WebSphere Application Server V7.0: Concepts ... - IBM Redbooks

14.8.1 Installation overview
To install a WebSphere Application Server for z/OS V7.0 on z/OS there are three
major steps to be performed:
1. System preparation
2. Product code installation with System Modification Program/Extended
(SMP/E)
3. Product configuration, including the profile creation, using Job Control
Language (JCL)
14.8.2 Installation considerations
This section includes general considerations when installing a WebSphere
Application Server for z/OS V7.0.
General environment considerations
Planing your environment is critical, so a dedicated chapter is introduced in this
book. See Chapter 4, “Infrastructure” on page 93.
Naming convention
When installing WebSphere Application Server for z/OS V7.0, make sure you
use a good naming convention. The operating system restriction to eight
characters limits your naming convention to the usage of abbreviations. Keep in
mind that there are new components introduced in WebSphere Application
Server for z/OS V7.0 (for example the administrative agent and job manager).
Make sure that your convention reflect this information as well.
Note: The naming convention guidelines from the Washington System center
are included in the configuration tool for the profile creation.
Real memory defined
Keep in mind that the WebSphere Application Server for z/OS has a different
blueprint than WebSphere Application Server for distributed environments. See
14.1.4, “Structure of an application server” on page 422 for more details.
Because there are multiple heaps, one for every controller and servant region,
this results in different memory requirements.
It is absolutely critical that the heaps defined in a WebSphere Application Server
environment fit into real memory. The impact of not having the heap in the real
memory would be a negative performance impact due to paging during each
Chapter 14. WebSphere Application Server for z/OS 457