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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.
Reverting from Informix® Version 14.10After preparing to revert, run the reversion utility and prepare to use the original database server.
Register DataBlade® modulesYou must register any DataBlade® modules that your databases require. Built-in database extensions automatically revert to the version included in the database server to which you reverted.

Register DataBlade modules

You must register any DataBlade® modules that your databases require. Built-in database extensions automatically revert to the version included in the database server to which you reverted.

If you are reverting to version 11.70.xC1 or later, you do not need to register built-in database extensions because they are registered automatically.

For information on registering DataBlade modules, see the Informix® DataBlade Module Installation and Registration Guide.

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