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@xxxxxxxxxxxxx <oracle-l-bounce@xxxxxxxxxxxxx> On Behalf
Of Pap
Sent: Samstag, 11. Juni 2022 15:20
To: Oracle L <oracle-l@xxxxxxxxxxxxx>
Subject: Reading resource busy error system trace
*** E-Mail from outside Vontobel: Do not click on links or open attachments
unless you know the content is safe. ***
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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