z/OS UNIX System Services Planning
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MAXTHREADTASKS

z/OS UNIX System Services Planning
GA32-0884-00

MAXTHREADTASKS is the maximum number of MVS™ tasks that a single process can have concurrently active.

A high MAXTHREADTASKS value might affect storage and performance. Each task requires additional storage for the following:
  • The control blocks built by the kernel
  • The control blocks and data areas required by the Run-Time Library
  • System control blocks such as the TCB and RB
You can set a system-wide limit in BPXPRMxx, and then set higher limits for individual users by using the RACF® ADDUSER or ALTUSER command to specify the THREADSMAX limits on a per-user basis, as follows:
ALTUSER userid OMVS(THREADSMAX(nnnn))

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