Solaris Cluster 3.x/4.x Node/System/Server is Currently Hangs or Hung Resolution Path
Last updated on APRIL 02, 2018
Applies to:Solaris Cluster - Version 3.1 and later
Oracle Solaris on SPARC (64-bit)
Oracle Solaris on SPARC (32-bit)
Oracle Solaris on x86-64 (64-bit)
Oracle Solaris on x86 (32-bit)
Applications controlled by Sun Solaris Cluster hang, OS and/or Sun Solaris Cluster commands fail to complete or node generally becomes unresponsive
Overview: This document is designed to help diagnose the cases where customer states one or more nodes in a cluster are currently hung by further refining what may be hung. NOTE: This document is not designed for cases when the node was 'hung' and then rebooted, nor for cases where a postmortem with a core is requested.
Background: By definition, a system hang is when the entire system is unresponsive and the only remedy is to send the system a break signal and generate a core dump. Part of the difficulty in working with system hangs is knowing whether or not the system is actually hung. Sometimes it appears that the system is hung when in fact only a particular application is hung. For example users of a database may report that "the system is hung" when in fact the system itself is still running but the database application has hung.
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