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Full Discussion: Unusual system bog down
Operating Systems Solaris Unusual system bog down Post 302890204 by hicksd8 on Tuesday 25th of February 2014 04:48:00 PM
Old 02-25-2014
Well in situations like this (reboot performed) one can only offer suggestions from experience.

With uptime at +150, multiple zones and multiple Oracle instances I would be looking at two things.

1. Check the content of /tmp directories on all zones to see if one of them has five million files in it. If so, do we know why? Cleaning them up often clears the issue. If this is the problem (an O/S problem) then I would expect the problem to recur in the short term.

2. What is the setting of the parameter "pg_contig_disable" in the /etc/system files? On a long running uptime and Oracle instances, memory can become very fragmented and if Oracle dB requests contiguous memory then the system virtually hangs whilst working sets are shuffled to give Oracle what it wants. The cure is either to increase memory size or allow Oracle to use non-contiguous memory. If this is the problem (an Oracle problem) then I would expect the problem not to recur in the short term.

This really isn't very helpful I know, just thinking aloud.
Last edited by hicksd8; 02-26-2014 at 10:08 AM..
 

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LEARN ABOUT X11R4

install-solaris

install-solaris(1M)													       install-solaris(1M)

NAME

       install-solaris - install the Solaris operating system

SYNOPSIS

       install-solaris

       install-solaris	invokes  the  Solaris  Install	program. Depending on graphical capability and available memory at the time of invocation,
       install-solaris invokes either a text-based installer or a graphical installer.

       The following minimum requirements for physical memory dictate which features are available during installation:

       For SPARC machines:

       128 MB

	   Minimum physical memory for all installation types

       128 MB

	   Minimum physical memory required for windowing system

       384 MB

	   Minimum physical memory required for graphical-based installation

       For x86 machines:

       256 MB

	   Minimum physical memory for all installation types

       256 MB

	   Minimum physical memory required for windowing system

       512 MB

	   Minimum physical memory required for graphical-based installation

       In some cases, even if the minimum physical memory is present, available virtual memory after system startup can limit the number  of  fea-
       tures available.

       install-solaris	exists	only  on  the Solaris installation media (CD or DVD) and should be invoked only from there. Refer to the  for more
       details.

       install-solaris allows installation of the operating system onto any standalone system. install-solaris loads the software available on the
       installation media. Refer to the  for disk space requirements.

       Refer to the  for more information on the various menus and selections.

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcdrom  (Solaris instal-  |
       |			     |lation media)		   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+

       pkginfo(1), install(1M), pkgadd(1M), attributes(5)

       It is advisable to exit install-solaris by means of the exit options in the install-solaris menus.

								    23 Sep 2005 					       install-solaris(1M)
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