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Figure 2-4 demonstrates the architecture of a typical SAP system using DB2 for z/OS.
SAP Instance
AIX, Linux on System x, Windows
SAP NetWeaver
Application Server
ABAP Java
DB2 Client
TCP/IP LAN
z/OS
WLM
DS8000 Flash
Copy
Figure 2-4 Typical setup for deploying an SAP system with DB2 for z/OS
2.2.4 z/OS workload management
SAP Central
Services
DB2
Data Sharing
Linux on System z
SAP NetWeaver
Application Server
ABAP
ABAP Java
DB2 Client
Client
HiperSockets
One of the strengths of the System z platform and the z/OS operating system is the ability to
run multiple workloads at the same time within one z/OS image or across multiple images.
These workloads often have different, competing resource requirements that must be
balanced to make the best use of the resources and to achieve the highest possible
throughput and consistent system responsiveness.
Dynamic workload management, which is implemented in the workload management
component of the z/OS operating system, makes this function possible. Workload
management dynamically ensures that the most important work is handled first and that
applications are given the capacity they need, in line with a customer’s priority list of critical
workloads. This dynamic resource management goes across clustered logical partitions
(LPARs), allowing management of processor capacity, prioritization of I/Os, and activation of
newly installed resources.
The system is constantly monitored and, if and when required, the processing is adapted to
meet the defined goals. Because of these characteristics, workload management plays an
important role in energy and space efficiency.
Workload management helps to ensure that SAP applications can be managed optimally in
accordance with business goals, and provides adequate response times and throughput for
16 Running SAP Solutions with IBM DB2 10 for z/OS on the IBM zEnterprise System
LPAR 1 S Y S P L E X LPAR 2
Analytics
SAP NW BW, others ...