Change the Global Memory Allocation Limit
Change the Global Memory Allocation Limit
The SAP HANA database preallocates a pool of memory from the operating system over time, up to a predefined global allocation limit. You can change the default global allocation limit.
Prerequisites
Context
Changing this parameter does not require a restart.
Procedure
You can enter a value for the entire system and for individual hosts. If you enter only a value for the system, it is used for all hosts. For example, if you have 5 hosts and you set the limit to 5 GB, the database can use up to 5 GB on each host (25 GB in total). If you enter a value for a specific host, then for that host, the specific value is used and the system value is only used for all other hosts. This is relevant only for multiple-host (distributed) systems.
Refer to the Workload Management section for details of other options for managing memory including setting a statement limit and admission control.
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