Based on the size of the database and the characteristics of the business system, a migration plan is formulated. The data migration is completed through mature data migration tools or scripts, and the business impact during the migration process is controlled. 

Analyze the table structure, indexes, views, and other objects in the Oracle database, and perform structure conversion and adaptation according to the characteristics of the MySQL database to ensure that the target database structure meets the business operation requirements. 

In response to the differences in SQL syntax and functions between Oracle and MySQL, we made compatibility adjustments and optimizations to the relevant SQL statements in the business system to ensure the normal operation of the application system. 

Through data consistency verification, business validation and performance testing, ensure that the migrated database system operates stably and complete the database switching of the business system.