Restoring the Indexes After a Database Restore 
Use
During a
restore of a
database instance, the indexes contained in the
log area are not restored for optimization reasons. Indexes that have not been restored are marked BAD and can be restored explicitly by following the procedure described here.
Prerequisites
The database instance is in the
ONLINE
operational state.
Procedure
Choose Instance ® Recovery ® Indexes.
You can choose the tables for which the indexes marked
BAD are to be displayed. To do so, enter appropriate search arguments under Owner, Table Name, and Index Name.|
Owner |
Owner |
|
Table Name |
Name of the table |
|
Index Name |
Name of the index |
Then choose Indexes ® Select. The system displays a list of the indexes that match your criteria.
Select the indexes you want to restore in the list. If you want to restore all of the indexes displayed, choose Indexes ® Mark All.
Choose Indexes ® Execute to perform the action.

It is advisable to restore the indexes during periods where the workload on the system is lower.