Abstract: A system and method for execution plan preparation. One or more processors executing an application process of an application server receive a request from a client computer over a network. The one or more processors parse the request to determine one or more components of the request. An execution plan for the request is generated based on the one or more components determined by the parsing, and the execution plan is then sent to a database for execution of the request by a database process.

Abstract: One or more dynamic logon group parameters can be retrieved. The dynamic logon group parameters can be associated with an originator of requests for server processing by a computing system that includes a plurality of server instances, can be established prior to runtime, and can include an abstract definition of server instance characteristics required or preferred for handling the requests from the originator without designating specific server instances for handling the requests from the originator. One or more server instances can be selected from the plurality of server instances such that the one or more selected server instances satisfy the abstract definition of server instance characteristics. At runtime, the one or more selected server instances can be assigned to respond to the requests from the originator. Related articles of manufacture, systems, and methods are described.

Abstract: According to one general aspect, a method for managing a plurality of different tenants on a shared computing infrastructure including at least one application server apparatus may include associating a tenant with a plurality of services, wherein each service provides a set of actions that the service is configured to perform. In some embodiments, the method may include associating at least one tenant runlevel for each associated service with the tenant. In various embodiments, the method may include, when the application server apparatus executes a service for the tenant, determining the tenant runlevel associated with the tenant, and managing the set of actions configured to be performed by the service based at least in part upon the tenant runlevel associated with the tenant and the service.