Oracle Data Guard 11g Handbook

Introduction

Oracle Data Guard provides the best data protection and data availability solution for mission-critical databases that are the life-blood of businesses large and small. As bold as this statement is, Data Guard’s rich capabilities did not materialize overnight; Data Guard is a product of more than 15 years of continuous development. We can trace the roots of today’s Data Guard as far back as Oracle7 in the early 1990s. Media recovery was used to apply archived redo logs to a remote standby database, but none of the automation that exists today was present in the product. Instead, user-written scripts used FTP to transmit and register archive logs at the standby database. The Oracle7 feature was appropriately referred to as “manual ...