Package Getting Hung While Compiling

get the locked objects:

SELECT s.sid,

      s.serial#,

       l.lock_type,

       l.mode_held,

       l.mode_requested,

       l.lock_id1

    FROM   dba_lock_internal l,

       v$session s

    WHERE s.sid = l.session_id

    AND UPPER(l.lock_id1) LIKE '%PKG_NAME%'

    AND l.lock_type = 'Body Definition Lock';

Kill the sessions:

ALTER SYSTEM KILL SESSION 'sid,serial#' ;