Abstract: A method, system, and program storage device for creating a new user account or user group with a unique identification number in a computing environment having multiple user registries is provided. In response to receiving a command to create a new user account or user group, an operating system of a clustered computing environment automatically checks multiple registries configured for the operating system to determine whether a candidate identification number for the new user account or user group has been assigned already to one or more existing user accounts or groups, respectively. The operating system automatically assigns the candidate identification number to the new user account or user group created in a target user registry if the checking indicates that the candidate identification number has not been assigned already to any of the existing user accounts or user groups, respectively.

Abstract: A system cluster, a method and a recording medium are provided in which an administering host system of a cluster maintains global information for globally managing the availability of services to users on a basis of the system cluster. Individual host systems also maintain local information, the local information being usable for locally managing the availability of services or resources to users of those host systems. Thus, the availability of services to users of the cluster is managed locally for some users via referring to the local information at the host system to which the user makes a request. For other users, the availability of services is managed via referring to the global information. A table is maintained at each of the host systems which indicates for each user defined to the cluster whether the services available to the particular user are managed globally or locally.

Abstract: A method, system, and computer program product for managing database records with attributes located in multiple registries are disclosed. A data processing system identifies one or more attributes of a record to be accessed from one or more of a plurality of distributed databases, wherein a first attribute among the one or more attributes resides in an unknown database among the plurality of databases and it is known that a second attribute resides in a particular database among the plurality of databases. The data processing system forms a query, which includes a request for the first attribute and a request for the second attribute, and sends the query to the particular database. The data processing system receives a positive response to the query indicating that the particular database contains the first attribute for the record, and in response to receiving the positive response, the data processing system stores an identifier of the particular database in association with the first attribute.