
CHAPTER 4 Plan: Writing a Plan and Getting Ready to Migrate
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Write a Migration Plan
Produce a project plan which documents:
• Migration strategy—Which method is most appropriate for your site.
• Fallback—What to do in case the migration fails. The plan you evolve will
be site-specific, but some general issues are discussed in Chapter 7, “Test:
Ensuring Stability and Performance”.
• Application test suite—What validation and performance testing to
perform for acceptance. See Chapter 6, “Implement: Making Database
Administration Changes” for guidance.
• Bridging—Ways to minimize the impact to users during the migration.
Refer to the business requirements you gathered in Chapter 3, “Analyze:
Documenting Your Environment”.
• Environment—Additional resources and changes to the environment
needed based on the information you gathered in Chapter 3, “Analyze:
Documenting Your Environment”.
• Scheduling—How much time the migration will take based on the level of
complexity and business needs. Refer to the business requirements you
gathered in Chapter 3, “Analyze: Documenting Your Environment”.
Producing the following documentation may also be useful:
• A work breakdown that lists tasks chronologically and assigns them to
specific roles like the one in Appendix B, “Sample Migration Task Lists”.
• Specification for application changes. The details of needed application
changes are discussed in Chapter 5, “Implement: Making Required
Application Changes”.
Build the Adaptive Server Environment
After decided the best migration approach for your system, begin creating or
updating the environment for Adaptive Server 12.5. Go to the following
sections and chapters for information about preparing your environment:
• Update Hardware Resources
• Verify Operating System Version and EBF Level
• Review Adaptive Server Interoperability with Other Sybase Products
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