gettrcname.sql:获得跟踪文件名称
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