Re: strange wait events
Date: Sun, 12 Feb 2023 20:56:54 +0200
Message-ID: <CA+riqSWbyNP316i+P_+GppjaCd_xWb4dDtRRN6nc_qPNdM4Euw_at_mail.gmail.com>
Thank you very much for all the suggestions.
After all, I traced everything in the DB. There were a lot of triggers
involved, but one of them was firing for every action on a table, a
procedure which was dropping and recreating a job. This had a significantly
bigger impact in RAC vs single Instance and explained the significant JS
kgl get object wait
What was strange was that there was a small percentage in the wait
events about result cache (and the query for checking reliable messages had
the biggest numbers for a result cache component) but I didn't find any
result cache hint, probably there is a built-in feature in pl/sql about
result cache ... not aware of this.
Thank all again for all the help
În sâm., 11 feb. 2023 la 12:25, Jonathan Lewis <jlewisoracle_at_gmail.com> a
scris:
>
> Have you got any further finding out where your strange wait events are
> coming from ?
>
> Regards
> Jonathan Lewis
>
>
> On Thu, 2 Feb 2023 at 16:03, Laurentiu Oprea <laurentiu.oprea06_at_gmail.com>
> wrote:
>
>> Dear oracle community,
>>
>> I`m running some tests on 19.17 DB (rac and non-rac - data and data
>> structures are absolutely identical).
>>
>> In the RAC DB I see that an updated generated by a triggered
>> significantly slower compared with single instance and top wait events are:
>> 65% JS kgl get object wait
>> 11% reliable messages
>> 8% library cache pin
>> 5% CPU
>>
>> Anyone have any idea what JS kgl get object wait event is and how can I
>> diagnose the cause for it?
>>
>> THank you in advance.
>>
>
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