- Introduction SAP Linuxlab - SAP's Linux strategy - Linuxlab project examples: Pagecache Limit, HA certification - SUSE's role in the SAP Linuxlab

1. SAP on Linux
Uwe Heinz Product Manager SAP LinuxLab
Month 09, 2013

2. Introduction & Overview (SAP and LINUX)
SAP HANA
SAP BWA
Linux
develpoment
plattform
SAP
Netweaver
Foundation
of Linuxlab
and growing ...
CeBit
99
1999
2000
2001
2002
2003
2004
2005
SAP supports only :
© 2013 SAP AG or an SAP affiliate company. All rights reserved.
2006
2007
2008
2009
2010
2011
2012
2013
SLES, RHEL and Oracle Linux
Public
2

3. Introduction & Overview (SAP and LINUX)
Open Standards (support of multiple solutions)
HA solutions
• SUSE HA
• RH Cluster
• Veritas
• Steeleye
• HP Service guard
Database
• HANA
• Sybase
• Maxdb
• Oracle
• DB/2
OS/Distributions
• SLES
• RHEL
• OL
Hardware
• X86_64
• Linux on Power
• Linux OS390
© 2013 SAP AG or an SAP affiliate company. All rights reserved.
Public
3

4. SAP Solutions on Linux - Trends
Reasons for deploying Linux:
-
Cost Reduction
-
High availability
-
Performance improvement
-
Low training efforts (Unix-> Linux)
90
80
70
60
50
40
30
20
10
0
* Source RAAD
© 2013 SAP AG or an SAP affiliate company. All rights reserved.
cost
reduction
HA
Perf
Training
other
Public
4

5. SAP Solutions on Linux - Trends
Today Linux is
favoured target for
SAP OS Migrations
Linux Appl
Server
Linux
QA and Dev
2000
2001
2002
2003
© 2013 SAP AG or an SAP affiliate company. All rights reserved.
Today >
12000 DB
installations
on Linux
15000 and
more
Today > x APP
installations on
Linux
Reliability,stability
1999
Linux DB
Server
2004
virtualization
2005
2006
2007
2008
HA and DR
2009
2010
2011
2012
Public
2013
5

6. Linux Benchmarks
Windows:
Linux:
Linux:
12930 SD User
12735 SD User
23250 SD User
Referenz *2013018
Referenz *2013017
Referenz *2013014
Same HW
4 socket
© 2013 SAP AG or an SAP affiliate company. All rights reserved.
8 socket
Server
Public
6

7. SAP on Linux support
Common support message handling via SAP ticket system
 Operating support related messages are processed on
component BC-OP-LNX
 On development level LinuxLab members will take over
Direct access to distribution- or technology partner specific
know-how
 Integrated partner’s employees
 Further analysis and processing inside the SAP ticket system
 If necessary, hand-over of the support message to the
partner’s support system
 Parallel customer ticket in the partner’s support system
 Direct forwarding via an integrated support infrastructure, e.g. via
SuSE’s SAP Solution Manager integration
© 2013 SAP AG or an SAP affiliate company. All rights reserved.
Public
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8. Example of a LinuxLab project: Pagecache Limit
Needed to configure a system’s available amount of pagecache
 Known in Unix environments but not on Linux (yet)
 Linux allows to tune the Linux Kernel’s general pagecache strategy
(vm.swappiness)
Helpful for system sizing
 Protect the SAP system’s memory resourcesInfluence of pagecache limit on throughput
from general file system I/O caching
110.00%
Available since SLES 11 SP1:
 vm.pagecache_limit_mb
 Documented in SAP note 1557506:
Linux paging improvements
100.00%
90.00%
80.00%
70.00%
3.0.34-0.7-default pagecache limit set
© 2013 SAP AG or an SAP affiliate company. All rights reserved.
3.0.34-0.7-default
Public
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9. SAP Start Service High Availability interface

sapstartsrv is now cluster-aware
 Partners can implement an interface



SUSE on-site LinuxLab engineers
helped building up reference systems
Wrote a documentation and a
reference implementation of how
to use the script connector
Partner certification program available

To certify the start/stop infrastructure within HA setups

To clarify support responsibilities

See http://scn.sap.com/docs/DOC-26718 for more details
© 2013 SAP AG or an SAP affiliate company. All rights reserved.
Public
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10. SAP and SUSE
13+ years of technology and engineering collaboration
•
Front runner technologies
‒
‒
1st validated open source HA
‒
•
1st Amazon EC2 OS for SAP
1st validated virtualization
Strategic OS for:
‒
‒
SAP BWA
‒
•
SAP HANA
SAP Business ByDesign
Integrated Enterprise Support

11. SUSE at the SAP Linux Lab
Representing SUSE at SAP and in the SAP partner ecosystem for all
technical SUSE Linux related engagements, projects, issues and
questions
•
Responsibilities
‒
‒
Support of SUSE NTS for escalating L3 customer issues
‒
Certification of SAP products on SUSE Linux Enterprise
‒
Strategic Linux related projects between SUSE and SAP:
appliances, high availability, virtualization
‒
Maintenance of a strong contact network within SAP and the SAP
partner ecosystem
‒
11
Software development support for SAP
Ensure maximum compatibility of SUSE Linux Enterprise for SAP
applications and databases

12. SUSE Linux Enterprise Server
Priority Support for SAP Applications
®
●
●
●
●
Integrated in SAP
Support Process
24x7
Leverages SAP
Customer Support
Network
Quick support from
SAP LinuxLab Experts
● SAP Note 1056161 SUSE Priority Support
for SAP-Applications
12

13. http://scn.sap.com/docs/DOC-31701
13

14. Important Interfaces to Integerate 3rd party HA Solutions
http://scn.sap.com/docs/DOC-25453
14

15. http://scn.sap.com/docs/DOC-28875
15

16. SUSE Linux Enterprise Server
for SAP Applications
Page
Cache
Limit
Clam
SAP
High Availability
Extensions
ESPOS
Web
YaST
SAP Installation
Framework
SUSE Linux Enterprise Server
SAP specific additional update channel
16

17. SLES for SAP Applications 11 SP2
Enhancements
•
Support for Kernel 2.6 compatibility environment
•
SAP Applications require uname output of 2.6.x
•
uname26 and PAM module providing compatibility environment
•
SAP Notes 1629558 and 1310037
“SUSE Linux Enterprise 11 SP2’s new Linux kernel version 3.0 offers many new features and enhancements
that will help SAP customers utilize the newest technology improvements with their SAP infrastructures,
together with SUSE, we're developing easy installation and migration paths for existing SAP installations,
such as SAP NetWeaver, to support Linux kernel 3.0 so our customers can confidently run SAP solutions
on SUSE Linux Enterprise 11 SP2."
(Helge Deller, head of SAP LinuxLab at SAP).
17

18. SAP Installation Wizard
18

19. SLES for SAP Applications 11 SP2
Page Cache Limit
Tells kernel that once page cache
is filled to configured
limit, application memory is more
important and should not be paged
out
No memory paged out if memory
footprint of the workload plus the
configured page cache limit does
not exceed the amount of physical
RAM
SAP Note 1557506: Linux paging
improvement
19

20. SAP and SUSE by the numbers
16,800
70%
SAP customers are using Linux to run the
database and/or application server
of these are running their workloads on
SUSE Linux Enterprise
#1
SUSE Linux Enterprise is SAP's development
platform for UNIX and Linux
#1
SUSE Linux Enterprise is the recommended
and supported OS of choice for SAP HANA
#1
First Linux distributor to certify HA extension for
integration with SAP Netweaver

21. SAP-Notes
Relevant SAP Notes*
#
171356 - SAP Software on Linux: Essentials
#
1310037
- SUSE LINUX Enterprise Server 11: Installationsguide
#
1056161
- SUSE Priority Support for SAP Applications
#
1557506
- Linux paging improvements
#
1122387
- Linux: SAP Support in virtualized Environments
VMware Knowledge base
•
1034165 Disabling simultaneous write protection provided by VMFS using
the multi-writer flag
* SAP S-User Id required

22. More Information
SUSE Websites
•
www.suse.com/smart
•
SUSE Linux Enterprise Server for SAP applications
•
SUSE and SAP Alliance
•
SUSE Linux Enterprise and SAP HANA
SUSE Linux Enterprise for SAP Applications
•
Overview and Features
•
Video Introduction
•
Solutions Guide
•
Success Stories
•
Whitepapers
•
Best Practice Guides (High Availability)
•
FAQ
•
Technical Information
•
Evaluation Download

23. Corporate Headquarters
+49 911 740 53 0 (Worldwide)
Join us on:
Maxfeldstrasse 5
90409 Nuremberg
Germany
www.suse.com
www.opensuse.org