Migrating and upgrading
You can upgrade to the 12.10 release of HCL Informix® or migrate from other database servers to Informix. Upgrading is an in-place migration method that uses your existing hardware and operating system software. Some changes to the Informix database server can affect upgrading from a previous release. The resources that are external to the information center are marked as such.
Upgrade tasks
To upgrade to Informix version 12.10:
- Read about important migration information, known and fixed customer-reported defects, and platform-specific actions that you must take to configure and use HCL Informix products: Release, documentation, and machine notes for HCL Informix
- Understand your migration path and plan your migration: Overview of Informix migration
- Prepare for migration, including reviewing changes to Informix products since the release from which you are migrating: Preparing for migration
- Do the migration tasks that are appropriate to your system: Migrating to the new version of Informix
- Finish the migration process: Completing required post-migration tasks
If you for any reason you must revert to your previous version of Informix, see Reverting from Informix Version 12.10.
External resources
- Knowledge Collection: Informix Upgrade
and Migration (Support document)
This document helps you find the information that is related to upgrading and migrating to current Informix database products, including migrating from other database servers. - Oracle to HCL Informix porting
guide (IBM® developerWorks®)
This article describes the differences between Oracle and Informix functionality and syntax. In addition to DDL, DML and overall SQL syntax, you explore the differences between Oracle and Informix for large objects, user-defined types, user-defined routines, and table partitioning. - Migrating 32-bit Informix ODBC
applications to 64-bit (IBM developerWorks)
Learn how to migrate your current 32-bit or 64-bit Informix ODBC applications to the 64-bit driver in HCL Informix Client Software Development Kit 4.10 that is completely compatible with the 64-bit ODBC specification.