SuperCluster T5-8 Primary Domain Intermittent Performance Issue: ssh Connections Time Out, Console Connection Very Slow (Doc ID 2211410.1)

Last updated on FEBRUARY 27, 2017

Applies to:

Oracle SuperCluster T5-8 Hardware - Version All Versions to All Versions [Release All Releases]
SPARC SuperCluster T4-4 - Version All Versions to All Versions [Release All Releases]
SPARC SuperCluster T4-4 Full Rack - Version All Versions to All Versions [Release All Releases]
SPARC SuperCluster T4-4 Half Rack - Version All Versions to All Versions [Release All Releases]
Oracle SuperCluster M6-32 Hardware - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.

Symptoms

Node initially went to hung state, ssh could not work. System rebooted w/o CRS/RAC/RDBMS running, and problem re-occurs same time each day.
Subsequent console log in sessions via ILOM exhibiting very poor response times intermittently.
If any data collection process is started it exacerbates the problem. E.g. Exachk, explorer, GUDS, etc.

Changes

 In this case there were no changes. System was working then "suddenly" started having problems.

Cause

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