sap on linux
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SAP on Linux Uwe Heinz Product Manager SAP LinuxLabMonth 09, 2013
© 2013 SAP AG or an SAP affiliate company. All rights reserved. 2Public
Introduction & Overview (SAP and LINUX)
Foundation of Linuxlab
SAP Netweaver
Linux develpoment plattform
SAP BWA
SAP HANA
1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013
CeBit 99
and growing ...
SAP supports only : SLES, RHEL and Oracle Linux
© 2013 SAP AG or an SAP affiliate company. All rights reserved. 3Public
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. 4Public
SAP Solutions on Linux - Trends
Reasons for deploying Linux:
- Cost Reduction
- High availability
- Performance improvement
- Low training efforts (Unix-> Linux)
cost reduc-tion
HA Perf Training other0
102030405060708090
Chart Title
Series1
* Source RAAD
© 2013 SAP AG or an SAP affiliate company. All rights reserved. 5Public
SAP Solutions on Linux - Trends
1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013
Linux QA and Dev
Linux Appl Server
Linux DB Server
Today > 12000 DB
installations on Linux
Today > x APP installations on
Linux
Today Linux is favoured target for SAP OS Migrations
15000 and more
Reliability,stability virtualization HA and DR
© 2013 SAP AG or an SAP affiliate company. All rights reserved. 6Public
Linux Benchmarks
Windows:
12930 SD UserReferenz *2013018
Linux:
12735 SD UserReferenz *2013017
Same HW4 socket
Linux:
23250 SD UserReferenz *2013014
8 socket Server
© 2013 SAP AG or an SAP affiliate company. All rights reserved. 7Public
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. 8Public
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 resources
from general file system I/O caching
Available since SLES 11 SP1: vm.pagecache_limit_mb Documented in SAP note 1557506:
Linux paging improvements
0 M
B I/O
1024
MB I/
O
4096
MB I/
O
8192
MB I/
O
1638
4 M
B I/O
2457
6 M
B I/O
3276
8 M
B I/O
4915
2 M
B I/O
6553
6 M
B I/O
1310
72 M
B I/O
70.00%
75.00%
80.00%
85.00%
90.00%
95.00%
100.00%
105.00%
110.00%
Influence of pagecache limit on throughput
3.0.34-0.7-default pagecache limit set 3.0.34-0.7-default
© 2013 SAP AG or an SAP affiliate company. All rights reserved. 9Public
SAP Start Service High Availability interface
sapstartsrv is now cluster-aware Partners can implement an interface
SUSE on-site LinuxLab engineershelped building up reference systems
Wrote a documentation and a reference implementation of howto 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
SAP and SUSE13+ years of technology and engineering collaboration
• Front runner technologies‒ 1st Amazon EC2 OS for SAP
‒ 1st validated open source HA
‒ 1st validated virtualization
• Strategic OS for:‒ SAP HANA
‒ SAP BWA
‒ 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
‒ Software development support for SAP
‒ 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
‒ 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
13
http://scn.sap.com/docs/DOC-31701
14
Important Interfaces to Integerate 3rd party HA Solutions
http://scn.sap.com/docs/DOC-25453
15
http://scn.sap.com/docs/DOC-28875
16
SUSE Linux Enterprise Server for SAP Applications
SUSE Linux Enterprise Server
High Availability Extensions
SAP Installation Framework
Page Cache Limit
ClamSAP
ESPOS
SAP specific additional update channel
Web YaST
17
SLES for SAP Applications 11 SP2Enhancements
• 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).
18
SAP Installation Wizard
19
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
SLES for SAP Applications 11 SP2Page Cache Limit
SAP customers are using Linux to run the database and/or application server
of these are running their workloads on SUSE Linux Enterprise
SUSE Linux Enterprise is SAP's development platform for UNIX and Linux
SUSE Linux Enterprise is the recommended and supported OS of choice for SAP HANA
First Linux distributor to certify HA extension for integration with SAP Netweaver
16,800
70%
#1
#1
#1
SAP and SUSE by the numbers
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
More InformationSUSE 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
Corporate HeadquartersMaxfeldstrasse 590409 NurembergGermany
+49 911 740 53 0 (Worldwide)www.suse.com
Join us on:www.opensuse.org
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