Database Administrators Stack Exchange is a question and answer site for database professionals who wish to improve their database skills and learn from others in the community. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Currently our application is running using Oracle 11g database. We are developing newer version of the application which runs on MySQL cluster. We need to migrate the data from Oracle database to MySQL database. This is not a direct copy of database objects. In newer version of the application schema(table structure and relationships) is changed. And audit tables also needs to be copied. Is there any way to map tables, columns from old Oracle schema and new MySQL schema and apply copy so that the data will be copied?

We are thinking doing this activity in two steps. 1. Convert Oracle database to MySQL database. 2. Writing stored procedure to copy table by table.

Is there any best practices while performing this kind of database migration from one RDBMS vendor to another? Is there any open source or commercial tools available for this?

share|improve this question

closed as too broad by Paul White Sep 30 '15 at 2:23

There are either too many possible answers, or good answers would be too long for this format. Please add details to narrow the answer set or to isolate an issue that can be answered in a few paragraphs.If this question can be reworded to fit the rules in the help center, please edit the question.

I recommend to do this migration in two steps.

  1. Use MySQL Workbench to migrate most of the db objects and data to MySQL (table data will be copied by this process too). See Using the MySQL Workbench Migration Wizard for details. This will leave you with manual work for specific objects like stored procedures. No tool can do an automatic migration as stored routines differ vastly between Oracle and MySQL.
  2. Use MySQL Workbench to reverse engineer the migrated db into a model.
  3. Use this model to adjust objects to your new schema structure.
  4. Synchronize the model to your server to apply the changes. Depending on what changes you made this might be non-destructive, but of course, having a backup is always a good idea.

You can repeat steps 3 and 4 as many times as you wish to incrementally adjust your schema. Synchronization will also take over any changes made in schema by others (two way sync).

Migration from Oracle to MySQL is not supported by MySQL Workbench. All my suggestions above are just that, ideas one can try out to get it at least partially working. Nothing of that is being tested, however, because, as I said, Oracle to MySQL migration is not supported.

share|improve this answer

I recently converted an Oracle DB into MySQL using a program called DBConvert There is a free version that inserts watermarks into large tables, but that can be fixed. ;) It's not perfect and might take some tinkering to fix up after the conversion.

share|improve this answer

protected by Community Sep 30 '15 at 2:28

Thank you for your interest in this question. Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count).

Would you like to answer one of these unanswered questions instead?

Not the answer you're looking for? Browse other questions tagged or ask your own question.