Why is the Database Management Post Install ssid0000 compare task encountering an abend S0C4-11 on either the COMPRT or DDLCOMP steps

Products

• Database Management for DB2 for z/OS - Administration Suite
• Database Management for DB2 for z/OS - Administration Suite
• Database Management for DB2 for z/OS - Performance Suite
• Database Management for DB2 for z/OS - Recovery Suite
• Database Management for DB2 for z/OS - SQL Performance Suite
• Database Management for DB2 for z/OS - Utilities Suite
• DATABASE MANAGEMENT SOLUTIONS FOR DB2 FOR Z/OS

Issue/Introduction

The Database Management Post Install ssid0000 compare job abends on either the COMPRT or DDLCOMP steps with a
S0C4-11 NO ACTIVE MODULE FOUND NAME=UNKNOWN RCM00054: RC/Migrator module RML#MERG has abended.

Cause

The cause of the Abend S0C4-11 was due to a third party vendor's product (Performance Essentials) interfering with the Post Install ssid0000 Compare
process of opening and writing to the &&MERGE dataset as defined in the COMPRT and DDLCOMP steps.

Resolution

To circumvent this third party's process and alleviate the Abend S0C4-11 the following DD was added to the impacted steps:

//PSPOFF DD DUMMY