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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.
Data migration utilities
The onunload and onload utilitiesThe onunload and onload utilities provide the fastest way to move data between computers that use the same database server on the same platform.
Logging modeThe onunload utility does not preserve the logging mode of a database. After you load the database with onload, you can make a database ANSI compliant or add logging.

Logging mode

The onunload utility does not preserve the logging mode of a database. After you load the database with onload, you can make a database ANSI compliant or add logging.

For information about logging modes, refer to the Informix® Guide to SQL: Syntax.

During the load, you can move simple large objects that are stored in a blobspace to another blobspace.

If you do not specify any source-parameter options, onload uses the device that is specified as TAPEDEV. The block size and tape size are the values that are specified as TAPEBLK and TAPESIZE, respectively. (For more information about TAPEDEV, TAPEBLK, and TAPESIZE, refer to your Informix Administrator's Guide.)

If you do not specify creation options, onload stores the database or table in the root dbspace.

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