Is it possible to add an index to the 'valid_value' field in the 'serv_req_si_value' table without a

We are currently working with the serv_req_si_value table in our Oracle database. To optimize our queries, we have identified the need to add an index on the valid_value field. Before proceeding, we'd like to seek your expertise on this matter.

Is it possible to create an index on the valid_value field in the serv_req_si_value table without causing any adverse effects on the system? If so, are there any specific considerations or recommendations you would suggest for this operation?