About Using a DAX-Enabled File System for Persistent Memory Database

You must mount XFS in DAX mode for the Persistent Memory (PMEM) database to leverage the byte addressability provided by fsdax.

You can use a PMEM filestore for database data files and control files. For performance reasons, Oracle recommends that you store redo log files as independent files in the file system.

To use a PMEM device with Oracle Database, perform the following steps:

Configure a PMEM device in the fsdax mode.
Create a DAX-capable file system (XFS) on the PMEM device.
Mount the file system using the dax mount option.
Start the Oracle Database instance in NOMOUNT mode.
Run the CREATE PMEM FILESTORE SQL command to create and use a file in the DAX-capable file system as a backing file for the PMEM filestore.
Create a database (tablespace) on the PMEM filestore.

Requirements

You must have an Intel motherboard and Intel persistent memory (PMEM) storage device configured on your system.