Database Reference
In-Depth Information
12cR1: Shared GNS
With 12cR1, the GNS can be used and shared among multiple RAC clusters, instead of just one GNS per cluster as was
the case in earlier versions of RAC.
RAC 12cR1: Restricting Service Registration
With 12cR1 by default, listener registration is now restricted to local IPs only. With this new feature, IP addresses or
subnets can be configured dynamically to allow listener registration requests. The SRVCTL command-line utility can
be used for this purpose.
Oracle ASM, ACFS, and ADVM: Improvements and New Features
As part of Oracle GI, with 12cR1, there are multiple improvements and new features within ASM, ACFS, and Oracle
ASM Dynamic Volume Manager (Oracle ADVM), for example, improved ACFS support for Oracle Grid Homes, new
ACFS security features and options to augment OS-level security features, support for implementing combination
security of Oracle Audit Vault and Oracle ACFS security, ACFS highly available NFS, ACFS snapshot improvements,
API for ACFS file tags, ASM rebalance improvements, support for ASM chown/chgp/chmod for files that are currently
open, API for ACFS plug-ins, Oracle Enterprise Manager support for new ACFS features, ASM file access control
for the Windows OS family, support for OCR backups in ASM disk groups, ACFS support for all kinds of Oracle DB
files, more OS family support for ACFS tagging and replication, ASM disk resynch improvements, enhanced support
for Cluster resources for ACFS and ADVM, rolling migration for GI one-off patches, ASMCMD improvements and
enhancements, new SQL statement functionality for ASM, etc.
NFS High Availability
With 12cR1, Oracle ACFS can be configured to provide fault-tolerant failover for NFS exports. NFS exports can be
mounted with VIP addresses. This new capability ensures that NFS exports are fault tolerant and highly available.
12cR1: CHM Enhancements
With 12cR1, CHM has been improved to be a highly available monitoring tool that provides and reflects a
consolidated cluster view by using data collectors on the nodes of the cluster. CHM now also has improved capability
to detect failures and other issues. CHM now also supports Flex Clusters.
Windows: Support for Oracle Home User
With RAC 12cR1, an Oracle home user tied with a (non-admin) Windows domain user can be specified during the
installation phase within the Windows OS family. This new functionality enables a limited number of privileges for the
Oracle home user, restricting access to Oracle products.
The password for the Oracle home user can be stored within a wallet. Oracle tools can implicitly use the
password from the wallet, thereby alleviating the need for the user to specify the password.
OUI: Enhancements and Improvements
With RAC 12cR1, OUI has been improved in multiple facets, providing support for the new RAC enhancements like
Flex Cluster, Flex ASM, etc. Commonly used configurations can also now easily be used for installation during the
initial interview process in OUI.
