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Migrating and upgradingYou can upgrade to the 14.10 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.
Migrating Informix® database systemsThe Informix® Migration Guide describes how to move data manually between databases, servers, and computers.
Migration to and reversion from 14.10
Reverting from Informix® Version 14.10You can revert to the version of the database server from which you migrated. When you run the reversion utility, you specify the target server for reversion and then Informix® checks your database. If necessary, Informix® might tell you to drop new objects, before automatically converting your data into the target server.
Preparing to revertIf you used Version 14.10, you must prepare your system for reversion to the pre-migration version of the database server.
Back up Informix® Version 14.10Before you begin the reversion, make a complete level-0 backup of Informix® Version 14.10.

Back up Informix Version 14.10

Before you begin the reversion, make a complete level-0 backup of Informix® Version 14.10.

For more information, see the Informix Backup and Restore Guide.

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