By placing load module data sets in the link pack area (LPA) and system link list, you can obtain improved MVS™ system performance and some virtual storage savings.
You can place only one set of WebSphere® Application Server for z/OS® load modules (any release) in the link pack area and link list because the same load module names are used across releases. For each application serving environment, the Customization Dialog or Profile Management tool is used to specify whether the environment's product data sets are already in the link pack area and link list or require loading from STEPLIB.
If load modules for a previous version of WebSphere Application Server for z/OS are in the system link pack area and link list, you must run the new version of WebSphere Application Server for z/OS from STEPLIB. If no previous version is in the system link pack area and link list, then you can choose a set of WebSphere Application Server for z/OS product libraries and place them in the link pack area and link list.
If these data sets are not in the link list, be sure to follow the optional customization steps that direct you to add these data sets to STEPLIB concatenations in WebSphere Application Server JCL, and in the setupCmdLine.sh script. Certain Language Environment® load modules can be placed in the link pack area, providing performance improvements. For more information see the Language Environment® Customization manual for your z/OS release.
Each WebSphere Application Server for z/OS node home directory uses a setupCmdLine.sh shell script to set environment variables during the execution of administrative scripts. One of the functions of this shell script is to set the STEPLIB variable, which provides STEPLIB capability when running a file system executable file.
STEPLIB='WAS.V60.TEST.SBBOLD2':$STEPLIB STEPLIB='WAS.V60.TEST.SBBOLOAD':$STEPLIB export STEPLIBEdit the lines as needed, however, don't remove lines requiring variable input. Be sure to update each node's setupCmdLine.sh script, including the one for the deployment manager.