<p>A method and apparatus for managing locks in a database system is provided. A master node grants a lock on a first resource and a group of resources that includes the first resource to a first requester node. The requester node receives a mapping corresponding to the group of resources that may indicate that a lock already exists for a second resource in the group. If the requester node desires a lock on a resource located in the group, the requester node grants itself the lock without notifying the master node. A second requester node requests a lock for a particular resource in the group of resources. The first requester node grants the lock on the particular resource and updates the mapping to indicate that a different node holds a lock for the particular resource.</p>
申请公布号
EP1979814(A2)
申请公布日期
2008.10.15
申请号
EP20070717005
申请日期
2007.01.23
申请人
ORACLE INTERNATIONAL CORPORATION
发明人
HO, EUGENE;CHAN, WILSON WAI SHUN;WANG, TAK FUNG;PRUSCINO, ANGELO;YUREK, TOLGA