MRCNEW Memory Based Planner Errors App-Mrp-22086 But Not A Memory Issue (Doc ID 871232.1)

Symptoms

On 11.5.10.2 in Production:
When attempting to run a Supply Chain MRP plan the following error occurs in MRCNEW - Memory Based Planner.

APP-MRP-22086: mradfpalloc: Cannot allocate memory for fpalloc

Cause: The current routine cannot allocate memory for the specified entity.

Action: Contact your customer support representative.

gthsk1=243859
gthsk2=7
gthsk3=19
gthsk4=48
gthsk5=3
gthsk6=3
Total memory usage: 2097120
Freeing calendar memory
Freeing memory for type 1 and org 105
Freeing memory for type 2 and org 0
Freeing memory for type 3 and org 103
Freeing memory for 103 Period type:1
Freeing memory for type 1 and org 103
Freeing memory for 104 Period type:1
Freeing memory for type 1 and org 104
Freeing memory for 106 Period type:1
Freeing memory for type 1 and org 106
Freeing memory for 107 Period type:1
Freeing memory for type 1 and org 107

Important:  Total memory usage: 2097120 - This shows the total memory useage of the plan in kbytes so this is about 2 Gig.  This is the limitation for data memory for regular MRP/Supply Chain Planning.  However in this case there were no new organizations or significant amounts of data added to the plan and previously this same plan completed with Total memory usage: 350702 which is about 350 Meg before it started to fail.  So it's clear that there's some type of data problem in the plan.   It's critical that support see the previous completed plan log file, for MRCNEW - Memory Based Planner - for the last successful run so that we can check on the memory useage and investigate appropriately.

STEPS
The issue can be reproduced at will with the following steps:
1. Run the MRP Supply Chain Plan
2. Plan fails with 2 gig limitation in MRCNEW
3. The day before it failed it only took 350 Meg

Changes

Cause

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