Thursday, October 3, 2013

Simple Way to Get SQL ID of Large and Similar Queries in Oracle

I frequently get clients' request to tune number of queries related to some application or reports. One of the first things to start the tuning process is to get the SQL_ID of the queries. On a busy system, it can be quite a hassle to find out SQL_ID of a specific query.


The most simple way to get SQL_ID of query is to add comment in the query text and then get the SQL_ID from v$SQL view on the basis of that comment. Here is a working example:

select /* MYCOMMENT */ name,age,salary
from user.mytable
where age > 78 order by name;

COL SQL_TEXT format a45

select /* MYCOMMENT1 */ sql_id, substr(sql_text,1,200) sql_text
from v$sql
where upper(sql_text) like '%MYCOMMENT%'
and sql_text not like '%/* MYCOMMENT1 */%' ;

Enjoy query fishing :)

2 comments:

marogel said...

Fahd,

you may want to check
http://carlos-sierra.net/2013/09/12/function-to-compute-sql_id-out-of-sql_text/

Cheers
Matthias

john bill said...

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