SSH Consumes High CPU When GC Emagent Monitors RAC Nodes (Doc ID 1096243.1)

Last updated on OCTOBER 22, 2010

Applies to:

Oracle Server - Enterprise Edition - Version: 10.2.0.1 and later   [Release: 10.2 and later ]
Information in this document applies to any platform.

Symptoms

The EM GC agent needs to check the status of CRS and it does so by running:

$ORA_CRS_HOME/bin/cluvfy comp crs -display_status -n node1,node2,...

Which basically will be a call java to run:

oracle.ops.verification.client.CluvfyDriver comp crs -display_status -n node1,node2,...


You will see a child SSH process consuming a lot of CPU and sometimes even taking up 100% of CPU in user mode in a hang status.

Changes

The environment uses the commercial Tectia SSH - http://www.ssh.com

The problem does not happen with default OpenSSH.

Cause

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