Sayan,
I have checked SQL Monitor both for new executions of the query and within
an ongoing execution.
The trace is a good ideal. Don't think I'll get to it today, but I'll post
once I have some output.
Thanks again.
Henry
On Fri, May 7, 2021 at 3:51 PM Sayan Malakshinov <xt.and.r@xxxxxxxxx> wrote:
Hi Henry,
Are you restarting that query? Or do you have just one still running
execution?
Also please try to trace sqlmonitor:
http://tech.e2sn.com/oracle/troubleshooting/oradebug-doc
Trace in-memory the SQL_MONITOR component (the target) and all its
sub-components at level high. Get high resolution time for each
trace:
alter session set events 'trace[sql_mon.*] memory=high,
get_time=highres';
On Fri, May 7, 2021 at 10:44 PM Henry Poras <henry.poras@xxxxxxxxx> wrote:
Nothing in gv$sql_plan_monitor for my sql_id.
Henry
On Fri, May 7, 2021 at 3:38 PM Henry Poras <henry.poras@xxxxxxxxx> wrote:
I have looked in ash and it helps, but sql monitor would be better.
Also, this got me wondering what is going on with the Monitor. I have
checked v$sql_monitor and nothing shows up with my sql_id. I have not
looked in v$sql_plan_monitor. I'll give it a shot, but will be surprised if
it is the outlier.
Henry
On Fri, May 7, 2021 at 2:12 PM Sayan Malakshinov <xt.and.r@xxxxxxxxx>
wrote:
Hi,
Have you checked v$sql_monitor? V$sql_plan_monitor?
Best regards,
Sayan Malakshinov
Oracle performance tuning expert
Oracle Database Developer Choice Award winner
Oracle ACE Associate
http://orasql.org
On Fri, May 7, 2021, 21:06 Lothar Flatz <l.flatz@xxxxxxxxxx> wrote:
I have seen queries that just won't show up in sql monitor. I do not
know why.
One idea is to increase the shared_pool.
Alternatively you might query ash, which helps to some extend.
At least you can group by sql_plan_line_id to find out where the time
is spent.
I guess you have a parallel query. You can still use runtime stats as
shown here: https://jonathanlewis.wordpress.com/2016/05/11/dbms_xplan/
Good luck
Lothar
Am 07.05.2021 um 19:50 schrieb Henry Poras:
Thanks Lothar and Mohamed. I've checked for both of those
possibilities. The query is not still parsing. I see, for example,
multiple
entries on multiple lines of the execution plan in
v$active_session_history
(and in_sql_execution is 'Y'). I've also been looking in gv$sql_monitor
for
this sql_id and running dbms_sqltune.report_sql_monitor while the query is
still running (at ~5-10 minutes, 30 minutes, ...) with no luck.
Henry
On Fri, May 7, 2021 at 1:19 PM Lothar Flatz <l.flatz@xxxxxxxxxx>
wrote:
Hi,
If a query is running a long time, details might age out.
I have a long running query at one of my customers and I can see all
details EM type report about 30 minutes.
A monitor in Text format is visible a lot longer.
You might create a Text format Monitor manually:
set longchunk 50000
set long 50000
set lines 200 pages 0
set trimspool on
select DBMS_SQLTUNE.REPORT_SQL_MONITOR(sql_id=>'9mmcywzzj5myn',
report_level=>'ALL',Type=>'TEXT') as report
from dual;
Always keep in mind though, that in many cases it is not necessary to
let a query finish to see its issue.
30 Minutes will often be enough .
Regards
Lothar
Am 07.05.2021 um 18:50 schrieb Henry Poras:
I think I'm missing something silly here, but I don't know what.running
I'm having an issue with getting a sql_monitor report and I'm
(well, ran) out of ideas on what to try next. I have a long runningalways
query (~2 hours on 12.1.0.2) for which I am trying to get a report
using dbms_sqltune.report_sql_monitor. The result returned is
empty. So I tried:lines
- setting _sqlmon_max_planlines to 1000 (execution plan is ~600
using display_cursor('adaptive'))SET
- checked statistics_level which is correct. It is TYPICAL
- control_management_pack_access is DIAGNOSTIC+TUNING (also correct)
I thought it might be aging out of memory since it ran long, but
running the report and looking in gv$sql_monitor after 2, and 10-15
minutes still showed nothing. Adding a MONITOR hint to the CTE and
body of the sql didn't help. Neither did running an ALTER SYSTEM
EVENTS 'sql_monitor [sql:...] force=true'.
I can't figure out why I am getting nothing. Anybody have any ideas?
Thanks.
Henry
--
Best regards,
Sayan Malakshinov
Oracle performance tuning engineer
Oracle ACE Associate
http://orasql.org
