Maxparallelworkers

Limits the total number of parallel workers that can be created within a single Firebird process for each attached database.Integer values in the range between 1 (no parallelism) and 64 are allowed.All other values are silently ignored and the default value of 1 is used.

Specifies the default number of parallel workers for a single task.Integer values in the range between 1 (no parallelism) and MaxParallelWorkers (see above) are allowed.All other values are silently ignored and the default value of 1 is used.