SELECT value ||
CASE
WHEN instr(dbms_utility.port_string, 'WIN_NT') > 0 then '\'
ELSE '/'
END || (
SELECT instance_name FROM v$instance) || '_ora_' || (
SELECT spid ||
CASE
WHEN traceid is not null then '_' || traceid
ELSE null
END
FROM v$process
WHERE addr = (
SELECT paddr FROM v$session
WHERE sid = (
SELECT sid FROM v$mystat WHERE rownum = 1))) || '.trc' as tracefile
FROM v$parameter
WHERE name = 'user_dump_dest' ;
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