International Business Machines Corporation

Francis Joseph Ricchio

Judy Y Tse

Anuradha V Vakkalagadda

Mark Walter Harbinski

Terry Lee Krein

Gregory Walter Vance

Betty J Patterson

Jeffrey G Fontaine

Karen Alicia Ranson

Shinji S Satoh

Dean Lynn Grover

Hiroaki Katahira

John Charles Barmettler

Takeshi Hoshino

Angelique Nicole Greenhaw

Takashi Ueyama

Fumitoyo Kawano

Claudia S Ho

Thanh Tien

The capturing of change data of deferred updates begins with the receipt of an update request call for one or more changes to a database. A processing of the update request call is deferred until a commit point is issued, where call information associated with the update request call is determined, and the call information is stored and associated with the update request call. During a processing of the commit point, data information for the one or more changes to the database is determined. The data information for the one or more changes is combined with the stored call information associated with the update request call.

Capturing change data of deferred updates

An apparatus and system are disclosed for communicating with multiple data stores. The present invention includes a control module that communicates with a plurality of data stores. The control module is in communication with a connection module. The connection module communicates with a first association module that is in communication with a first data store. The control module communicates with the first data store through the connection module and the first association module. In addition, the first association module communicates with a second association module. The second association module communicates with a second data store. The control module also communicates with the second data store through the connection module, the first association module, and the second association module.

Apparatus and system for communicating with multiple data stores

An apparatus, system, and method for autonomously maintaining a single system image in a parallel systems complex. A computer program product causes the relevant systems in a parallel systems complex to receive requests with a global scope from a user. The request is sent to each IMS system in the sysplex, and each IMS system applies the resource information and logs the resource information for recovery. The request is written to a shared medium which IMS sysplex members can access. When an IMS member is brought online, the IMS member restores status information first from local recovery logs. The IMS member then checks the information against the global medium to determine if requests were issued while the IMS was offline. If so, the IMS inherits the information in the global medium before processing work. An IMS added into the sysplex applies the information from the global medium before processing work.

Apparatus, system, and method for autonomously maintaining a single system image in a parallel systems complex

A system and method to automatically identify resources requiring upgrade in a hierarchical database management system. The system may include an input module to receive input identifying a single resource for upgrade. A comparator module may compare an active resource library to a staging library to identify additional resources for upgrade, and an incorporation module may incorporate the single input resource and the additional resources into an upgrade list. A generation module may then automatically derive a unit of change from this list, where the unit of change includes the single input resource as well as additional resources that interact with the input resource.

System and method for automatically identifying a unit of change requiring upgrade in a database management system

A method is disclosed for communicating with multiple data stores. The present invention includes a control module that communicates with a plurality of data stores. The control module is in communication with a connection module. The connection module communicates with a first association module that is in communication with a first data store. The control module communicates with the first data store through the connection module and the first association module. In addition, the first association module communicates with a second association module. The second association module communicates with a second data store. The control module also communicates with the second data store through the connection module, the first association module, and the second association module.

Method for communicating with multiple data stores

A method, apparatus, and article of manufacture for resolving long-busy conditions for synchronized data sets. A long-busy condition is detected in a first one of the synchronized data sets. Further access to the first data set is prevented and all subsequent accesses are directed to another, available, second one of the data sets during the long-busy condition. All updates that are made to the second data set during the long-busy condition are identified and stored in a data structure. An untimed read operation is used to determine when the long-busy condition has cleared. Once the long-busy condition is cleared, the first data set is placed into a recovery mode, wherein the identified updates are applied to the first data set. During the recovery mode, the first data set is read-inhibited to prevent read accesses thereto, but the first data set is write-enabled to allow write access thereto. Upon completion of the recovery mode, the first and second data sets are re-synchronized and normal processing can resume.

Resolving long-busy conditions for synchronized data sets

A database system having a sequential log that is shared by multiple computer systems is described. The database system receives data records generated by multiple computer systems, and stores such data records in the sequential log. The database system periodically reorganizes the data records in the sequential log such that the data records are stored in sequential physical memory locations of the sequential log by order of their creation.

Computer program product to enable multiple computer systems to share

System and method for enabling multiple computer systems to share a

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San Jose, CA, United States of America

Francis Joseph Ricchio