In PowerBSORT, the best size of the work area for executing the sort merge processing is calculated and the high-speed sort merge processing can be achieved. PowerBSORT uses a work area of up to 2 gigabytes or less. When a user specifies the memory size in an environment variable or a command option, the work area to exceed the value specified by the user is not secured.
To run PowerBSORT efficiently, we recommend to specify 1/50 or more of the memory size of the amounts of input data. However, when the calculation value (1/50 of the amounts of the input data) falls below 8192 kilobytes, we recommend that you specify 8192 kilobytes or more.
