International Business Machines Corporation

Franco Mossotto

Arcangelo Di Balsamo

Sandro Piccinini

Giuseppe Longobardi

Eliana Cerasaro

Riccardo Pizzutilo

Alessandro Scotti

Francesca Liliana Pasceri

Flora Tramontano Guerritore

Luigi Presti

Domenico Agostinacchio

Francesca Curzi

Fabio Barillari

Pietro Iannucci

Luca Landi

Ugo Madama

Vincenzo Spinelli

Liliana Francesca Pasceri

Stefano Ferrari

A method, computer system, and a computer program product for authenticating a user in a computing system is provided. A corresponding method comprises validating one or more user snapshots of the user that should have been acquired in corresponding acquisition conditions according to their match with the corresponding acquisition conditions; the user snapshots are then sent (at least in part) to one or more authenticators requesting them to identify the user. A computer program and a computer program product for performing the method are also proposed. Moreover, a corresponding system is proposed.

Authentication of users based on snapshots thereof taken in corresponding acquisition conditions

A method and associated system. Expected problems in a workload plan are predicted in response to any current occurrences of impacting system events according to the workload plan and corresponding expected impacts of the impacting system events of system events on execution of impacted work units of work units. Predicting the expected problems includes: identifying workload deadlines relating to the impacted work units in the workload plan; estimating intervention times for addressing the expected problems before missing the corresponding workload deadlines; determining corresponding minimum times required to fulfill the workload deadlines according to a progress of the workload plan; and estimating each of the intervention times further according to the minimum time of the corresponding workload deadline. An intervention program of system interventions on the computing system is established. The system interventions address the current occurrences of impacting system events according to the corresponding expected problems.

System interventions based on expected impacts of system events on scheduled work units

Expected impacts of one or more impacting system events of one or more system events on execution of one or more impacted work units of one or more work units are estimated according to (i) system event historical information indicative of previous occurrences in a computing system of the one or more system events and (ii) work unit historical information indicative of previous executions of the one or more work units. Expected problems in a workload plan are predicted in response to any current occurrences of the impacting system events according to the corresponding expected impacts and the workload plan. An intervention program of one or more system interventions on the computing system is established. The system interventions address the current occurrences of the impacting system events according to the corresponding expected problems. An indication of the intervention program for programming the system interventions accordingly is outputted.

System interventions based on expected impacts of system events on schedule work units

A method and system. System event historical information indicative of previous occurrences in a computing system of system events is retrieved. Work unit historical information indicative of previous executions of work units is retrieved. Expected impacts of impacting system events of the system events on the execution of one or more impacted work units of the work units are estimated according to the system event historical information and the work unit historical information. Expected problems in a workload plan are predicted in response to any current occurrences of the impacting system events according to the corresponding expected impacts and the workload plan An intervention program of one or more system interventions on the computing system is established, the system interventions addressing the current occurrences of the impacting system events according to the corresponding expected problems. An indication of the intervention program for programming the system interventions accordingly is outputted.

A solution is proposed for managing a multi-tenant software application adapted to serve a plurality of tenants. A deletion request is received for deleting one of the tenants from the plurality of tenants. Responsive to receiving the deletion request, an instance of the software application associated with the tenant to be deleted is disabled. The disabled instance of the software application associated with the tenant to be deleted is deleted after a protection period from the deletion request. An addition request for adding a new tenant to the software application is received. An instance of the software application for the new tenant is allocated to a selected instance of the software application.

Tenant allocation in multi-tenant software applications

A method for upgrading a database schema in real time, wherein the database schema is associated with a plurality of databases is provided. The method may include installing a first plugin on a database upgrade process associated with a database. The method may include installing a second plugin on each database instance within the plurality of databases. The method may include determining a delta associated with a final target version of the database schema. Additionally, the method may include outlining an existence of an incongruence, an existence of an override or an existence of a customization removal based on the determined delta. The method may include performing a peer-to-peer broadcasting analysis between each database. The method may include defining a migration strategy for each database instance within the plurality of databases based on the peer-to-peer broadcasting analysis. The method may further include creating a script for upgrading the database schema.

Database schema upgrade as a service

A solution for scheduling execution of jobs is proposed. In this case, a long-term plan expressed in terms of streams of jobs is created in advance (for example, for some months). An actual production plan (for a production period P(p) typically of one day) is then generated by extracting a corresponding portion of the long-term plan and expanding the streams into their jobs. In the proposed solution, a policy for the long-term plan is defined; for example, this policy specifies a minimum length L(min) and a maximum length L(max) of the long-term plan. The (remaining) length of the long-term plan is checked after each generation of the production plan; if the long-term plan is shorter than the minimum length L (min), it is expanded automatically up to the maximum length L(max).

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Rome, Italy

Franco Mossotto