在MOUNT下
SELECT a.VALUE||b.symbol||c.instance_name||'_ora_'||d.spid||'.trc'TRACE_FILE_NAME
FROM (SELECT VALUE FROM v$parameter WHERE NAME='user_dump_dest') a,
(SELECT SUBSTR(VALUE,-6,1) symbol FROM v$parameter WHERE NAME='user_dump_dest') b,
(SELECT instance_name FROM v$instance) c,
(SELECT spid FROM v$session s,v$process p,v$mystat m
WHERE s.paddr=p.addr AND s.SID=m.SID AND m.statistic#=0)d
/
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