Oracle檢視執行過的SQL

reference:

oracle中可以通過v$session表檢視當前有效的session資訊，並且可以通過v$session的sql_id或sql_address通過關聯查詢v$sql檢視當前正在執行的sql語句；

如果想檢視session近期執行的sql語句,可以通過v$active_session_history表中的sql_id檢視近期歷史執行的sql語句,要求資料庫的liberary沒有被fresh。

select b.sql_text, --content of sql a.machine, --which machine run this code a.username, a.module, -- the method to run this sql c.sofar / totalwork * 100, --conplete percent c.elapsed_seconds, --run time c.time_remaining --remain to run time from v$session a, v$sqlarea b, v$session_longops c where a.sql_hash_value = b.hash_value(+) and a.sid = c.sid(+) and a.serial# = c.serial#(+)

--and a.sid=139

oracle 最近執行過的sql語句:

select sql_text, last_load_time from v$sql where last_load_time is not null

order by last_load_time desc

其它，

select sql_text,last_load_time from v$sql order by last_load_time desc;

select   sql_text, last_load_time from v$sql where last_load_time is not null and sql_text like 'select%' order by last_load_time desc;

select   sql_text, last_load_time from v$sql where last_load_time is not null and sql_text like 'update%' order by last_load_time desc;

select   sql_text, last_load_time from v$sql where last_load_time is not null and last_load_time like' 14-06-09%' order by last_load_time desc;

監控concurrent 正在執行的sql

select a.sid, a.serial#, b.sql_text
from v$session a, v$sqltext b
where a.sql_address = b.address
--and a.sid = <...>
order by b.piece

正在執行的

select a.username, a.sid,b.sql_text, b.sql_fulltext from v$session a, v$sqlarea b

where a.sql_address = b.address

執行過的

select b.sql_text,b.first_load_time,b.sql_fulltext from v$sqlarea b where b.first_load_time between '2009-10-15/09:24:47' and

'2009-10-15/09:24:47' order by b.first_load_time

（此方法好處可以檢視某一時間段執行過的sql，並且 sql_fulltext 包含了完整的 sql 語句）

其他

select osuser,program,username,schemaname,b.cpu_time,status,b.sql_text

from v$session a left join v$sql b on a.sql_address=b.address and a.sql_hash_value=b.hash_value order by b.cpu_time desc

select address, sql_text, piece 
from v$session, v$sqltext 
where address = sql_address 
-- and machine = < you machine name > 
order by address, piece

查詢前十條效能差的sql

select * from (select parsing_user_id,executions,sorts, 
command_type,disk_reads,sql_text from v$sqlarea 
order by disk_reads desc )where rownum<10 ;

檢視佔io較大的正在執行的session

select se.sid,se.serial#,pr.spid,se.username,se.status, se.terminal,se.program,se.module,se.sql_address,st.event,st. p1text,si.physical_reads, si.block_changes from v$session se,v$session_wait st, v$sess_io si,v$process pr where st.sid=se.sid and st. sid=si.sid and se.paddr=pr.addr and se.sid>6 and st.

wait_time=0 and st.event not like '%sql%' order by physical_reads desc

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