Dequeue Delay Experienced After RAC Reconfiguration

(Doc ID 406493.1)

Last updated on SEPTEMBER 15, 2015

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.1 to 10.2.0.3 [Release 10.2]
Oracle Database - Enterprise Edition - Version 11.1.0.6 to 11.1.0.6 [Release 11.1]
Oracle Database - Enterprise Edition - Version 10.1.0.2 to 10.1.0.5 [Release 10.1]
Information in this document applies to any platform.

Symptoms

A dequeue delay of the order of  several minutes is experienced after reconfiguration in a RAC cluster.

This only occurs for messages which are enqueued and dequeued across different nodes.

The errorstack and short errostack of the waiting dequeue sessions are all of the form


skgpwwait<-kslwaitns<-kslwait<-kwqidexfcy<-kwqidsc81i<-kwqidrdq<-kwqidsfmp<-
kwqidafm<-kwqididqx<-kwqidxdeq0<-kwqiadtdeq



and the sessions are waiting in kwqidexfcy. This is identical to <Bug 5506702> and at least confirms that this is not an Advanced Queuing (AQ) issue as such as the posts from the enqueuing session are not being received by the dequeueing session.

Cause

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