Sap Ag

Sap Se

Ralf Kuersch

Dietmar Theobald

Juergen Schneider

Andrea Neufeld

Thomas Raupp

Christian Fecht

Georg C Becker

Nikolai Tankov

Dirk Debertin

Tobias Wenner

Rainer Schweigkoffer

Thomas Walter

Juergen Kissner

Peter H Peshev

In one embodiment the present invention includes a system for transaction recovery in a distributed computing environment. The system includes a transaction log server, application servers, and resource servers. The transaction log server stores a shared transaction log. The application servers implement a distributed transaction application and accesses the shared transaction log when performing a transaction using the distributed transaction application. The resource servers store data and that operate with the application servers to access the data according to the transaction. If one of the application servers fails, another application server assumes responsibility for a portion of the shared transaction log that was previously accessed by the failed application server.

Distributed transactional recovery system and method

A database access interceptor includes a statement pool and a table buffer. The statement pool and the table buffer are associated with physical database connections. The interceptor may include a separate instance of the statement pool for each physical database connection. Similarly the interceptor may include a separate instance of the table buffer for each physical database connection.

System and method for a database access statement interceptor

Embodiments of the invention are generally directed to a system and method for optimizing transaction termination. A database interface receives an indication to terminate a transaction. The database interface decides whether to send a command to the underlying database server to terminate the transaction. If the database interface does send a command to the database server, it determines which command is appropriate to send.

System and method for optimizing database transaction termination

A node may contain a secure store agent. A process executing on the node may request connection information from the secure store agent. An encryption key phrase may be accessed, responsive to the request for connection information, to decrypt the requested connection information. The requested connection information may be obtained from a secure storage file in a file system.

Secure storage in file system

Secure storage in a file system

A system and method for deferred database connection configuration. A database connection handle associated with a physical database connection is assigned to an application. An indication is received from the application to access a specified connection parameter of the physical database connection. A connection handling infrastructure determines whether the specified connection parameter is one of a selected subset of connection parameters. Access to the specified connection parameter is deferred, if the specified connection parameter is one of the selected subset of connection parameters.

System and method for deferred database connection configuration

A system and method for synchronizing distributed table buffers is disclosed. A node may contain a synch manager and a table buffer having a synch identifier. The synch manager may use the synch identifier to coordinate updates to the table buffer. The updates to the table buffer may be performed in an asynchronous and/or a synchronous manner.

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Sandhausen, Germany

Ralf Kuersch