My Favorites

Close

Please to see your favorites.

  • Bookmark
  • Email Document
  • Printer Friendly
  • Favorite
  • Rating:

Memory allocation issues on huge memory servers running Oracle database

This document (7018190) is provided subject to the disclaimer at the end of this document.

Environment

SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server 12 Service Pack 1 (SLES 12 SP1)
SUSE Linux Enterprise Server 11 Service Pack 3 (SLES 11 SP3)
SUSE Linux Enterprise Server 11 Service Pack 4 (SLES 11 SP4)
SUSE Linux Enterprise Server 12 Service Pack 2 (SLES 12 SP2)

Situation

Servers with huge memory running into memory allocation and paging issues. NUMA is set to 'off' on the affected servers.

Resolution

Remove the boot option 'numa=off' and reboot.

Cause

Customer who have experience of running Oracle database on Oracle Linux may be familiar with using the Oracle Linux pre-install rpms for Oracle database which automatically add 'numa=off' to the default boot item in the boot menu.

SUSE's standpoint is that it can have a crippling effect on a server by forcing all memory to be viewed as belonging to node 0 and preventing the kernel from making  node-local memory allocations.
There is no such requirement on SUSE Linux and SUSE advises that unless NUMA is shown to cause an issue for a specific workload, that NUMA should be enabled regardless of whether the version of Oracle database being run has any NUMA specific code enabled or disabled.

SUSE Linux has it's own version of a pre-Oracle database environment setup tool. It is called orarun and can be installed by selecting the Oracle Server pattern or by installing the orarun package from the installation media.

Disclaimer

This Support Knowledgebase provides a valuable tool for NetIQ/Novell/SUSE customers and parties interested in our products and solutions to acquire information, ideas and learn from one another. Materials are provided for informational, personal or non-commercial use within your organization and are presented "AS IS" WITHOUT WARRANTY OF ANY KIND.

  • Document ID:7018190
  • Creation Date:25-OCT-16
  • Modified Date:25-JAN-17
    • SUSESUSE Linux Enterprise Server

Did this document solve your problem? Provide Feedback

< Back to Support Search

SUSE Support Forums

Get your questions answered by experienced Sys Ops or interact with other SUSE community experts.

Join Our Community

Support Resources

Learn how to get the most from the technical support you receive with your SUSE Subscription, Premium Support, Academic Program, or Partner Program.


SUSE Customer Support Quick Reference Guide SUSE Technical Support Handbook Update Advisories
Support FAQ

Open an Incident

Open an incident with SUSE Technical Support, manage your subscriptions, download patches, or manage user access.

Go to Customer Center