.IABerkeley DB Reference Guide: Transaction Subsystem[P;

Berkeley DB Reference Guide: Transaction Subsystem



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Transaction limits



FThe transaction ID space in Berkeley DB is 2^31, or 2 billion entries.BIt is possible that some environments may need to be aware of this limitation.CConsider an application performing 600 transactions a second for 15 hours a day.9The transaction ID space will run out in roughly 66 days::



FDoing only 100 transactions a second exhausts the transaction ID spacein roughly one year.

JThe transaction ID space is reset each time recovery is run. If you reachEthe end of your transaction ID space, shut down your applications andArestart them after running recovery. The most recently allocatedCtransaction ID is the st_last_txnid value in the transactionistatistics information, and is displayed by the db_stat utility.

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