挺好用的sql语句
1. /* 得到trace文件路径和名称 */SELECT d.VALUE
|| '/'
|| LOWER (RTRIM (i.INSTANCE, CHR (0)))
|| '_ora_'
|| p.spid
|| '.trc' trace_file_name
FROM (SELECT p.spid
FROM v$mystat m, v$session s, v$process p
WHERE m.statistic# = 1 AND s.SID = m.SID AND p.addr = s.paddr) p,
(SELECT t.INSTANCE
FROM v$thread t, v$parameter v
WHERE v.NAME = 'thread'
AND (v.VALUE = 0 OR t.thread# = TO_NUMBER (v.VALUE))) i,
(SELECT VALUE
FROM v$parameter
WHERE NAME = 'user_dump_dest') d
/
2./* 显示产生锁定的sql语句 */select/*+NO_MERGE(a)NO_MERGE(b)NO_MERGE(c)*/a.username,a.machine,a.sid,a.serial#, a.last_call_et "Seconds", b.id1, c.sql_text "SQL" from v$session a, v$lock b,v$sqltext c where a.username is not null and a.lockwait = b.kaddr and c.hash_value =a.sql_hash_value;3./* 查看oracle隐藏参数 */select name, value, decode(isdefault, 'TRUE', 'Y', 'N') as "Default", decode(ISEM, 'TRUE', 'Y', 'N') as SesMod, decode(ISYM, 'IMMEDIATE', 'I', 'DEFERRED', 'D', 'FALSE', 'N') as SysMod, decode(IMOD, 'MODIFIED', 'U', 'SYS_MODIFIED', 'S', 'N') as Modified, decode(IADJ, 'TRUE', 'Y', 'N') as Adjusted, descriptionfrom ( --GV$SYSTEM_PARAMETER select x.inst_id as instance, x.indx + 1, ksppinm as name, ksppity, ksppstvl as value, ksppstdf as isdefault, decode(bitand(ksppiflg / 256, 1), 1, 'TRUE', 'FALSE') as ISEM, decode(bitand(ksppiflg / 65536, 3), 1, 'IMMEDIATE', 2, 'DEFERRED', 'FALSE') as ISYM, decode(bitand(ksppstvf, 7), 1, 'MODIFIED', 'FALSE') as IMOD, decode(bitand(ksppstvf, 2), 2, 'TRUE', 'FALSE') as IADJ, ksppdesc as description from x$ksppi x, x$ksppsv y where x.indx = y.indx and substr(ksppinm, 1, 1) = '_' and x.inst_id = USERENV('Instance')) order by name;4./* 根据系统中oracle的pid来查看sql */select /*+ ORDERED */ sql_text from v$sqltext a where (a.hash_value,a.address) IN (select decode (sql_hash_value,0,prev_hash_value,sql_hash_value),decode (sql_hash_value,0,prev_sql_addr,sql_address) from v$session b where b.paddr =( select addr from v$process c where c.spid = '&pid')) order by piece ASC;
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