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

  • From: Tanel Poder <tanel@xxxxxxxxxxxxxx>
  • To: martin.klier@xxxxxxxxxxxxxxxxx
  • Date: Fri, 14 Jul 2017 21:02:09 -0500

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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