Database migration from Oracle to MySQL
Migrating from Oracle to MySQL server can bring numerous benefits such as low cost of ownership, open source database engine, tight integration with the web, a wide circle of MySQL database professionals, and much more. However, it is important to note that if someone is constructing a complex and large-scale corporate database, it may be reasonable to stay with Oracle since it provides ultimately rich collection of features and tools for this purpose.
One of the most significant differences between Oracle and MySQL is the cost of ownership. While Oracle can be quite expensive, MySQL is an open-source database engine that is available for free. This means that companies can save a significant amount of money by switching to MySQL. Additionally, MySQL offers tight integration with web technologies such as PHP, making it an attractive choice for web developers.
Another benefit of using MySQL is the large community of MySQL database professionals. Because MySQL is an open-source database engine, there is a wide circle of professionals who are familiar with the technology and can provide support when needed. This is not always the case with Oracle, which can be more difficult to find skilled professionals to provide support.
However, it is important to note that if someone is constructing a complex and large-scale corporate database, Oracle may still be the better option. This is because Oracle provides the ultimate range of features and tools for this purpose, making it the preferred choice for large enterprises that require a high degree of functionality and flexibility.
The process of converting an Oracle database to a MySQL database consists of several steps. First, the Oracle table definitions are exported into “CREATE TABLE” statements, which are then made compatible with MySQL format and loaded into the MySQL database. Next, the Oracle data is exported into CSV files, which are then modified according to the target format and imported into the MySQL database.
Oracle indexes and constraints are extracted in the form of CREATE statements. These statements are then converted according to MySQL syntax and imported into the target database. Additionally, because MySQL does not support sequences, Oracle sequences must be emulated in the destination database according to a specific guide.
Finally, Oracle views, triggers, stored procedures, and functions are exported into SQL statements and plain text source code. These statements and code are then transformed according to MySQL syntax and loaded into the target database.
Obviously, the steps below can take much time and efforts when doing manually. Also, there is high risk of errors leading to data loss or corruption due to human factor. To avoid such issues, it is reasonable to use special software tools that automate Oracle to MySQL database migration. Oracle to MySQL converter is one of such solutions offered by Intelligent Converters, the company focused on database migration and synchronization for more than 20 years.