Users Blocked and Waiting on 'Wait for EMON to Process Ntfns' When Using DCN (Doc ID 1257264.1)

Last updated on AUGUST 09, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 11.1.0.7 to 11.2.0.3 [Release 11.1 to 11.2]
Oracle Database - Enterprise Edition - Version 11.2.0.4 to 11.2.0.4 [Release 11.2]
Information in this document applies to any platform.
***Checked for relevance on 26-Feb-2013***

Symptoms

Sessions getting blocked by a Database Change Notification (DCN) subscriber on wait event “Wait for EMON to process ntfns”.

Changes

Implemented Database Change Notification (DCN) through JDBC clients.

Cause

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