one procedure is executing since long and waiting on sql*net message from db link

 Below is the session and the user is saying he has executed a procedutre and it's running since long.First the sqltext from the sql id is giving a select statement .How do I know that this session is a prcoedure execution because I think it would give only the sql statements executing inside the procedure

select prev_sql_id,blocking_session,last_call_et,username,osuser,event,sql_id from v$session where status='ACTIVE' and username<>'SYS';

9nh6hyj3xzy7f                                                   87293 PES                                                                                        oracle                                                                                     SQL*Net message from dblink                                                                                                                                                                      a6v3hbfn607w7

Next is what can I do to remove the SQL*NET message from db link wait.The last_call_et is 87239 and when I see the database links used in the query -I logged in to those databases but didn't find any long running session from the users to which these databasel inks connect.