问题
I need to see all queries coming to database. How to do that? I could not get proper results from a Google search.
回答1:
Enable SQL Trace & all the queries coming to the database will be logged.
ALTER SESSION SET sql_trace = true;
ALTER SESSION SET tracefile_identifier = mysqltrace;
The trace file will be present in the udump directory.
If you want to audit the database, look at my previous answer.
回答2:
If you need to see all queries from all sessions for a SHORT window of time and you need a really simple solution, this is what I do. (The above answers will only show you SQL being run in one session, this gives all SQL across all sessions, easily.)
1). Create a temp table to store all the retrieved SQL:
-- Fabien pointed out out that 'port may be inaccessible on 10.2
CREATE TABLE "MIKE"."TMP"
( "LOOP_NO" NUMBER(10,0),
"SID" NUMBER,
"SERIAL#" NUMBER,
"PROCESS" VARCHAR2(24 BYTE),
"PROGRAM" VARCHAR2(48 BYTE),
"MODULE" VARCHAR2(64 BYTE),
"OSUSER" VARCHAR2(30 BYTE),
"SCHEMANAME" VARCHAR2(30 BYTE),
"ACTION" VARCHAR2(64 BYTE),
"MACHINE" VARCHAR2(64 BYTE),
"PORT" NUMBER,
"TERMINAL" VARCHAR2(30 BYTE),
"ADDRESS" RAW(8),
"PIECE" NUMBER,
"SQL_TEXT" VARCHAR2(4000)
)
2). Run a nasty polling loop in an anonymous block to gather all SQL run on the system, as long as the block is running:
declare
begin
for j in 1.. 1000 loop
insert into mike.tmp
SELECT j, b.sid, b.serial#, b.process, b.program, b.module, b.osuser, b.schemaname, b.action, b.machine, b.port, b.terminal,a.address, a.piece, a.sql_text
FROM V$sqltext_With_Newlines a
join V$Session b on a.address = b.sql_address
WHERE A.ADDRESS NOT IN (select address FROM mike.tmp)
ORDER BY b.sid, a.piece;
commit;
end loop;
end;
3). Query to retrieve SQL:
select distinct osuser, a.address, a.sid, a.piece, a.sql_text
from mike.tmp a
join (select loop_no, sid from mike.tmp where sql_text like '%anytexthere%') b
on a.loop_no = b.loop_no
and a.sid = b.sid
order by a.sid, a.address, a.piece
... please mind that this is just a quick way to trap SQL when you are in a "what the heck is going on here?" situation, and you DO NOT have GUI Tools, and you DO NOT have file access to USER_DUMP_DEST.
回答3:
Running XE in Windows here is how I do it to find what user is doing. Start up SQLPlus and run:
> SELECT USERNAME, SID, SERIAL# FROM v$session WHERE userName = '<your user>'
This gets you two integer values, SID and SERIAL# for your user. Your user may have more than one session open. Run this to turn on logging:
> execute dbms_system.set_sql_trace_in_session(<SID>, <SERIAL#>, true)
Next have your app do some work... Find out where the data went using:
> SHOW PARAMETERS user_dump_dest
And you'll get something like: C:\oraclexe\app\oracle\diag\rdbms\xe\xe\trace where you will find a number of trace logs. The .trc files are simply text
When done, turn off the logging so you don't fill up files or slow your db down.
> execute dbms_system.set_sql_trace_in_session(<SID>, <SERIAL#>, false)
There you go - happy diagnosing and reverse engineering!
来源：https://stackoverflow.com/questions/9125223/show-all-queries-coming-to-an-oracle-database