SYS1.PARMLIB(IVTPRMxx)

IVTPRMxx sets parameters for the Communication Storage Manager (CSM), and is described in the MVS Initialization and Tuning Reference (SA22-7592). The following directives are known to impact z/OS® Explorer:

FIXED MAX(maxfix)

Defines the maximum amount of storage dedicated to fixed CSM buffers.

Value Range:  maxfix is a value from 1024K to 2048M.
Default: 100M

ECSA MAX(maxecsa)

Defines the maximum amount of storage dedicated to ECSA CSM buffers.

Value Range:  maxecsa is a value from 1024K to 2048M.
Default: 100M