blocking session info belatedly displayed from (g)v$session
(Doc ID 2778416.1)
Last updated on JUNE 01, 2021
Applies to:Oracle Database - Enterprise Edition - Version 22.214.171.124 and later
Information in this document applies to any platform.
On : 126.96.36.199 version, RDBMS
From (g)v$session view the blocking session information does not appear immediately and there is a delay for a certain period of time. The information is displayed after about 10 seconds from actual session waiting occurrence.
SYSDATE EVENT WAIT_TIME_MICRO/1000000 BLOCKING_INSTANCE BLOCKING_SESSION STATE
20210506 16:40:17 enq: TX - row lock contention .269874 WAITING
20210506 16:40:18 enq: TX - row lock contention 1.337202 WAITING
20210506 16:40:19 enq: TX - row lock contention 2.435408 WAITING
20210506 16:40:26 enq: TX - row lock contention 8.981453 WAITING
20210506 16:40:27 enq: TX - row lock contention 10.091895 1 29 WAITING <<---! in about 10 seconds, blocking instance=1, blocking sessoin=29 displayed.
20210506 16:40:28 enq: TX - row lock contention 11.16133 1 29 WAITING
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