Installing the new version of Informix
Install and configure the new version of Informix®.
If possible, migrate on a database server dedicated to testing your migration before you migrate on your production database server.
Decide whether to upgrade on the same computer, known as an in-place migration, or an a different computer, known as a non-in-place migration and follow the appropriate process.
Important: Monitor the database server
message log, online.log, for any error messages.
If you see an error message, solve the problem before you continue
the migration procedure.