Summary
In this chapter, we have examined most of the components that make up the DB2 environment. The operating systems for DB2 on the S/390 and z-series enterprise servers are based on the core operating system of MVS. The current operating systems are OS/390 and z/OS. Within this structure, there are several address spaces that make up the environment, which really is a horizontal memory expansion, with each address spaces allocated certain functions. The main components of DB2, and all its managers are in the DBAS and SSAS. The IRLM communicates with DB2 and provides the internal lock manager.
Across the environment there are security services, as a total umbrella to provide many levels of security. The highest level is the component called ...
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