SAP on Db2 for z/OS

Find resources – including blogs, questions and answers, and resources for administering your Db2 for z/OS database with an SAP system.

Featured Content

SAP on IBM Z Reference Architectures

New versions of the SAP on IBM Z Reference Architectures are available. Download the PDFs and get the latest updates about SAP's maintenance strategy until 2030, the tight integration of ABAP & cloud services and various technology enhancements (e.g. IBM z15, DS8900F, IBM Z System Recovery Boost & SAP Cloud Platform).

SAP Business Suite on IBM ZSAP Banking on IBM ZSAP Insurance on IBM Z

SAP on IBM Z quarterly Webcast Series - March 25th, 2021 - Replay available

Topic: Invoke Db2 procedures by SQL/PL Triggers Time: March 25th, 4:00 p.m. CET (60 minutes) Speakers: Peter Becker (IBM)

Registration LinkReplay

Release of Windows 2019, RHEL 8 and SLES 15

SAP has successfully finished the certification of SAP application servers with Windows 2019, SLES 15 and RHEL 8 in combination with Db2 for z/OS. Please note that the new OS versions require Db2 Connect 11.5. More details are available in SAP Note 2919991.

SAP Note 2919991

Business Continuity for SAP on IBM Z, Edition 2020 available

This edition is based on IBM System Automation for z/OS 4.1 with APAR level OA54684 and on IBM System Automation for z/OS 4.2 with APAR level OA58750. It includes support of Red Hat Enterprise Linux for IBM Power System Big Endian and Little Endian as application server platform and new System Automation 4.1 functions (suspend and resume).

Business Continuity for SAP on IBM Z, Edition 2020

Expert Content

UPDATED: TLS Certificate Authentication for SAP on IBM Z

An update of the best practice guide covering TLS Certificate Authentication is available with the following updates: - Added a new section about secondary connections - Verified that Software Update Manager ran properly - Included customer feedback about disabling login with password or passphrase in z/OS - Inserted guidance for cryptographic hardware configuration - Fixed information related to environment variable dbs_db2_user - Improved description of TLS certificates

TLS Certificate Authentication for SAP Application Server Connections to Db2 on IBM Z


A revised and updated version 14 of the CLI Failover presentation is available. Major updates are: - DBA Cockpit does no longer support re-loads of the db2dsdriver.cfg - Added page ‘Recommended Planned Failover trigger’ - New User Interface of latest Failover Configuration Tools version included - Other updates and improvements

Download the PDF


SAP has successfully certified the usage of APPLCOMPAT=V12R1M506 and APPLCOMPAT=V12R1M508. For the time being the following SQL features are exploited: LISTAGG built-in function (FL501), explicit casting of numeric values to GRAPHIC or VARGRAPHIC (FL502), implicit drop of explicitly created database objects (FL506) & separation of multi-table segmented tablespace (FL508). Raising APPLCOMPAT to V12R1M506 or V12R1M508 is optional for customers. SAP applications will always check the APPLCOMPAT level before using any new SQL features.

SAP Note 2902423Db2 12 Function Levels

SMD Agent on z/OS - Cut up to 80% of the CPU Consumption

On z/OS the CPU consumption of Solution Manager Diagnostics (SMD) Agents can be very high if there are many (real and virtual) network interfaces. This is because there is one agent (Java process) for each network interface. A detailed study revealed that a huge part of the CPU utilization is triggered by explicit garbage collection calls which are superfluous with today's Java Virtual Machines. Fortunately, these calls can be deactivated without any code change by a simple adjustment of the SMD Agents' profile.

Note 2998723 - SMD Agent on z/OS: up to 80% CPU reduction by deactivating garbage collection

Migrating SAP Systems to Db2 12 for z/OS

IBM support of Db2 11 for z/OS has been extended to March 2021. Nevertheless, it is high time that you start moving your SAP landscape on IBM Z to Db2 12 for z/OS if you have not yet done so. A revised version of the best practice guide “Migrating SAP Systems to Db2 12 for z/OS” is available since 18Sep2020 with updates in the following areas: Handling of APPLCOMPAT level, Online/offline Db2 12 migration procedure (ABAP & J2EE stack) & Online/offline BIND/REBIND of Db2 Connect packages (CLI & JDBC)

Best Practice Guide Migrating SAP Systems to Db2 12Webcast (folder: Q4 -December12- 2019 RadioSAP: Migrating SAP to Db2 12 - revisited)Note 2302997 - Release of Db2 12 for SAP ComponentsNote 2303029 - Migration to DB2 12Note 2902423 - Support of APPLCOMPAT=V12R1M506

Huffman Compression

IBM's current Z processor family supports enhanced data compression using Huffman encoding. The SAP on IBM Z performance team located in Poughkeepsie just finished a first study using banking workloads to assess the effects of the new technology on disk space, performance and throughput.

Performance Evaluation of Huffman Compression with SAP Banking on IBM Z