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This book describes the Siebel upgrade process from Siebel 6 to Siebel 7.7 in detail and in a step-by-step approach along with screen shot of very step.
It describes pre-upgrade tasks , upgrade tasks and post-upgrade tasks in detail.
It also tells the user some useful tips and lessons learned from numerous upgrades.
It has also has a comprehensive list of issues & resolutions when upgrading from Siebel 7.7 to Siebel 8.1.