Review these requirements before you install and deploy the Standard Edition High Availability feature.

• You must configure Standard Edition High Availability using at least two nodes of a cluster running Oracle Grid Infrastructure 19.7 or later for Standalone Cluster.
• You must configure Standard Edition High Availability using an Oracle Database home of version 19.7 or later.

  Note:

  When updating your Oracle Database home using Release Update (RU) 19.7 or later, ensure that you apply the Oracle Clusterware (OCW) RU of the same version to the Oracle Database home.
• Ensure that all cluster nodes on which you plan to install Oracle Database have the same operating system configuration, database users, database groups, and resource limits.
• You must store the Oracle Database binaries only on local storage or Oracle Automatic Storage Management Cluster File System (Oracle ACFS).
• You must store the Oracle Database data files only on Oracle ASM or Oracle ACFS.
• If you are using Oracle ACFS for storing data files, then you must register Oracle ACFS as a clusterware resource. The Oracle Database software owner user (oracle) must be the mount owner of the Oracle ACFS volume. When using an Oracle home on Oracle ACFS, Oracle recommends that you have Oracle base on the local file system.
• If you are using a local file system, then you must have the same single-instance Standard Edition 2 installation and updates on each node. You must also use the same Oracle base and Oracle home directory structure on each node.
• You must perform the same Oracle home operations on all the nodes.
• You must use an SPFILE for the database instance initialization parameters and a database password file stored for the database instance initialization parameters in Oracle ASM or Oracle ACFS. This approach ensures that the parameters are consistent across all nodes and the password file is available after a failover or a relocation.
• You must register the Standard Edition 2 single-instance database with SCAN listeners as remote listener and node listeners as local listener.