Thanks,
to you, Martin and Frank. Have a nice Weekend.
regards
Lothar
Am 16.12.2017 um 18:40 schrieb Vishal Gupta:
Here are the trace level (upto 12.2 version).
*_Trace Levels_*
1 = use dbms_output.put_line instead of writing into trace file
2 = enable dbms_stat trace only at session level
4 = trace table stats
8 = trace index stats
16 = trace column stats
32 = trace auto stats – logs to sys.stats_target$_log
64 = trace scaling
128 = dump backtrace on error
256 = dubious stats detection
512 = auto stats job
1024 = parallel execution tracing
2048 = print query before execution
4096 = partition prune tracing
8192 = trace stat differences
*-- 11.1 onwards*
16384 = trace extended column stats gathering
*-- 11.2.0.2 onwards*
32768 = trace approximate NDV (number distinct values) gathering
*-- 12.1 onwards*
65536 = Online trace
131072 = Automatic DOP trace
262144 = System statistics trace
*-- 12.2 onwards***
524288 = Advisor trace
Regards,
Vishal Gupta
*From:*oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] *On Behalf Of *Martin Berger
*Sent:* 15 December 2017 22:24
*To:* Franck Pachot
*Cc:* Lothar Flatz; oracle-l@xxxxxxxxxxxxx
*Subject:* Re: dbms_stats.gen_selmap
Lothar,
Did you try to trace the dbms_stats activities?
Jared Still has documented some trace levels here:
https://blog.pythian.com/options-for-tracing-oracle-dbms_stats/
hth
Martin
2017-12-15 15:14 GMT+01:00 Franck Pachot <franck@xxxxxxxxxx <mailto:franck@xxxxxxxxxx>>:
Hi Lothar,
It seems related to online statistics gathering, which makes sense during an insert append.
Regards,
Franck.
On Fri, Dec 15, 2017 at 1:40 PM Lothar Flatz <l.flatz@xxxxxxxxxx <mailto:l.flatz@xxxxxxxxxx>> wrote:
We could trace it back to an insert /*+ append */. I did a little
experiment. The call is actually related to dynamic statistics
generation.
Am 15.12.2017 um 09:41 schrieb Lothar Flatz:
> Hi,
>
> this is a long running procedure on one of our DB's. According to
> Morgans Library it is an undocumented subprogram. Does anybody know
> what it does and when it is called?
>
> Regards
>
> Lothar
>
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