select from ts$ in v$undostat.maxqueryid
Date: Tue, 4 Feb 2020 08:17:26 +0000
Message-ID: <8675_1580804271_5E3928AF_8675_1538_1_1491d0362a5a4fb4aafe243f038c719a_at_vontobel.com>
The following query (sql_id is 89w8y2pgn25yd) was recorded in v$undostat.maxqueryid in a 12.2. database during a period of a high undo usage:
select ts# from sys.ts$ where ts$.online$ != 3 and bitand(flags,2048) != 2048 ;
select
undoblks,txncount,maxquerylen,maxconcurrency,activeblks
from v$undostat u
where maxqueryid='89w8y2pgn25yd'
;
UNDOBLKS,TXNCOUNT,MAXQUERYLEN,MAXCONCURRENCY,ACTIVEBLKS
39199,4027,1378,5,2531960
...
The query itself has never been captured in v$active_session_history which might indicate that the cursor remains open during some other activity.
There were two deletes running in the observed time period.
Does anybody know what could trigger the execution of the query above?
Best regards,
Nenad
https://nenadnoveljic.com/blog/
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-- http://www.freelists.org/webpage/oracle-lReceived on Tue Feb 04 2020 - 09:17:26 CET