Data Recovery Advisor
Reducing down time by eliminating confusion:
Data Failures
Data Failure:Examples
- Not accessible components,for example:
- Missing data files at the OS level
- Incorrect access permissions
- Offline tablespace,and so on
- Physical corruptions,such as block checksum failures or invalid block header field values
- Logical corruptions,such as inconsistent dictionary,corrupt row piece,corrupt index entry,or corrupt transaction.
- Inconsistencies,such as control file is older or newer than the data files and online redo logs
- I/O failures,such as a limit on the number of open files exceeded,channels inaccessible,network or I/O error.
Data Recovery Advisor RMAN Command-Line Interface
| RMAN Command | Action |
| LIST FAILURE | Lists previously executed failure assessment |
| ADVISE FAILURE | Displays recommended repair option |
| REPAIR FAILURE | Repairs and closes failures(after ADVISE in the same RAMN session) |
| CHANGE FAILURE | Changes or closes one or more failures |