Solution : https://service.sap.com/sap/support/notes/440954 (SAP Service marketplace login required)
Summary : 
      SAP Note addresses the installation of several SAP systems within the same DB2 subsystem on MVS or OS390 platforms, incorporating key components such as CCMS and MCOD management features. It details necessary transports from note 101217 and collective transports for various R/3 releases to ensure correct system operation. Key operational functionalities including DB2 subsystem notifications via RSDB2_COLLECT_HOURLY, management of DB02 page set specifications, and backup procedures via DB13/DB13C are discussed. Steps to handle potential conflicts in backups, ensuring unique naming for page copies, and managing utility IDs for system integrity are also included. The proper setup and alert management in ICLI configurations are highlighted.
Key words : 
transaction db02 displays size/quantity specifications, additional key words ccms, db2 utility ids prevents, announcean sap system manually, calling transaction db2j, transaction db13/db13c, prerequisites - solution ensure, refreshed generation routine, called sy00x<ccc>, arbitrarily generated characters
Related Notes : 
       
| 399419 | DB2/390: MCOD installation | 
| 101217 | DB2 z/OS: Overview of transports and corrections | 
| 13719 | Preliminary transports to customers (note for customers) |