快活林资源网 Design By www.csstdc.com
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$sqltext c where a.username is not null and a.lockwait = b.kaddr and c.hash_value =a.sql_hash_value;
3./* 查看oracle隐藏参数 */
select name, value, decode(isdefault, 'TRUE', 'Y', 'N') as "Default", decode(ISEM, 'TRUE', 'Y', 'N') as SesMod, decode(ISYM, 'IMMEDIATE', 'I', 'DEFERRED', 'D', 'FALSE', 'N') as SysMod, decode(IMOD, 'MODIFIED', 'U', 'SYS_MODIFIED', 'S', 'N') as Modified, decode(IADJ, 'TRUE', 'Y', 'N') as Adjusted, description from ( --GV$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;
以上就是本文给大家分享几个比较好用sql语句,希望大家喜欢。
快活林资源网 Design By www.csstdc.com
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快活林资源网 Design By www.csstdc.com
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