| ERROR | recover datafile operand string cannot be used to recover block | 
| CAUSE | The specified operand could not be used with RECOVER block command. | 
| ACTION | Delete the invalid operand and retry the command. | 
| ERROR | recover datafile operand string cannot be used to recover block | 
| CAUSE | The specified operand could not be used with RECOVER block command. | 
| ACTION | Delete the invalid operand and retry the command. |