I was thinking we could use copy-db utility. Can anybody tell me if that
is a possibility and if there are any known issues.
Thanks
-----Original Message-----
From: Siomara Pantarotto [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, September 19, 2001 12:27 PM
To: Kishore Balasubramanya; [EMAIL PROTECTED]
Subject: Re: Getting data from Oracle to Mysql
Since I know Oracle, MySQL, and Java the fastest way I did it was:
1) I created scripts for creating the tables in both DBs (this is the
way I
usually do). They differ a bit on datatypes, and I had to remove all the
foreign key when dealing with MYSQL. I have 2 scripts called
makeOraDB.sql
and makeMySQLDB.sql that will call others scripts and generate the dbs
in
both environments any time I run them. If I need to update or fix the
schemas all I need to do is run the scripts again.
2) I created a class in java to deal with the migration and persistence.
This class creates 2 connections one with Oracle and another with MySQL.
I
read the rows in Oracle into a resultset and then I navigate this result
set
and for every row I do an insert in the MySQL DB.
Notice that this is a one shot process. The MySQL tables are completely
empty in the beginning of this process.
Notice also that the scripts for generating the DB are used in a
development
environment. In production it would make no sense dropping and
generating
the DBs again and again. I am in a development process.
If you are in a production environment, with your Oracle DB completely
populated with data, you can just work on the MYSQL scripts and the java
migration class.
In summary: I did everything from scratch, completeluy manually. No
tools
involved.
If someone know a better way please let me know.
Siomara
>From: "Kishore Balasubramanya" <[EMAIL PROTECTED]>
>To: <[EMAIL PROTECTED]>
>Subject: Getting data from Oracle to Mysql
>Date: Wed, 19 Sep 2001 11:50:27 -0400
>
>Hi,
>
>Can anybody tell me how to get all the data and the table structures
>from Oracle to Mysql.
>
>Thanks,
>
>Kishore
>
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