International Business Machines Corporation

Andreas Uhl

Oliver Augenstein

Martin Oberhofer

Andreas Trinks

Stefan Bender

Karl Fleckenstein

Michail Tausch

Nils Haustein

Namik Hrle

Thomas Hermann Gnech

Dominic Mueller-Wicke

Eric Kass

Thomas Prause

Dale Murray McInnis

Alexander Neef

Sabine U Steinhauer

Thomas Ritter

Michael H Schlachter

Barbara Wald

Chrisopher Zaremba

A method for handling e-mail communication by an e-mail server is provided. The method includes receiving an e-mail by the e-mail server, parsing the e-mail to identify a large content item within the e-mail, generating a modified e-mail by replacing the large content item within the e-mail with an identifier, storing the large content item and the large content item forms a basis for a weblog associated with the identifier, sending the modified e-mail, and receiving a reply e-mail to the modified e-mail and the content of the reply e-mail builds an extension to the weblog.

Deduplication of e-mail content by an e-mail server

An in-memory application has a state is associated with data (C, C, C) stored in a memory and accessed by the application. A first restore point of the application is determined to represent a first time point (T) in the execution time associated with a first state at which the application accesses the data being stored in memory locations (C) using first addresses (S) and first pointers (A) which are stored in a first data structure. A first restore point identifier is assigned to the first restore point, whose value is indicative of (T). The first restore point identifier is stored in association with (A) and (S) in a first entry of a second data structure. In the first data structure, the first addresses (S) are associated to second pointers (A) to contents of memory locations (C) in the memory, and redirecting writing operations.

In-memory continuous data protection

The invention relates to a computer implemented method for creating a backup of data by a computer system. The creation of the backup comprises: assigning a first memory space in a main memory to data and loading the data into the first memory space; allocating a second memory space in the main memory for acting as container of one or more images of the data in the first memory space; creating the one or more images of the data in the first memory space; and storing the created one or more images in the second memory space and storing a respective copy of at least one of the one or more images in the one or more non-volatile storage media.

Data backup or restore using main memory and non-volatile storage media

The present invention relates to a data block based backup method for a data management system. The data management system comprises a file system that controls access by a database application to at least one database container file stored the data management system. The data management system further comprises a backup client that is connected to a remote backup server, whereby a first version of the database container file is saved in the backup server and a first inode containing information on data blocks of the first version of the database container file. The method may include creating a change tracking table for at least the database container file and adding an entry in the change tracking table, whereby the entry has an indication of the respective data block in association with an information indicating the type of the access.

Data block based backup

Embodiments for managing data in a hierarchical storage server storing data blocks of a database system comprising primary storage devices being in an active mode and secondary storage devices being in one of an active and passive mode are provided. In response to read and write requests for data blocks at logical storage locations, a block mapping device determines physical storage locations on the storage devices. Read requests switch over secondary storage devices to the active mode when they are in the passive mode. Write requests write data blocks only to the primary storage devices. Secondary storage devices that have not been accessed for a minimum activation time may be switched over from the active to the passive mode to save power consumption and cooling. Data migration and data recall policies control moving of data blocks between the primary and secondary storage devices and are primarily based on threshold values.

Hierarchical storage management for database systems

In response to read and write requests for data blocks at logical storage locations, a block mapping device determines physical storage locations on the storage devices. Read requests switch over secondary storage devices to the active mode when they are in the passive mode. Write requests write data blocks only to the primary storage devices. Secondary storage devices that have not been accessed for a minimum activation time may be switched over from the active to the passive mode to save power consumption and cooling. Data migration and data recall policies control moving of data blocks between the primary and secondary storage devices and are primarily based on threshold values.

A method and system for preventing redundant indexes in a database management system (DBMS). A received create-index command specifies a new index to be created for retrieving data from a table created by the DBMS and a redundancy check to be performed for the new index in conjunction with an action parameter in the create-index command. If the action parameter includes a REPORT value, each redundant index is stored and/or displayed and the new index is created. If the action parameter includes a PREVENT value and an existing index is redundant in view of the new index and the new index is not redundant in view of the existing index, the existing index is deleted and the new index is created. If the action parameter includes a PREVENT value and the new index is redundant in view of an existing index, the new index is not created.

Prevention of redundant indexes in a database management system

Provided are a method, system, and program for generating and indicating incremental backup copies from virtual copies of a data set. A virtual copy operation is initiated to create a virtual copy of a data set, wherein the virtual copy represents the data set at a point-in-time copy, and wherein the virtual copy is completed without transferring the data set to a backup location. An incremental backup operation is initiated with respect to an identified virtual copy, wherein the incremental backup operation copies changes to the data set that occur since a most recent creation of an incremental backup set.

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Herrenberg, Germany

Andreas Uhl