Data Type Mapping and Compatibility
When migrating from MySQL to Oracle, ensure data types align between the two systems:
- Numeric Data Types: Map
INT
toNUMBER
,DECIMAL
toNUMBER
with precision/scale. - Character Data Types: Match
VARCHAR
toVARCHAR2
, adjusting lengths if needed. - Date and Time Data Types: Align
DATE
,TIME
,DATETIME
to Oracle’sDATE
, mindful of format differences. - Binary Data Types: Convert
BLOB
andTEXT
to Oracle’sBLOB
andCLOB
. - Boolean Data Type: Translate MySQL’s
BOOLEAN
to Oracle’sNUMBER(1)
with 0/1 values. - Custom and Enumerated Types: Manually convert MySQL custom types, considering Oracle support.
- Special Considerations: Address any MySQL features lacking direct Oracle equivalents.
How to Migrate from MySQL to Oracle
Migrating a database from MySQL to Oracle can be a complex yet rewarding endeavor, especially when transitioning between relational database management systems (RDBMS). This guide will explore the step-by-step process of migrating from MySQL to Oracle, covering key concepts, tools, and best practices to ensure a successful transition.