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Sun JDBC-ODBC driver to Microsoft Access DB slow in certain circumstances

Posted on 2004-04-16
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1,042 Views
Last Modified: 2007-12-19
Hi,

My Java 1.3 application connects to a local Microsoft Access DB (200MB+) using Sun's JDBC-ODBC driver. When running queries, it's performance is acceptable (a few seconds) when the application is running on Microsoft 98 or 2000, and completely unacceptable on Microsoft XP Pro or Home (a few minutes). I changed to another driver and it's performance is now the same for 98, 2000 and XP (a few seconds).

My question:
1. Why the discrepancy? Why would the driver work well on some operating systems and not on another? It's exactly the same JRE, same application, same data. Is there anything (for example, a patch) environmental that I can change on the XP machines that will fix the problem?

2. If there's nothing that can be done to enhance the Sun driver's performance on XP, are there any good free drivers? The application is installed all over the country, and so replacing the driver will not make business sense.

Thanks!

Pam.
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Question by:icekalt
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11 Comments
 
LVL 9

Expert Comment

by:mmuruganandam
ID: 10840470
The ODBC itself is too slow just because of the reason that it is not multi-threaded.  So when there is many calls at a time, each call will be processed one by one.

I don't think you have drivers for that.  Still search out you may find one.
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LVL 35

Expert Comment

by:TimYates
ID: 10840695
I'm not sure if the JTDS driver works with Access or not...

It works with SQL Server...and MAYBE Access...

http://jtds.sourceforge.net/
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Expert Comment

by:TimYates
ID: 10840697
Hmmm...reading the FAQ, it doesn't look like it does....sorry...
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Expert Comment

by:mmuruganandam
ID: 10840709
It supports only for

JDBC 2.1 driver for the Microsoft SQL Server series (6.5, 7.x and 2000) and Sybase 10.
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LVL 30

Expert Comment

by:Mayank S
ID: 10840843
You might try to use Connection pooling, if that's possible. I'm not sure if there is a driver for Access that allows pooling, but you can spend some time reading: http://webdevelopersjournal.com/columns/connection_pool.html
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LVL 86

Expert Comment

by:CEHJ
ID: 10842136
Proabably easier to get a proper, free database
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Expert Comment

by:Mayank S
ID: 10842154
Pay attention to the important word: >> *proper*

;-)
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Accepted Solution

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TimYates earned 250 total points
ID: 10843018
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LVL 86

Expert Comment

by:CEHJ
ID: 10843068
Not forgetting HSQL, depending on the scale of the application being quite small

http://hsqldb.sourceforge.net/
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Expert Comment

by:Tommy Braas
ID: 10843761
I would recommend in the short term to basically create the connections you need, and keep them alive. Creating new connections to a database is quite expensive (read takes time). In one of my applications I use a connection object that I keep around for each DAO, although that approach doesn't scale well to many DAOs, it works for my case with 8 DAOs. It might work in your case as well.
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