Waiting event: reliable message

Author: skate
Time: 2011/05/03

 

Waiting event: reliable message

 

The Metalink description is as follows:

 

 

When you send a message using the 'ksr' intra-instance Broadcast
Service, the message publisher waits on this wait-event
All subscribers have consumed the 'reliable message' just sent.
The publisher waits on this wait-event for three seconds and
Then re-tests if all subscribers have consumed the message, or
Until posted.

 

That is to say, when a message is sent across instances, the sender expects to receive the reply from the subscriber. If no trusted reply is received,
It will remain in the waiting state. Wait 3 seconds until you receive replies from all subscribers or wake up.

 

In the RAC environment, if this wait event appears in the top 5, it indicates that the communication between nodes has encountered a problem and a node cannot be obtained.
The trusted reply of another node. This wait event has seriously affected the performance. In this case, check whether the communication between nodes is
Whether the network load is too large or not.

 

 

 

 

 

 

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