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About Data Recovery Advisor

In thc context of Data Rccovery Advisor, a health chcck is a diagnostic procedurę run by thc Health Monitor to assess the statc of thc database or its componcnts. Health checks are invoked reactively when an error occurs. You can also invoke chccks manually.

A failure is a persistent data corruption detectcd by a health chcck. Failures are usually detectcd rcactively. A database operation involving corrupted data rcsults in an error, which automatically invokes a health chcck in thc database. The chcck searches the database for failures related to the error. If failures are diagnosed, then they are rccorded in the Automatic Diagnostic Repository (ADR).

You can use Data Recovery Advisor to generate repair advice and repair failures only after failures have bcen detectcd by the database and stored in ADR. Data Recovery Advisorcan report on and repair failures such as inaccessible files, physical and logical błock corruptions, and I/O failures. Every failure has a failure priority: CRITICAL, HIGH, or LOW. Every failure also has a failure status of OPEN or CLOSED.

You can also use Data Recovery Advisor to view repair options. A repair is an action that fixes one or morę failures. Examples of repairs include błock media recovery, data file media recovery, and Oracle Flashback Database. Typically, Data Recovery Advisor

presents both automated and manuał repair options. If appropriate, you can choose an automated repair option in order to perform a repair. In this casc. Data Rccovcry Advisor vcrifics thc repair success, and eloses the rclcvant rcpaired failures.