Comments on: Oracle 11gR2 Grid Infrastructure — Memory Footprint

By: Ben Prusinski

Ben Prusinski — Sun, 16 May 2010 00:21:12 +0000

Yep its a pig thats for sure compared to 11gR1 and 10gR2 RAC. I am waiting for prices on laptops to come down that have 8-16Gb of RAM so that I can setup and run 11gR2 RAC. Unfortunately, by then Oracle 12g will require even more RAM.

By: Vishal Gupta

Vishal Gupta — Fri, 23 Apr 2010 12:36:27 +0000

Incorrect ulimit setting problem with 11gR2 grid infrastructure is due to bug 9084067 (Metalink Note 983715.1). The bug will be fixed in 11.2.0.2.

By: Blogroll Report 05/02/2010 – 12/03/2010 « Coskan’s Approach to Oracle

Blogroll Report 05/02/2010 – 12/03/2010 « Coskan’s Approach to Oracle — Fri, 23 Apr 2010 01:07:17 +0000

[...] 1-How is 11GR2 Grid Infrastructure memory footprint-possible solution to decrease memory Alex Gorbachev-Oracle 11gR2 Grid Infrastructure — Memory Footprint [...]

By: Amit Verma

Amit Verma — Wed, 14 Apr 2010 16:58:18 +0000

Thanks Alex for a wonderful article and to all others who contributed.

@Bernhard- Is your suggestion documented somewhere? Like a metalink note or something?

By: Bernhard de Cock Buning

Bernhard de Cock Buning — Mon, 15 Mar 2010 10:00:42 +0000

Hello,

There is a workaround to decrease the memory usage.

After installation update the ohasd in each of the GRID homes. Add: ulimit -Ss like this:

[root@server1 ~]# vi /u01/app/11.2.0/grid/bin/ohasd

# forcibly eliminate LD_ASSUME_KERNEL to ensure NPTL where available
ulimit -Ss
LD_ASSUME_KERNEL=
export LD_ASSUME_KERNEL

The result, it will same around 500MB of memory.

You still need more memory in compare to 11gR1, but at least it will same 1G for 2 nodes.

By: Oliver

Oliver — Tue, 09 Mar 2010 15:20:49 +0000

With 11gR2 I am back to a single instance rac on my laptop. Not the best for demos, but at least you can test your scripts…

By: Peter Shand

Peter Shand — Mon, 08 Mar 2010 19:49:28 +0000

Thank you, this explains a lot!

I won’t waste any more time trying to install a sandbox 11gR2 RAC in vm’s. I was able to run the grid install on a 4 gig box, but it was very slow, and debugging was practically impossible. I am now encouraged to retry with 11gR1 or 10GR2.

By: Alex Gorbachev

Alex Gorbachev — Mon, 08 Mar 2010 01:05:35 +0000

@Tim: Well, “terminal release” is very relative. In regards to Oracle Clusterware, it was terminal release in 11gR1 because 11gR2 has completely new stuff under the hood.

@Doug: No. No demos on 11gR2 RAC – it hardly fits on my Mac and I couldn’t risk it going wrong.

By: Kim Njeru

Kim Njeru — Sun, 07 Mar 2010 21:11:28 +0000

This is disappointing. It is amazing that we ran enterprise software on a lot less memory not too long ago.
The fact that memory is cheaper shouldn’t be a license to unbuckle the belt on memory hogging software. I liken this to overeating just because food is cheaper.

By: Doug Burns

Doug Burns — Sun, 07 Mar 2010 14:21:10 +0000

Upgrading to 11g Release Grid Infrastructure? You probably want to read on…

Planning demos of 11g Release 2 Grid Infrastructure? You probably want to read on …

You have my sympathy!