Please download the dossier by clicking on the dossier button x
×

Method for highly available transaction recovery for transaction processing systems

  • US 7,620,842 B2
  • Filed: 07/28/2006
  • Issued: 11/17/2009
  • Est. Priority Date: 02/22/2002
  • Status: Active Grant
First Claim
Patent Images

1. A method for recovering transactions comprising:

  • providing a cluster of servers executing on one or more computers, wherein each computer includes a computer readable medium and a processor operating thereon;

    providing, at each of the servers within the clustera transaction recovery service, anda corresponding transaction log for which the transaction recovery service has ownership and which is stored on a shared computer readable medium also accessible by other servers in the cluster;

    detecting, within the cluster, a failure of a primary server associated with a first transaction recovery service and a first transaction log stored on the shared computer readable medium, wherein the first transaction log includes records of a current transaction and participants being coordinated by the primary server for participation in the current transaction;

    performing failover migration of the first transaction recovery service from the failed primary server to a back-up server in the cluster that also has access to the shared computer readable medium, and maintaining ownership by the first transaction recovery service of the first transaction log;

    performing transaction recovery for the failed primary server by the first transaction recovery service at the back-up server, using the first transaction log, and including processing any unfinished transactions; and

    after primary server transaction recovery is complete, performing failback migration of the first transaction recovery service from the back-up server to the primary server to allow the primary server to service new or subsequent transactions.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×