IRA401E

Explanation
The system detected a critical shortage of pageable
processor storage frames.
In the message text: return-code
The return-code indicates the type of the detected
shortage. The order in the list below indicates how severe the shortage
is. The most severe type is at the top of the list. The possible values
for return-code are as follows: 03
Pageable frames below 16 megabytes shortage
04
Pageable frames between 16 megabytes and 2 gigabytes shortage
02
Pageable frames in real storage shortage
01
Pageable to auxilary (PTA) frames in processor storage shortage
because of too many DREF and fixed frames.

System action
The system rejects LOGON, MOUNT, and START commands.
and keeps initiators selecting new jobs from running until the shortage
is relieved. The system swaps out the current in-storage address space
with the greatest number of fixed frames. The address space remains
swapped out until the shortage is relieved.
The system writes
message IRA403E to identify the heavy fixed page user.

System programmer response
  Examine users of V=R storage and
other jobs that have heavy page fix requirements for possible looping
or for extraordinary page fix needs.  Correct any errors.

Source
System resources manager (SRM)

Module
IRASTFXS

Routing code
2

Descriptor code
11