Re: Reading resource busy error system trace

Thank You Nenad.
So actually here the session/Alter statement, which failed, is from the informatica power center session only. So do you mean we should search the body of the original trace file from which this trace continued from i.e "u01/app/oracle/diag/rdbms/DB1p/DB11/trace/DB11_ora_89092_8.trc" rather this one. And in that trace the sql statements near the "final blocker" string will be the cause of this error?

On Sun, Jun 12, 2022 at 2:08 PM Noveljic Nenad <nenad.noveljic_at_vontobel.com> wrote:

> This file isn’t the beginning of the system dump – it continues from
> another trace file: (TRACE CONTINUED FROM FILE)
>
>
>
> The information of the root blocker is at the beginning of the system
> dump. It’s straight forward - look for the string “Final Blocker” for your
> Powercenter session.
>
>
>
> Best regards,
>
>
>
> Nenad
>
>
>
> *From:* oracle-l-bounce_at_freelists.org <oracle-l-bounce_at_freelists.org> *On
> Behalf Of *Pap
> *Sent:* Samstag, 11. Juni 2022 15:20
> *To:* Oracle L <oracle-l_at_freelists.org>
> *Subject:* Reading resource busy error system trace
>
>
>
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> I had posted this one in the past here. But now having the trace collected
> , finding it hard to understand the trace. Appreciate guidance here.
>
> Background:-
>
> We were encountering intermittent Ora-0054 error on specific time towards
> the end of the month for a job and from the line number noted in the error
> log it's pointing to the alter statement which enables reference
> constraints after a direct path data load and commit.
>
> But we tried monitoring it a few times during the error period/run time
> but were not seeing any lock on the base table but still the job failed and
> it succeeded after a couple of rerun attempts. We tried enabling the system
> trace as below and did capture the trace.
>
> I am unable to understand the culprit of this error out of this system
> trace. I posted the trace in the below location with a few masked obj
> names. It has a lot of information(~50K+ lines) but I think I am supposed
> to look into a certain section of it, but I am not able to find that out.
> Could you please guide me here?
>
> alter system set events "00054 trace name systemstate level 266, lifetime
> 1";
>
> https://gist.github.com/oracle9999/10e33916ad43748b7802719812b4ddc2
>
> *****Below statements failing
>
> ALTER TABLE SCHEMA1.MAIN_TAB ENABLE NOVALIDATE CONSTRAINT MAIN_TAB_R01;
>
> ALTER TABLE SCHEMA1.MAIN_TAB ENABLE NOVALIDATE CONSTRAINT MAIN_TAB_R03;
>
> ORA-00054: resource busy and acquire with NOWAIT specified or timeout
> expired
>
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