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Full Discussion: Oracle memory usage on Solaris box
Operating Systems Solaris Oracle memory usage on Solaris box Post 302457926 by radoulov on Wednesday 29th of September 2010 05:53:19 AM
Old 09-29-2010
Quote:
We were receiving out of process memory errors - unable to allocate .. bytes of memory for PGA
Could you provide the exact error code and message (ORA- ...)?

Quote:
vmstat - sr was increasing constantly and used oracle EM to monitor memory usage
The scan rate is not enough, check if si/so have values different than 0
(or if pi/po have high values) with vmstat -S.

Quote:
I can check within Oracle by checking v$pgastat , v$process etc
Could you post the output from:

Code:
set pages 200 lines 132
col name for a40
select * from v$pgastat;

Quote:
Based on the average RSS size I am multuiplying it by total processes to compute total memory usage
of these processes, is this the right way of computing the memory usage of these processes?
Just sum the RSS values of all those processes:

Code:
ps -eorss,args |
  nawk 'END { 
    print s/1024, "MB"
    }
    /PasswordAuthentication=no/ {
      s += $1
      }'



---------- Post updated at 11:53 AM ---------- Previous update was at 11:42 AM ----------

Could you also post the output of the following command:

Code:
set pages 200 lines 132
select server, count(1) from v$session
group by server;

 

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LEARN ABOUT CENTOS

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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