Re: Oracle 12.2 on SLES12 - How to disable Hardware Lock Elision

  • From: Martin Klier - Performing Databases GmbH <martin.klier@xxxxxxxxxxxxxxxxx>
  • To: tanel@xxxxxxxxxxxxxx
  • Date: Sat, 15 Jul 2017 10:26:53 +0200 (CEST)

Great info, thanks! 

-- 
Martin Klier | Performing Databases GmbH 
Managing Partner | Senior DB Consultant 
Oracle ACE 

martin.klier@xxxxxxxxxxxxxxxxx | https://www.performing-databases.com ;

Von: "Tanel Poder" <tanel@xxxxxxxxxxxxxx>
An: "martin klier" <martin.klier@xxxxxxxxxxxxxxxxx>
CC: "oracle-l" <oracle-l@xxxxxxxxxxxxx>
Gesendet: Samstag, 15. Juli 2017 04:02:09
Betreff: Re: Oracle 12.2 on SLES12 - How to disable Hardware Lock Elision

There was a bug with TSX in some earlier CPU versions:

http://www.pcworld.com/article/2464880/intel-finds-specialized-tsx-enterprise-bug-on-haswell-broadwell-cpus.html
https://bugzilla.redhat.com/show_bug.cgi?id=1406791

Tanel

On Mon, Jul 10, 2017 at 3:30 PM, Martin Klier - Performing Databases GmbH <
martin.klier@xxxxxxxxxxxxxxxxx > wrote:

Hi Listers,

again a nice finding about Oracle 12.2 - this time in combination with SLES12
and a cheap E5 CPU. Somehow (I still can't explain why) I can't use Intel's 
TSX
(Transactional Synchronization Extensions) there, and thus, the Oracle 
Binaries
using libpthread will fail.

What I did about it, is in this blog:
http://www.usn-it.de/index.php/2017/07/10/oracle-rac-12r2-on-sles12-how-to-disable-hardware-lock-elision-support/

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