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<concept xml:lang="en" id="GUID-432FF981-010F-540B-834F-FF924238AA2A"><title>epocheapsize</title><prolog><metadata><keywords/></metadata></prolog><conbody><p> <codeph>epocheapsize</codeph>  <varname>minimum</varname> <varname>maximum</varname>  </p> <p>Use the <codeph>epocheapsize</codeph> statement to specify the minimum and maximum sizes of the initial heap for a process. The default sizes are 4KB minimum and 1MB maximum.This directive is applicable from Symbian OS v9.1, EKA2 releases. EKA2 supports multiple process creation and allows the heap size to be calibrated between the minimum and maximum limits. </p> <p>The minimum size specifies the RAM that is initially mapped for the heap's use. The process can then obtain more heap memory on demand until the maximum value is reached. For more information, see <xref href="GUID-BFEBCD57-3C83-56D7-B7A3-B8A361725645.dita">Memory Management concepts</xref>. </p> <p>The sizes can be specified in decimal or hexadecimal format. Memory is allocated in pages, so the minimum and maximum values are rounded up to a multiple of the page size (4K). </p> </conbody></concept>