Berkeley DB occasionally returns the error: “Unable to allocate memory for transaction detail”. What does that mean?
This error means the maximum number of active transactions configured for Berkeley DB has been reached. The Berkeley DB environment should be configured to support more active transactions. When all of the memory available in the database environment for transactions is in use, calls to being a transaction will fail until some active transactions complete. By default, the database environment is configured to support at least 20 active transactions. For more information see the “Configuring transactions” section of the Berkeley DB Reference Guide.