Pre-11.2: Using Diagwait as a diagnostic to get more information for diagnosing Oracle Clusterware Node evictions
(Doc ID 559365.1)
Last updated on AUGUST 04, 2018
Applies to:Oracle Database - Enterprise Edition - Version 10.1.0.5 to 188.8.131.52 [Release 10.1 to 11.1]
***Checked for relevance on 05-Mar-2015***
Oracle Clusterware evicts the node from the cluster when
- Node is not pinging via the network heartbeat
- Node is not pinging the Voting disk
- Node is hung/busy and is unable to perform either of the earlier tasks
In Most cases when the node is evicted, there is information written to the logs to analyze the cause of the node eviction. However in certain cases this may be missing, the steps documented in this note are to be used for those cases where there is not enough information or no information to diagnose the cause of the eviction for Clusterware versions less than 11gR2 (184.108.40.206).
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