System for highly available transaction recovery for transaction processing systems
First Claim
1. A transaction recovery system comprising:
- a first server;
said first server having a memory;
said memory of said first server comprising;
a first server instance having transaction recovery functionality, the first server instance owning a first transaction log;
a second server;
said second server having a memory;
said memory of said second server comprising;
a second server instance having transaction recovery functionality, the second server instance owning a second transaction log; and
a shared memory, the first transaction log and the second transaction log residing on the shared memory, wherein normally the first server instance coordinates at least one transaction from the first transaction log and wherein, upon the failure of the first server instance, the second server instance coordinates the at least one transaction from the first transaction log.
1 Assignment
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Accused Products
Abstract
A highly available transaction recovery service migration system in accordance with one embodiment of the present invention implements a server'"'"'s Transaction Recovery Service (TRS) as a migratable service. In one embodiment of the present invention, the TRS is a server instance or software module implemented in JAVA. The TRS migrates to an available server that resides in the same cluster as the failed server. The migrated TRS obtains the TLOG of the failed server, reads the transaction log, and performs transaction recovery on behalf of the failed server. The migration may occur manually or automatically on a migratable services framework. The TRS of the failed server migrates back in a fail back operation once the failed primary server is restarted. Failback operation may occur whether recovery is completed or not. This expedites recovery and improves availability of the failed server thereby preserving the efficiency of the network and other servers.
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Citations
12 Claims
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1. A transaction recovery system comprising:
- a first server;
said first server having a memory;
said memory of said first server comprising;
a first server instance having transaction recovery functionality, the first server instance owning a first transaction log;
a second server;
said second server having a memory;
said memory of said second server comprising;
a second server instance having transaction recovery functionality, the second server instance owning a second transaction log; and
a shared memory, the first transaction log and the second transaction log residing on the shared memory, wherein normally the first server instance coordinates at least one transaction from the first transaction log and wherein, upon the failure of the first server instance, the second server instance coordinates the at least one transaction from the first transaction log. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- a first server;
Specification