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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
Migrating to Informix® 14.10When you migrate to a new version of Informix®, you must complete required migration and post-migration tasks.
Migrating to the new version of Informix®After you prepare your databases for migration, you can migrate to the new version of Informix®.
Adding Communications Support ModulesFor communications with clients, you can optionally use a Communications Support Module (CSM) with the current version of Informix®. After you install the CSM components, create entries in the concsm.cfg file and in the options field of the sqlhosts file to configure the CSM.

Adding Communications Support Modules

For communications with clients, you can optionally use a Communications Support Module (CSM) with the current version of Informix®. After you install the CSM components, create entries in the concsm.cfg file and in the options field of the sqlhosts file to configure the CSM.

Existing client applications do not need to be recompiled or relinked if your database server does not use CSMs. If your database server uses a CSM, client applications must relink with new Informix libraries. The client applications must install and configure the CSM.

For information about how to set up the CSM, see the Informix Administrator's Guide.

Note: Support for Communication Support Module (CSM) is removed starting Informix Server 14.10.xC9 . You should use Transport Layer Security (TLS)/Secure Sockets Layer (SSL) instead.

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