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About using Veritas Access with Oracle Direct NFS

Veritas Access Administrator's Guide

Veritas Access lets you create and manage storage for Oracle database clients. Oracle hosts access the storage using Oracle Direct NFS (DNFS).

Oracle Direct NFS is an optimized NFS (Network File System) client that provides faster access to NFS storage that is located on NAS storage devices. The Oracle Database Direct NFS client integrates the NFS client functionality directly in the Oracle software. Through this integration, the I/O path between Oracle and the NFS server is optimized, providing significantly better performance. In addition, the Oracle Direct NFS client simplifies and, in many cases, automates the performance optimization of the NFS client configuration for database workloads.

The Oracle Direct NFS client outperforms traditional NFS clients, and is easy to configure. The Oracle Direct NFS client provides a standard NFS client implementation across all hardware and operating system platforms.

Veritas Access creates different storage pools for different Oracle object types. Veritas Access has the following storage pools as described in Table: Veritas Access storage pools for Oracle object types.

Table: Veritas Access storage pools for Oracle object types

Pool Name	Database Object Type	Function
ora_data_pool	Oracle TABLE data files	Stores TABLE data of data files. This database object type uses striped volumes over four LUNs. The stripe size is 256K.
ora_index_pool	Oracle INDEX files	Stores INDEX data.
ora_temp_pool	Temporary files	Stores temporary files. The storage administrator should make sure the LUNs are from the fastest tier. Temporary files are used for sort, merge, or join queries.
ora_archive_pool	Archive logs	Stores archive logs. This database object type is a concatenated volume. Tier 2 LUNs can be used for this storage pool.
ora_txnlog_pool	REDO txnlog files	Stores REDO transaction logs. It is recommended to assign the fastest storage LUNs to this storage pool.