Tuesday, 13 August 2013

OBIEE 11g, Web Logic, Times Ten, Essbase, Endeca Services and RAM Memory Usage


Linux comes with different set of commands to check memory usage. The free command displays the total amount of free and used physical and swap memory in the system, as well as the buffers used by the kernel. The vmstat command reports information about processes, memory, paging, block IO, traps, and CPU activity. Finally, you can use the top, and/or atop/htop commands which provides a dynamic real-time view of a running system. top and friends can display system summary information as well as a list of tasks currently being managed by the Linux kernel.

Example Command for memory usage are as follows

$ cat /proc/meminfo
$ less /proc/meminfo
$ more /proc/meminfo
$ egrep --color 'Mem|Cache|Swap' /proc/meminfo
$ free –m =- To display free memory size in MB (megabytes):
$ free -t –m –
Additional Commands
$ vmstat
$top
$atop – require installation of package
$htop – require installation of package

GNOME Desktop: GUI tool to see memory usage

The "Gnome System Monitor" application enables you to display basic system information and monitor system processes, usage of system resources, and file systems. You can also use System Monitor to modify the behavior of your system. You can start System Monitor by visiting System menu > Choose Administration > System Monitor option. Or type the following command at the shell prompt:

gnome-system-monitor




For further details please refer following URL


Memory Usage for OBIEE 11g, Web Logic, Times Ten, Essbase, Endeca Services

How much RAM is required for standard services?  Is there enough RAM available for system processes?  Is there enough RAM available for temp and cache files? In-memory database inclusion would be supported by existing RAM?

These are the set of questions which are relevant in in-memory analytical application days. This is an attempt to list down the standard BI services along with the memory consumptions figures.
For simplicity I am using the Sample Apps virtual machine which has database, times ten and all BI components installed on same virtual compartment.

Database   Services - (12 c) 500 MB RAM Consumption
In a Live scenario the database services should not be running on BI Application Server.

WLS Admin Server - 800 MB RAM Consumption

BI Managed Server - 1GB RAM Consumption

OBI OPMN Services and Essbase Services - 700 MB RAM consumption

Times Ten - 250 MB RAM Consumption
Endeca Server - 350 MB RAM + any attached data stores

Endeca Studio - 650 MB RAM Consumption

I hope information put together in this blog is useful.

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