US Patent:
20130339964, Dec 19, 2013
Inventors:
Curt L. COTNER - Gilroy CA, US
Sherry X. GUO - Fremont CA, US
Thomas J. TOOMIRE - Morgan Hill CA, US
John E. VONAU - Brighton CO, US
Fang-Yi WANG - San Jose CA, US
Catalina Y. WEI - San Jose CA, US
Assignee:
INTERNATIONAL BUSINESS MACHINES CORPORATION - Armonk NY
International Classification:
G06F 9/46
Abstract:
The replaying of work across a database servers includes: receiving a global time by each of a plurality of replay dispatchers; calculating, for each given replay dispatcher, a time offset using a local time for the given replay dispatcher and the global time; receiving, for each given replay dispatcher, a replay workload comprising a plurality of replay records and a global replay start time, wherein each of the plurality of replay records comprises an expected wait time; calculating, for each given replay dispatcher, a wait time for each given replay record based on the expected wait time for the given replay record, the global replay start time, and the time offset for the given replay dispatcher; and submitting, for each given replay dispatcher, the replay records to a target database server for processing in an order according to the calculated wait times.