IBM Data Platform Ideas Portal for Customers


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Status Submitted
Workspace Data Replication: Change Data Capture
Created by Guest
Created on Aug 27, 2026

RELATED IDEAS

Support Native MySQL ENUM and other Data Type in IBM CDC for MySQL

Description

We request IBM to enhance IBM InfoSphere Data Replication (CDC) for MySQL to support the native MySQL ENUM data type.

ENUM is a valid and commonly used native MySQL data type. However, IBM CDC for MySQL currently does not support this datatype, which can result in CDC replication failures when ENUM columns are present or introduced through DDL changes.

This limitation creates a significant challenge in enterprise production environments. Customers may have existing MySQL databases and production tables that have been using MEDIUMINT for many years and are consumed by multiple applications. Modifying these production table structures solely to accommodate a CDC datatype limitation can introduce additional risks, including application impact, integration issues, data conversion concerns, and extensive regression testing.

Our environment has approximately 150 MySQL databases, and MEDIUMINT is already used across multiple existing production tables. We have already experienced production CDC replication failures related to this unsupported datatype.

We therefore request IBM to consider MEDIUMINT support as a product compatibility requirement for CDC for MySQL, rather than requiring customers to modify their existing database structures.

Business / Production Impact

  • CDC replication can fail when unsupported native MySQL datatypes are encountered.

  • Production replication delays and backlogs can occur.

  • Customers may be forced to modify long-standing database structures.

  • Database changes can impact multiple dependent applications and integrations.

  • Additional regression testing and production implementation activities are required.

  • The limitation creates operational risk for enterprise CDC deployments.

Requested Enhancement

We request IBM to:

  1. Add native MySQL ENUM/MEDIUMINT datatype support in CDC for MySQL.

  2. Ensure proper source-to-target datatype mapping and replication.

  3. Support MEDIUMINT/ENUM when encountered in existing tables as well as during applicable DDL changes.

  4. Provide the enhancement in a future CDC release or fix pack, if possible.

Additional Request

We would also appreciate IBM reviewing whether broader support for native MySQL datatypes can be provided in future CDC releases so that customers do not need to modify valid production database structures solely because of CDC datatype limitations.

This enhancement would significantly improve CDC compatibility, production resiliency, and adoption for enterprise MySQL environments.

Needed By Week

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