When running ZDU, during the first step, load the new DB scheme, the following error occurred:
"U00038290 Zero Downtime Upgrade is not possible between version 12 and 12.1 when using split DB schema."
Base version is 12.3.x
This is caused by pointing to the same database for the [ODBC] section and the [MQDB] section.
Release : 12.3
Component : AUTOMATION ENGINE
; sqlDriverConnect: Connection String for the database which holds the Message Queue Tables.
; Same format as the connection string (SQLDRIVERCONNECT=) in ODBC Section but applicable for MSSQL Databases only.
; For database software from other vendors it does not make sense to separate the MQ tables into a dedicated database.
Now you should be able to run the load for the ZDU.
If there ARE synonyms like dbo.MQ1CP001, then:
The load log file ending in 00.txt
The load trace file ending in 00.txt
The screenshot from step 2 above