International Business Machines Corporation

Ming Qiao Shang Guan

Hui Wang

Wei Song

Ying-Chen Yu

Xin Dong

Jia Wei Zhou

Kai Yao Cao

Cheng Fang Wang

Mai Zeng

Xing Jun Zhou

Jing Chen

Yu Mei Dai

Zhao Wang

In computer methods and systems for operating a database management system using a catalog table collection module each table in the database management system is cataloged. Multiple tables are automatically dispatched into multiple consistency groups by collecting real-time statistics using a real time statistics module. Workload profile data of the database management system is generated using a workload profile collection module, and an optimized multiple consistency group definition for the database management system is generated using a transaction splitting analysis module.

Automatic dispatch of multiple tables into consistency groups within an active-active solution

Embodiments of the invention are directed to data replication in an active-active databases having a source site and a target site. Aspects include creating a subscription activation message in a capture address space, the subscription activation message having a timestamp after a latest committed timestamp of the active-active databases and transmitting the subscription activation message to a subscription activation module of the target site of the active-active databases. Based on a determination that one or more tables associated with the subscription activation message are inactive, aspects also include repairing the one or more tables. Based on a determination that all tables associated with the subscription activation message are active, aspects include initiate replication of the capture address space from the source site to the target site with a timestamp of the latest committed timestamp.

Data replication in an active-active databases

Disclosed are techniques for migrating the execution of a task from a first host system to a second host system by copying a snapshot of data required for starting the execution of a task from memory of the first host system to memory of a coupling facility, monitoring the execution of the task on the first host system, and, upon detecting failure of the execution of the task on the first host system, initiating execution of the task on the second host system by copying the snapshot of data from the memory of the coupling facility to the memory of the second host system.

Operating cluster computer system with coupling facility

In various embodiments, a computer-implemented method includes identifying data files in external storage, where the data files correspond to a computer software application (application) on a mobile device. The method may also include sorting the one or more data files into different access levels. The method may also include predicting the sorted one or more data files that will be accessed on the mobile device using a prediction engine. The method may also include locating the predicted one or more data files in the external storage using a migration map. The method may also include determining whether the predicted one or more data files were previously migrated to the external storage from the mobile device. The method may also include migrating the predicted one or more data files from the external storage to the mobile device.

Data migration for applications on a mobile device

In various embodiments, a computer-implemented method includes identifying data files in external storage, where the data files correspond to a computer software application (application) on a mobile device and where the data files were previously stored on the mobile device. The method may also include sorting the data files into different access levels, where the access levels designate a hierarchy for the data files. The method may also include predicting the sorted data files that will be accessed on the mobile device using a prediction engine. The method may also include locating, in response to the predicting, the predicted data files in the external storage. The method may also include migrating the predicted data files from the external storage to the mobile device, where the migrating is done in order of the access levels.

In various embodiments, a computer-implemented method includes identifying computer software applications (applications) on a mobile device. The method may also include generating migration profiles for the applications, where each application corresponds (corresponding application) to a migration profile and where the migration profile includes data files about the corresponding application. The method may also include monitoring storage space of the applications on the mobile device, where the monitoring includes identifying data files of the applications. The method may also include calculating an amount of storage space to determine whether there is a shortage of storage space for the data files. The method may also include, in response to calculating that there is a shortage of storage space, determining when the data files will be migrated. The method may also include, in response to determining when the data files will be migrated, migrating the data files to external storage.

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Beijing, China

Ming Qiao Shang Guan