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Configuration Parameter File Reference
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Size of the generic memory heap.
[config]  gmheap=n
Number of kilobytes allocated for the generic memory heap for InterSystems IRIS. This is the allocation from which the Lock table, the NLS tables, and the PID table are also allocated. For Asian locales, add one extra megabyte (1024 KB) to the total gmheap value.
To ensure optimal performance during a journal restore, InterSystems recommends increasing the generic memory heap size; see Restore Journal Files in the “Journaling” chapter of the Data Integrity Guide for more information.
The generic memory heap (gmheap) is sometimes known as the shared memory heap (SMH).
Range of Values
16 MB to one terabyte. The default is 37568 KB (37 MB). On IBM AIX and HP-UX, the default is 53952 KB (54 MB).
Management Portal
On the page System Administration > Configuration > Additional Settings > Advanced Memory, in the gmheap row, select Edit. Enter a number of kilobytes. For more information, see gmheap in the Advanced Memory Settings section of the Additional Configuration Settings Reference.