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Operating Systems AIX Crash dump and Panic message : RSCT Dead Man Switch Timeout for HACMP; halting non-responsive node Post 303042277 by Neo on Friday 20th of December 2019 05:36:14 AM
Old 12-20-2019
Well, it appears to me you have a performance issue (resource issue) causing the failure.

It could be a disk error, a bus error, or a file system error causing the I/O problem; or like the message says, it could be a memory issue.

So, you should probably look in your syslog files and boot messages for errors related to the above recommendations:

Code:
  
        Recommended Actions
        Examine I/O and memory activity on the system
        Reduce load on the system
        Tune virtual memory parameters

I would start at the top (look for errors in log files) first.
 

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cr_open(3)						     Library Functions Manual							cr_open(3)

NAME
cr_open() - open crash dump for reading SYNOPSIS
DESCRIPTION
The library call opens a crash dump and passes back a crash dump descriptor. The path argument points to a path name naming a crash dump directory or file, and must not exceed bytes in length. The CRASH * to which crash_cb points is set to a crash dump descriptor, which can then be passed to the other functions to access the crash dump. flags is a bitmask of zero or more of the following flag values, which affect the operation of future calls to libcrash routines for this crash dump, except for cr_verify(3), which has its own flags parameter. The library will not attempt to verify checksums of files in the crash dump if this flag is set. The library will write messages to stderr during time-consuming operations (decompressions and checksums) if this flag is set. RETURN VALUE
Returns zero for success. Other possible return values are described in libcrash(5). EXAMPLES
The following call to opens crash dump contained in the directory and returns the crash dump descriptor For an example of reading the crash dump see the cr_read(3) manual entry. AUTHOR
was developed by HP. SEE ALSO
cr_close(3), cr_perror(3), libcrash(5). cr_open(3)
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