Setting up permissions for root configuration scripts to run without user interventioncan simplify database installation and help avoid inadvertent permission errors.Related Topics•Installing Oracle RAC and Oracle RAC One Node Database SoftwareInstall Oracle RAC or Oracle RAC One Node software.Resupport of Direct File Placement for OCR and Voting DisksStarting with Oracle Grid Infrastructure 19c, the desupport for direct OCR and votingdisk file placement on shared file systems is rescinded for Oracle Standalone Clusters.For Oracle Domain Services Clusters the requirement to place OCR and voting files in11
Oracle Automatic Storage Management (Oracle ASM) on top of files hosted on sharedfile systems and used as ASM disks remains.In Oracle Grid Infrastructure 12c Release 2 (12.2), Oracle announced that it would nolonger support the placement of the Oracle Grid Infrastructure Oracle Cluster Registry(OCR) and voting files directly on a shared file system. This desupport is now rescind‐ed. Starting with Oracle Grid Infrastructure 19c (19.3), with Oracle Standalone Clus‐ters, you can again place OCR and voting disk files directly on shared file systems.Related Topics•Using a Cluster File System for Oracle Clusterware FilesOptional Install for the Grid Infrastructure Management RepositoryStarting with Oracle Grid Infrastructure 19c, the Grid Infrastructure Management Repo‐sitory (GIMR) is optional for new installations of Oracle Standalone Cluster. Oracle Do‐main Services Clusters still require the installation of a GIMR as a service component.The data contained in the GIMR is the basis for preventative diagnostics based on ap‐plied Machine Learning and can help to increase the availability of Oracle Real Appli‐cation Clusters (Oracle RAC) databases. Having an optional installation for the GIMRallows for more flexible storage space management and faster deployment, especiallyduring the installation of test and development systems.Related Topics•About the Grid Infrastructure Management RepositoryDeprecated FeaturesReview features that are deprecated starting with Oracle Database 19c.For more information about deprecated features, parameters, and views, refer to Ora‐cle Database Upgrade Guide•Init.ora Parameter CLUSTER_DATABASE_INSTANCES is DeprecatedThe Oracle Database initialization parameter CLUSTER_DATABASE_INSTANCESisdeprecated in Oracle Database 19c (19.1)The init.oraparameter CLUSTER_DATABASE_INSTANCESspecifies the number ofconfigured Oracle Real Application Clusters (Oracle RAC) instances. Starting withOracle Database 19c and later releases, the number of configurable Oracle RACinstances is derived automatically from the Oracle Clusterware resource defini‐tions. There is no replacement for this parameter, because there is no longer areason to have this parameter.