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Method and system for implementing failover for database cursors

  • US 6,728,747 B1
  • Filed: 05/10/2002
  • Issued: 04/27/2004
  • Est. Priority Date: 05/30/1997
  • Status: Expired due to Term
First Claim
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1. A method for recovering after the failure of a first server to which a client was connected for accessing a resource, the method comprising:

  • connecting a client to a first server node to access a resource for using a scrollable cursor;

    recording state information for the connection between the client and the first server node, the state information comprising an order-sensitive checksum;

    detecting that a connection between the first server node and the client has failed;

    automatically connecting the client with a second server node, the second server node configurable to access the resource, wherein the state information is utilized to determine whether the client can continue processing with previously accessed data transmitted from the first server node; and

    allowing the client to continue processing with the previously accessed data transmitted from the first server node if the state information indicates consistency with newly accessed data from the second server node.

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