Oracle International Corporation

Voltdb, Inc.

Manju James

Anand Madihalli Srinivasan

Alexandre De Castro Alves

Kenneth R Traub

Marina Yurievna Popova

Walter Weiss

Ning Shi

Yang Lu

Rui Shen

Database replication is performed by tracking sequence numbers associated with binary change logs. At a producer cluster, a binary change log is generated based on a write transaction made to a database partition in the producer cluster. Included with the binary change log is a sequence number corresponding to the write transaction. The binary change log is transmitted from the producer cluster to a consumer cluster, where a determination is made whether to apply the binary change log based on the included sequence number. The binary change log is then applied to a database partition in the consumer cluster. The sequence number is stored at the consumer cluster by combining the sequence number with a numerical range having a first number and a second number, where the second number has a value corresponding to the most recent binary change log applied to the database partition in the consumer cluster.

High-performance database replication systems and methods

The concept of faults and fault handling are added to the execution of continuous event processing (CEP) queries. By introducing fault handling techniques to the processing of CEP queries, users are enabled to instruct a CEP query processor to respond to faults in a customized manner that does not necessarily involve the halting of the CEP query relative to which the faults occurred. For example, a fault might be due to a temporary problem. Under such circumstances, the CEP query processor can be instructed to ignore the fault and allow the execution of the CEP query to continue relative to the remainder of the event stream. Alternatively, if the fault is due to a problem with the CEP query itself, then the CEP query processor can be instructed to propagate the fault through the query processing system until the fault ultimately causes the problematic CEP query to be halted.

Handling faults in a continuous event processing (CEP) system

An EPC provisioning system comprising an EPC server can dynamically provide EPC code blocks for one product to multiple client sites. The EPC server can use business rules to determine the EPC codes for the multiple client sites.

EPC provisioning system

An EPC provisioning system comprising a EPC server can dynamically provide EPC code blocks for one product to multiple client sites. The EPC server can use business rules to determine the EPC codes for the multiple client sites.

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Lexington, MA, United States of America

Manju James