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NFS Locking Problems Encountered During Database Startup (Doc ID 236794.1)

Last updated on NOVEMBER 27, 2023

Applies to:

Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Oracle Database - Enterprise Edition - Version 7.0.16.0 to 11.2.0.3 [Release 7.0 to 11.2]
Oracle Database Cloud Schema Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Generic UNIX

Purpose

This document aims to describe some possible issues with databases where the datafiles, redo logs, control files or any other file located on an NFS mounted disk. 

Scope

This article is intended for database administrators, who work with databases with files on an NFS mounted disk.
Note that Network Appliance (NetApp) and EMC disk systems can employ NFS.

Oracle does not support and recommend using an NFS device unless the NFS vendor is a member of the Oracle Storage Compatibility Program (OSCP). This was the case till 10g releases.

Members in the Oracle Storage Compatibility Program (OSCP) test and verify their products compatibility with the Oracle Server product.

The main problem with NFS is that the protocol is not reliable the vendors in the OSCP have gotten around the technical problems of NFS, which would make NFS services reliable

For 11.2 release check the standard document.

 

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