Recovery facility for incomplete sync points for distributed application
摘要
To recover a failed commit procedure, a first recovery facility collects and compares sync point state information from a variety of different types of resources including a data repository and a protected conversation. The comparison of the sync point state information is made automatically in response to a sync point failure event. A second recovery facility serving another execution environment notifies the first recovery facility after a failure and subsequent recovery procedure of the second execution environment has completed. The first recovery facility makes automatic cyclic attempts to communicate with the second recovery facility. The first recovery facility can receive a manually initiated but automatically simulated response of sync point state information when there is a failure such that actual sync point state information cannot be received. The first recovery facility is responsive to the simulated sync point state information to proceed with a recovery operation substantially as if actual sync point state information were received.
申请公布号
US5319774(A)
申请公布日期
1994.06.07
申请号
US19900525938
申请日期
1990.05.16
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
AINSWORTH, MICHAEL K.;BENNETT, ROBERT B.;MASLAK, BARBARA A. M.;SHOWALTER, JAMES M.;SZCZYGIELSKI, THOMAS J.;TANNER, AMOS S.