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Migrating and upgradingYou can upgrade to the 2.0.0.0 version of HCL OneDB™ or migrate from other database servers to HCL OneDB™. Upgrading is an in-place migration method that uses your existing hardware and operating system software. Some changes to the HCL OneDB™ database server can affect upgrading from a previous release.
HCL OneDB™ Migration GuideThe HCL OneDB™ Migration Guide describes how to move data manually between databases, servers, and computers.
Overview of moving dataIf you are installing the new version of the database server on another computer or operating system (non-in-place migration), you can use one of several tools and utilities to move data from your current database server.

Overview of moving data

If you are installing the new version of the database server on another computer or operating system (non-in-place migration), you can use one of several tools and utilities to move data from your current database server.

For example, suppose you migrated to the current version of HCL OneDB™ and created a few new databases, but decide to revert to the previous version. Before you revert, you can use one of the data-migration tools to save the data you added. After reverting, you can reload the data.

Before you move data, consider these issues:

Changes in the configuration parameters and environment variables
Amount of memory and dbspace space that is required
Organization of the data
Whether you want to change the database schema to accommodate more information, to provide for growth, or to enhance performance

For information about how to move data between database servers on different operating systems, also see Migrating database servers to a new operating system.

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