초록 ▼

A method and apparatus for aligning a restored parent environment to its child environments with minimal data loss is disclosed. The method and apparatus achieve the alignment by re-executing the transactions affecting the objects in the child environments and the revisions of the objects in the par

A method and apparatus for aligning a restored parent environment to its child environments with minimal data loss is disclosed. The method and apparatus achieve the alignment by re-executing the transactions affecting the objects in the child environments and the revisions of the objects in the parent environment in their order of execution, thereby, allowing the restored parent to further recover loss data from its child environments. The transactions are enhanced to facilitate collection of information regarding the transactions during normal operation, and to adjust their actions during their re-execution based on the information collected. As a result of further data recovery by the restored parent environment, alignment may be achieved with substantially less data loss.

대표청구항 ▼

In a network of computer systems comprising a parent environment and a plurality of child environments, wherein said parent and child environments logically comprise a plurality of objects, a method for aligning said parent environment to said child environments with minimal data loss after restorin

In a network of computer systems comprising a parent environment and a plurality of child environments, wherein said parent and child environments logically comprise a plurality of objects, a method for aligning said parent environment to said child environments with minimal data loss after restoring said parent environment, said method comprising the steps of: logging all transactions affecting revisions of objects in said parent environment and their corresponding objects in said child environments when said transactions are executed; identifying said transactions logged between a first time t0 and a second time t1 where t1 is greater than t0, said parent environment being damaged at said second time t1 and restored to its last back up time which is said first time t0; sorting said identified transactions into a chronological order in accordance to their time of execution; and performing repair action for each of said sorted transactions in said chronological order.