Method, system and computer program for executing hot migrate operation using migration plug-ins

A system for executing a hot migrate operation, comprising:

• control means for executing a hot migrate operation from a first version of a service using a first data model, to a second version of the service using a second data model that is modified with respect to said first data model;
• installing means for installing at least one second version client application, for installing a second version data manager operating according to said second version data model, and for installing a second version data repository arranged according to said second data model and cooperating with said second version data manager;
• and
• roll-over control means for converting in successive steps data from a first version data repository associated with the first version of the service to said second version data repository until all data are converted,
• wherein the roll-over control means includes a first migration plug-in coupled to the second version data manager, for accessing data in the first version data repository, and
• wherein the first version of the service is controlled to retrieve data from the first version data repository, but if unsuccessful, to retrieve and convert data from the second version data repository without storing the data in the first version data repository, where said conversion takes place using a second migration plug-in coupled to a first data manager associated with the first version of the service.

A computer program product embodied on a computer-readable recording medium, for executing a hot migrate operation from a first version of a service using a first data model, to a second version of the service using a second data model that is modified with respect to the first data model, the service comprising a client application, a data manager and a data repository, said computer program product comprising computer-executable instructions for:

• installing at least one second version client application;
• installing a second version data manager operating according to the second data model;
• and
• installing a second version data repository arranged according to the second data model and cooperating with the second version data manager,
• wherein the second version data manager is provided with a first migration plug-in and in that an incremental roll-over process is effectuated,
• wherein in successive steps, data is converted from a first version data repository associated with the first version of the service to said second version data repository by the first migration plug-in until all data are converted and thereafter, a first version client application associated with the first version of the service becomes removable, and
• wherein the first version of the service is controlled to retrieve data from the first version data repository, but if unsuccessful, to retrieve and convert data from the second version data repository without storing the data in the first version data repository, where said conversion takes place using a second migration plug-in coupled to a first data manager associated with the first version of the service.

A computer program product embodied on a computer-readable recording medium, for executing a hot migrate operation from a first version of a service using a first data model, to a second version of the service using a second data model that is modified with respect to the first data model, the service comprising a client application, a data manager and a data repository, said computer program product comprising computer-executable instructions for:

• installing at least one second version client application;
• installing a second version data manager operating according to the second data model;
• and
• installing a second version data repository arranged according to the second data model and cooperating with the second version data manager,
• wherein the second version data manager is provided with a first migration plug-in and in that an incremental roll-over process is effectuated,
• wherein in successive steps, data is converted from a first version data repository associated with the first version of the service to said second version data repository by the first migration plug-in until all data are converted and thereafter, a first version client application associated with the first version of the service becomes removable, and
• wherein the incremental roll-over process is terminated when all data are migrated to the second version data repository, and thereafter the first migration plug-in is replaced by a null stub.