Datacom MUF gets DB01004E - PXX AREA I/O ERROR at shutdown

Products

• Datacom
• DATACOM - AD
• CIS
• COMMON SERVICES FOR Z/OS
• 90S SERVICES
• DATABASE MANAGEMENT SOLUTIONS FOR DB2 FOR Z/OS
• COMMON PRODUCT SERVICES COMPONENT
• Common Services
• CA ECOMETER SERVER COMPONENT FOC
• Easytrieve Report Generator for Common Services
• INFOCAI MAINTENANCE
• IPC
• UNICENTER JCLCHECK COMMON COMPONENT
• Mainframe VM Product Manager
• CHORUS SOFTWARE MANAGER
• CA ON DEMAND PORTAL
• CA Service Desk Manager - Unified Self Service
• PAM CLIENT FOR LINUX ON MAINFRAME
• MAINFRAME CONNECTOR FOR LINUX ON MAINFRAME
• GRAPHICAL MANAGEMENT INTERFACE
• WEB ADMINISTRATOR FOR TOP SECRET
• Xpertware

Issue/Introduction

CA Datacom Multi User Facility (MUF) region is correctly shut down and the DBMUFPR step returns RC 0 but a SNAP dump (ID=20) is generated on the MUF joblog while the following messages can be found on the JESMSGLG:
DB01004E - PXX AREA I/O ERROR  
DB01001W - PXX AREA FULL       
DB00202I - MULTI-USER DISABLED 

Environment

CA Datacom/DB or CA Datacom/AD 14.0 and above

Cause

The errors are returned because the PXX dataset is shared with another MUF region (a member of the same MUFPLEX, a shadow MUF or a completely different one) 

Resolution

Each region must have its own PXX and this dataset cannot be shared with any other Datacom MUF region.
This requirement is clearly stated on KB000025223 for Primary/Shadow configuration.