SAP on AIX

Find information, blog posts, and useful resources for running your SAP system on the IBM operating system AIX.

Featured Content

SAP Applications with AIX Live Update

You want to avoid costly SAP downtimes when updating your AIX server to newer technology levels or service packs? Check out the White Paper from IBM which validated the AIX Live Update capability in an SAP landscape.

NEW: Video showing SAP with Live Update in actionLink to White PaperSAP Note 2977742

SAP on AIX Best Practices

An update to the well-known Best Practices guide has been published by IBM. This version concentrates purely on SAP on AIX and contains up-to-date information about how to optimally utilize and configure AIX and PowerVM for SAP.

Link to IBM Whitepaper

SMC-R on AIX for SAP - Experience report

With IBM AIX 7.2 TL 2, the AIX operating system supports the new communication protocol solution SMC-R. This IBM white paper demonstrates and summarizes the benefits of using SMC-R in a distributed SAP on AIX environment.

Link to IBM White Paper

IBM AIX Enhancements and Modernization

Check out this IBM Redbook for the latest features of the AIX operating system, including those that became available recently with AIX 7.2 Technology Level 4.

Link to IBM Redbook

Expert Content

SAP Kernel 789 on AIX available with S/4HANA 2022

With the release of S/4HANA 2022, the Application Server on AIX with kernel 7.89 has also become available. Kernel 789 is exploiting AIX 64K memory page sizes without any further configuration (see SAP Note 3231842 for more details). In previous kernels, 64K exploitation required a manual change in SAP profiles (SAP Note 1387644). Depending on the workload, the usage of 64K memory pages can lead to measurable performance improvements.

1780629 - AIX: Minimal OS Requirements for SAP Kernel3231842 - AIX kernel 789 with 64K page size default1387644 - Using 64 KB Virtual Memory Pages Sizes on AIX

How to properly size paging space and physical memory

When your AIX server runs into low memory or low paging space situations this can lead to an outage of your SAP system. Therefore you should try hard to avoid these scenarios. The recently updated SAP Note 1121904 will help you to properly configure both memory and paging space.

SAP Note 1121904 - SAP on AIX: Paging space and physical memory resources

How to avoid out of memory situations

Running out of virtual memory on your SAP application server is something you definitely want to avoid. Check out this new SAP note which contains valuable hints and tips and best practices how to accomplish this. Learn about the SAP Host Agent metric OS.PercentPSBelowSigdanger which allows you to set an alert before your application server runs into problems.

SAP Note 2630086 - Avoid signal 33, out of memory on AIX