DMGDYNAL S0C4 U0000 PSW VDSINTRP+000E6C00

Products

• Allocate DASD Space and Placement

Issue/Introduction

When a z/os dynamic I/O change is in progress, and CA Allocate is in its  volume selection function for an allocation, there is a rare chance of an
 abend S0C4.
  SYMPTOMS:
 IEA995I SYMPTOM DUMP OUTPUT
 SYSTEM COMPLETION CODE=0C4  REASON CODE=00000004
 DATA AT PSW  xxxxxxxx - D2037000  40004177  00044144

Environment

Release:
Component: ALLOC

Resolution

ST03707 test apar has been written for this new defect. 
CIRCUMVENTION:
Quiesce the z/os system before implementing the dynamic I/O change.