Patent ID: 7451448

Claim:
A computer implemented method for quiescing resource consumer activity in a computer system, comprising: preventing a first resource consumer of a first group from starting a new activity on the computer system based upon a first resource plan, wherein the first resource plan comprises a configurable limit on a first maximum number of active sessions for the first group on the computer system, when the first configurable limit is configured to a quiescence value of zero, the first configurable limit is configured to limit the number of newly active session for the first group to zero, wherein no new sessions in the first group are allowed to become active, and all currently active sessions in the first group are allowed to continue; and allowing one or more second resource consumer of a second group to continue an already-running activity on the computer system based upon a second resource plan for the second group, wherein the first resource plan and the second resource plan are adapted in order to allow one or more third resource consumers of a third group to start a new activity by respectively preventing the first resource consumer from starting a new activity and by allowing zero or more second resource consumer to continue an already-running activity; and replacing the first resource plan or the second resource plan with a third resource plan upon completion of operation of the third group.