The best way to not mess around with usernames an password is to use the userstore. Tell your sap admins or HANA database admins to preconfigure the userstore for you and name the user same on each system. SAP recommends to name it MONITOR like the role the user needs at database level.
Important, if the HANA system is a failover cluster (replications cluster) the cluster connection need to be defined in the user store and also on all nodes (applies for scale-out-systems too).
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