TPX SLOT nn BELOW THE LINE OVERFLOW on startup
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TPX SLOT nn BELOW THE LINE OVERFLOW on startup

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Article ID: 76480

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Updated On:

Products

TPX - Session Management

Issue/Introduction

SLOT nn BELOW THE LINE OVERFLOW
Reviewed TPXOPER display command D STOR.
Shows 0% Current Use and 0% Max Use with 3 Failed.  How is that possible?

From TPXOPER D STOR:


Slot   Size  * Count  =  Bytes     Curr.Use   Max.Use   Failed      Requests    01    00008   6656      53248       000 %     000 %    0           0           02    00016   4096      65536       000 %     000 %    0           1         ...   11    08192   16        131072      000 %     006 %    0           5   12    10240   0         0       000 %     000 %    3           0 ******************************** BOTTOM OF DATA ******************************



 

Environment

Release:  5.4
Component: TPX for Z/Os

Cause

TPX started task is using REGION=5000K

Resolution

Change REGION=5000K to REGION=0M in TPX Proc.  Rcycle TPX.

With REGION 5000K  not enough storage available to assign to slot 12 once TPX modules and  SMRT, PROFILEs, etc., were loaded.  
This is evident in the TPXOPER display above, with the zero value for slot 12 Count and Bytes.

In this situation, TPX continued by using Dynamic Storage Area (DSA) when otherwise slot 12 below the line would have been used.

Additional Information

TPX 5.4 - Adjust Storage Parameter ...this explains how TPX manages storage

Why does CA recommend the region size for the TPX proc be set to 0M?