ORA-44829
Cannot use global service "string" as a parent service
Cause
An attempt is made to use a global service as a parent service. At this time, global services cannot have child services.
Action
Use a parent service that is not a global service. Issue "select name, global_service from dba_services;" to find all of the non-global services on the system. The global_service column will contain 'NO' for non-global services.