leagueIndex + "))";
strSQL+=" ORDER BY Year, Month, Day";
statement = connection.createStatement();
rs = statement.executeQuery(strSQL);
while(rs.next())
GameBean currentGame=new GameBean(rs);
currentGame.putInTeamNames(connection);
System.out.println(currentGame.getGameIndex());
col.add(currentGame);
return col;
* This method returns a {@link java.util.Collection} of all of the teams
* in the data source.
* @param connection The {@link java.sql.Connection} object used to execute
* the select statement that will retrieve the teams.
* @return a {@link java.util.Collection} of all of the teams in the data source.
* @throws java.sql.SQLException if there is an error selecting the items.
public static Collection getAllGamesForATeam(Connection connection, String teamName)
throws SQLException
Collection col=new ArrayList(50);
String strSQL = "SELECT TeamIndex FROM Team WHERE TeamName='" + teamName + "'";
Statement statement = connection.createStatement();
ResultSet rs = statement.executeQuery(strSQL);
int teamIndex=-1;
if( rs.next() )
teamIndex=rs.getInt("TeamIndex");
strSQL = "SELECT GameIndex, Month, Day, Year, HomeTeamIndex, VisitorTeamIndex, HomeTeamScoredFirst, LeagueGame, NeutralSiteGame, PlayoffGame, HomeTeamGoals, VisitorTeamGoals FROM Game";
strSQL+=" WHERE (HomeTeamIndex=" + teamIndex + ") OR";
strSQL+=" (VisitorTeamIndex=" + teamIndex + ")";
strSQL+=" ORDER BY Year, Month, Day";
statement = connection.createStatement();
rs = statement.executeQuery(strSQL);
while(rs.next())
GameBean currentGame=new GameBean(rs);
currentGame.putInTeamNames(connection);
col.add(currentGame);
return col;
// The unit test method public static void main(String[] args)
// has been moved to ..\TestPrograms\TestItemBean.java so that this
// class can be used in the package MyBeans.
/////////////////////////////////// END OF FILE //////////////////////////////

Where do you close the ResultSet?
Where do you close the Statement?
Presumably you only create one connection for all users or you close it somewhere.

Weblogic server using jdbc-odbc bridge

I want to connect to database through jdbc-odbc bridge.I am using web logic server. When i creating new jdbc connection pool a error comes that driver class is not on classpath. how i rectify this problem? how I make weblogic to recognize sun.jdbc.odbc.JdbcOdbcDriver?

like any other library...
put the .jar file of the lib in the WEB-INF/lib of
your webappWrong in so many ways.
You don't add drivers to WEB-INF/lib if they're being acquired as datasources - the server needs access to the driver to create the data source. If you're not using a DataSource but materializing the connection directly, then this advice is semi-correct, but it's a crappy way to build a web app.
You don't normally add a JAR for the Sun JDBC ODBC bridge anyway as it's present by default in their J2SE implementation.
And finally, I think WebLogic doesn't use the Sun J2SE implementation anyway, so it's possible that the bridge is not available at all.
So the correct answer is: Don't use the bridge driver. Acquire a driver for your specific database and use that. And make sure that it's available to the application server. If you absolutely must use the bridge driver, you're going to have to use the Sun J2SE implementation to run WebLogic - and I think you'll have to consult the WebLogic site for help with that.

JDBC-ODBC Bridge does not support Unicode UTF-16

Hi
I'm using Jdeveloper 10.0.3 IDE in order to develop an application for data transformation between MS Access 2003 (source) and Oracle 10g (destination). Clients use Windows XP.
JDBC-ODBC Bridge still does not support Unicode UTF-16 which is the Charest used by MS Access 2000/2003.
Note that when I changed locale in regional setting, destination Connection to Ora10g failed to open a connection, it works only with English locale, so I can't change my locale information.
How can I read Unicode from source DB?
Any help would be appreciated. I look forward to see your response.
Thanks,

i also heared that JDBC-ODBC Bridge still does not support Unicode UTF-16,
but i guess this is not in my case.That's the key in fact. JDBC-ODBC Bridge does not support UTF-16, which is the charset used by MS Access 2000/2003.
or do i need to use a third party driver for jdbc odbc bridge?Free library at http://jackcess.sourceforge.net/
Commerical JDBC driver at http://www.hxtt.com/access.html
Yonghong Zhao
System Analyst
www.hxtt.com

JDBC-ODBC BRIDGE gives classcast exception

I want to use your XMLSQL Utility to exchange data between XML
and database( Access database ) through sun's jdbc-odbc bridge,
but got the following run time error:
oracle.xml.sql.OracleXMLSQLException:
java.lang.ClassCastException:

While the SQL-to-XML functionality of XSU works with any JDBC driver, the 1.2.1 (current release) of XSU has the restriction that the insert/update/delete functionality only works with the Oracle JDBC driver.
We are testing the next version of XSU in house that fixes this limitation to allow it to support full functionality against any JDBC driver. We expect this release to be posted by next Friday (Oct 20th).

JDBC-ODBC Bridge is too slow

Why the Sun JDBC-ODBC Bridge is so slow? When i use the ms bridge it is as faster than a JDBC connection, but i found a bug on the ms bridge that it returns NULL when the value is a "" (blank)
Anyone how to make sun bridge has a acceptable perfomance?
I am using MySQL 3.23 and tested on Sun JDKs 1.1.8, 1.2, 1.4
My comp is a K6-2 400 with 128 RAM
Thanks

isjm said
   I've found using a pure JDBC driver (ashna's JTurbo) to be
   roughly 40% faster than the bridge after doing some
   (admitidly) small amount of bench testing. I also found
   it resolved a number of issues (bugs??) with the bridge
   (e.g. no longer throws an occasional fractional truncation
   exception when inserting timestamps). As for the bridge
   being used only for test purposes check out this URL:
   http://java.sun.com/J2se/1.3.0/docs/guide/jdbc/getstart/bridge.doc.html
   They recommend using the bridge only for experimental use or when a
   pure driver is not available. I guess you could consider this as test purposes only.There is no such thing as a 'pure driver' (or 'pure jdbc driver' from a different post.)
The doc you site suggests a 'pure java' driver - a type 4. I question that. I know there are number of things that one can do in ODBC and in OCI which speed up requests. And obviously one can't do those in java.
Performance problems are caused by the following:
-Requirements-most impact
-Design
-Environment (cpu,network,thread, etc bottlenecks)
-Language/intefaces - least impact.
Changing requirements/design can easily produce impacts of orders of magnitude (by removing one requirement I reduce a 4-8 hour report to less than 30 seconds.) So how much impact did the 40% you saw impact your total application? Did you profile your application/system under load using a automated tool to measure the speed?
I would suspect also that the suggestion that the driver is 'experimental use or when no other alternative is available' might be slightly biased as the driver was produced by Merant who is actively selling drivers too. One would suppose that they were not allowed to deliberately introduce bugs into the code. However, they might have insisted that some language be introduced to suggest that someone should buy the product.
anarquia said
   But i can't believe i've tested today again and the sun
   bridge is working as fast the ms bridge! i can't
   understand, yesterday i've tested a million times
   and it was about 30 times slower, i'll try to find
   what's happened yesterdayDid you use a closed network? Did you use isolated servers?

JDBC-ODBC Bridge Performance To MS Access

Similar Messages

Maybe you are looking for