The force=true for sql_monitor event is about enabling *immediate*
monitoring for SQL statements that would otherwise get monitored after 5
seconds of (CPU+I/O wait) time. It would be similar to using a SQL patch to
inject the MONITOR hint for that SQL_ID (although it uses a different
mechanism).
It does not lift the _sqlmon_max_planlines restriction, so you'd need to
increase that for your large plans.
Note that the sql_monitor force=true seems to be buggy in later versions -
it works in 12c, but doesn't seem to do anything in 18c & 19c.
--
Tanel Poder
https://tanelpoder.com
On Mon, May 18, 2020 at 2:59 PM Henry Poras <henry.poras@xxxxxxxxx> wrote:
Has anyone gotten "alter systems set events 'sql_monitor [sql:xxxxxxx]
force-true'" to work? I'm on 12.1.0.2, enabled monitoring for a sql_id
whose plan is greater than the default for monitoring (> 300 lines). I can
see the sql running, but it isn't being monitored.
Anyone else see this?
Thanks.
Henry
