CSVLLAxx (library lookaside (LLA) list)

Use the CSVLLAxx member to specify which libraries (in addition to the LNKLST concatenation) library lookaside (LLA) is to manage. If you do not supply a CSVLLAxx member by the LLA=xx parameter of the LLA procedure on the first starting of LLA for this IPL, or if you specify a parameter of LLA=NONE, LLA will, by default, manage only the libraries that are accessed through the LNKLST concatenation. If you have started LLA successfully with a CSVLLAxx member and then stop LLA, a subsequent start of LLA will use that CSVLLAxx member unless you supply another CSVLLAxx member. If you want to get back to the default settings, specify LLA=NONE.

You can also use CSVLLAxx to specify the following:

Libraries to be added or removed from LLA management while LLA is active.
Whether LLA is to hold an enqueue for the libraries it manages.
Libraries for which LLA is to use the performance-enhancing FREEZE|NOFREEZE option.
Members of libraries, or whole libraries, to be selectively refreshed in the LLA directory.
Multiple CSVLLAxx members to be used to control LLA processing. These members can reside in data sets other than SYS1.PARMLIB. Use the PARMSUFFIX(xx) parameter to specify additional data sets. (See z/OS MVS Initialization and Tuning Guide for an example.)
Whether exit routines are to be called during LLA processing.

The operator can change these options dynamically by specifying alternative CSVLLAxx members through the MODIFY LLA,UPDATE=xx command.

In MVS/ESA 4.3 with DFSMS 1.1.0 and SMS active, you can produce a program object, an executable program unit that can be stored in a partitioned data set extended (PDSE) program library. Program objects resemble load modules in function, but have fewer restrictions and are stored in PDSE libraries instead of PDS libraries. LLA can only manage PDSE libraries containing program objects. LLA manages both load and program libraries.

For guidance information about specifying values for CSVLLAxx, see z/OS MVS Initialization and Tuning Guide.