Eliezer Levy

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ion of an SAP system (CI: central instance; DI: dialog instance). 4 : 4 B. ROCHWERGER ET AL. IBM J. RES. & DEV. VOL. 53 NO. 4 PAPER 4 2009 service applications based on a formal contract that specifies the infrastructure SLAs. The same contract should be reused to provision multiple instances of the same application for different tenants with different(More)
A major disadvantage of the two-phase commit might be severe. At each site, and for each transaction (2 PC) protocol is the potential unbounded delay that transactions may have to endure if certain failures occur. By using compensating transactions, we obtain a revised 2PC protocol that overcomes these difficulties. In the revised protocol, locks are(More)
In traditional database management systems, recovery activities, like checkpointing and restart, are performed in a quiescent state where no transactions are active. This approach impairs the performance of on-line transaction processing systems. Recovery related overhead is particularly troublesome in an environment where a large volatile memory is used.(More)
Compensating transactions are intended to handle situations where it is required to undo either committed or uncommitted transactions that affect other transactions, without resorting to cascading aborts. This stands in sharp contrast to the standard approach to transaction recovery where cascading aborts are avoided by requiring transactions to read only(More)
Supporting atomicity of multi-site transactions in a distributed transaction management system is equated with long-duration delays, blocking, and loss of autonomy of the individual sites. The two-phase Commit protocol embodies these problems. The focus of this paper is on an alternative notion of relaxed atomicity where these difficult ies are alleviated.(More)
This paper presents current research in the design and integration of advance systems, service and management technologies into a new generation of Service Infrastructure for Future Internet of Services, which includes Service Clouds Computing. These developments are part of the FP7 RESERVOIR project and represent a creative mixture of service and network(More)