Premigration Steps

Platform migration projects need proper planning in order to accurately estimate the resources, cost, and complexity of the migration, as well as the timelines for the effort. This exercise will set expectations and determine the perception of success on the project. Premigration steps also play a key role in choosing the right migration strategy, architecting the migration steps, determining the tools needed to perform the migration, and most importantly, estimating how much automation can be incorporated into the migration process.

The typical premigration steps are

Discovering the current environment

Database Machine capacity planning and sizing

Choosing a migration strategy

NOTE

Most of the premigration steps discussed in this section are focused on migrating non-Oracle databases, since they are the most complex of migrations. Considerations specific to Oracle sources will be pointed out as relevant.