How to display a SQL execution progress along with execution plan in Oracle?
Problem:
You want to view where Oracle SQL is taking time within a SQL execution plan.
Solution
With Oracle 11g version, we can view SQL execution plan progress while the SQL is running. The “V$SQL_PLAN_MONITOR” view contains a row for each step of a SQL statement’s execution plan. Below SQL will help to view the execution plan along with the progress.
The “V$SQL_PLAN_MONITOR" provides you with information on the steps that are using the most resources. The statistics in "V$SQL_PLAN_MONITOR” are updated every second.
We can also generate a real time text, HTML, or even a XML report of query progress within an execution plan by using the REPORT_SQL_MONITOR function of the DBMS_SQLTUNE package.
Example
select
a.sid
,a.status
,to_char(a.sql_exec_start,'yymmdd hh24:mi') start_time
,a.plan_line_id
,a.plan_operation
,a.plan_options
,a.output_rows
,a.workarea_mem mem_bytes
,a.workarea_tempseg temp_bytes
from v$sql_plan_monitor a
,v$sql_monitor b
where a.status NOT LIKE '%DONE%'
and a.key = b.key
order by a.sid, a.sql_exec_start, a.plan_line_id;
To generate a HTML report.
Example
SET LINES 3000 PAGES 0 LONG 1000000 TRIMSPOOL ON
SPOOL report.html
select dbms_sqltune.report_sql_monitor(session_id=> 901,
event_detail => 'YES' ,report_level => 'ALL' ,type => 'HTML'
)
from dual;
SPOOL OFF;
Published on 05-Dec-2020 06:23:46
