oradebug setospid 35020
oradebug setospid is found in v$process, column SPID (or SOSID?). If a session ID (SID) is known, this value can be found like so: select
prc.spid
from
v$session ses join
v$process prc on ses.paddr = prc.addr
where
ses.sid = sys_context('userenv', 'sid');