Reviewing changes in Informix product functionality
Changes to Informix® product functionality might affect your plans for migrating to the latest version of the product.
Changes in functionality in Informix 12.10 can potentially impact your applications, scripts, maintenance processes, and other aspects that are related to your database server environment.
Changes to functionality that was introduced before Informix 12.10 can also affect your plans.
Review the changes that are described in New and changed features in Informix servers, evaluate the impact to your environment, and plan how to address the changes before migration.