https://www.ibm.com/docs/en/db2-for-zos/13.0.0?topic=sharing-resolution-transaction-manager-indoubt-units-recovery
A global transaction is a unit of work that involves operations on Db2. All of the operations that comprise a global transaction are managed by a transaction...
data sharingtransaction managerresolutionunits
https://docs.oracle.com/en/database/oracle/transaction-manager-for-microservices/24.2/books.html
List of books or guides that provide documentation to install, configure, and manage Transaction Manager for Microservices.
transaction manageroraclemicroservicesbooks