Cause
When blockchain tables are used in a distributed transaction, it is not possible to have multiple child branches accessing the same pluggable database.
Action
Use one branch for each pluggable database.
Error Message
Multiple child branches for the same pluggable database are not allowed in a distributed transaction involving blockchain tables.
When blockchain tables are used in a distributed transaction, it is not possible to have multiple child branches accessing the same pluggable database.
Use one branch for each pluggable database.