SAP的软件无需单独的“关系型数据库”来存储交易数据，而是用服务器的内存。
SAP's software dispenses with the separate "relational databases" where the data behind such transactions are typically stored, and instead retains the data within the server's memory.
我曾经在AIX上用250 GB内存和三个24 GB的分页空间运行大型Oracle数据库。
I have run large Oracle databases running AIX with 250 GB of memory and three 24 GB page Spaces.
因此，您数据库中的锁争用将明显降低，并且您的应用程序服务器具有更短且更分散的工作单元，这将降低CPU和JVM的内存开销。
Thus, the lock contention is significantly reduced in your database, and your application server has shorter and more discrete units of work, which reduces CPU and JVM memory overhead.
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