Code: ORA-29861
Description:
 domain index is marked LOADING/FAILED/UNUSABLE
Cause:
 An attempt has been made to access a domain index that is being built or is
marked failed by an unsuccessful DDL or is marked unusable by a DDL operation.
Action:
 An attempt has been made to access a domain index that is being built or is
marked failed by an unsuccessful DDL or is marked unusable by a DDL operation.