这种内存用于数据库级的任务,例如备份/恢复、锁定和 SQL 的执行。
This memory is used by database level tasks such as backup/restore, locking, and SQL executions.
根据一份SAP文档,HANA放在内存中的数据由一个记录事务并具有能创建数据库映像的保存点的持久化层提供支持,这让它能够从停电或其它的中断中恢复。
Data held in memory by HANA is backed by a persistence layer that logs transactions and incorporates savepoints that create images of the database, according to an SAP document.
当一个数据库实用程序(例如备份、恢复、导出、导入和装载)启动时,才会按util_heap _ sz指定的大小分配全额的内存。
When a database utility is started, such as backup, restore, export, import and load, then the full amount specified by util_heap_sz is allocated.
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