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System Options under OpenVMS

REALMEMSIZE= System Option: OpenVMS

Specifies the amount of real memory SAS can expect to allocate.
Default: 0
Valid in: configuration file, SAS invocation, VMS_SAS_OPTIONS DCL symbol
Category: System administration: Memory
OpenVMS specifics: valid values



REALMEMSIZE=n | nK | nM | nG | hexX | MIN | MAX

n | nK | nM | nG

specifies the amount of memory to reserve in multiples of 1 (bytes); 1,024 (kilobytes); 1,048,576 (megabytes); or 1,073,741,824 (gigabytes), respectively. The value of n can be a decimal value. For example, a value of 8 specifies 8 bytes, a value of .782k specifies 801 bytes, and a value of 3m specifies 3,145,728 bytes.


specifies the amount of memory as a hexadecimal value. You must specify the value beginning with a number (0-9), followed by hexadecimal characters (0-9, A-F), and then followed by an X. For example, the value 2dx sets the amount of memory to 45 bytes.


specifies a value of 0, which indicates that the memory usage is determined by SAS when SAS starts. This is the default value and should not be changed under normal conditions.


specifies to set the memory size to the largest permissible value.


Use the REALMEMSIZE= system option to optimize the performance of SAS procedures that alter their algorithms and memory usage. Setting the value of REALMEMSIZE= too low might result in less than optimal performance.

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