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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.
Migration to OneDB 2.0.0.0
Preparing for migration to OneDB 2.0.0.0Before you install the new version of HCL OneDB™, you must prepare the database server environment for migration by performing specified pre-migration tasks. If you are also migrating from 32-bit to 64-Bit database servers, you must perform additional tasks.
Preparing for migrationPreparing for migration includes gathering information about and backing up your data, so that you can reinstall the previous version of the server and restore your data if you have a migration problem. Preparing for migration is crucial for successful migration.
Making a final backup of the source database serverUse ON-Bar or ontape to make a level-0 backup of the source database server, including all storage spaces and all used logs. After you make a level-0 backup, also perform a complete backup of the logical log, including the current logical-log file.

Making a final backup of the source database server

Use ON-Bar or ontape to make a level-0 backup of the source database server, including all storage spaces and all used logs. After you make a level-0 backup, also perform a complete backup of the logical log, including the current logical-log file.

Be sure to retain and properly label the tape volume that contains the backup.

Important: You must also make a final backup of each source database server instance that you plan to convert.

For ON-Bar, remove the ixbar file, if any, from the $INFORMIXDIR%/etc or %INFORMIXDIR%\etc directory after the final backup. Removing the ixbar file ensures that backups for the original source database server are not confused with backups about to be done for the new database server. Follow the instructions regarding expiration in your storage manager documentation.

For more information about making backups, see the HCL OneDB™ Backup and Restore Guide.

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