| US 7,552,218 B2 | ||
| Transparent session migration across servers | ||
| Sanjay Kaluskar, Menlo Park, Calif. (US); Sreenivas Gollapudi, Cupertino, Calif. (US); and Debashish Chatterjee, Fremont, Calif. (US) | ||
| Assigned to Oracle International Corporation, Redwood Shores, Calif. (US) | ||
| Filed on Aug. 12, 2004, as Appl. No. 10/917,953. | ||
| Claims priority of provisional application 60/495368, filed on Aug. 14, 2003. | ||
| Prior Publication US 2005/0038848 A1, Feb. 17, 2005 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. G06F 15/16 (2006.01); G06F 12/00 (2006.01) | ||
| U.S. Cl. 709—227 [709/238] | 30 Claims |
| 1. A method, the method comprising the computer-implemented steps of:
receiving a request to establish a certain session for a client of a multi-node system;
wherein a first database server runs on a first node of said multi-node system;
wherein a second database server runs on a second node of said multi-node system;
establishing as the certain session a first database session with said first database server of the multi-node system;
determining to transfer the certain session to said second database server;
transferring first session state of the first database session from the first database server to a second database session
on the second database server;
wherein said first session state comprises temporary variable values generated by one or more processes executing database
component software within the database session; and
establishing the second database session as the certain session for the client.
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