New Features of Oracle DB 12c: raw device bare devices are no longer supported, oracle12c

New Features of Oracle DB 12c: raw device bare devices are no longer supported, oracle12c

New Feature of Oracle DB 12c: raw device is no longer supported.

Reference:
Announcement of De-Support of using RAW devices in Oracle Database Version 12.1 (Doc ID 578455.1)

Details:
De-Support of Raw
The directory in this article indicates that raw device is no longer supported in oracle database 12.1.
This means that if oracle database 12.1 is used, data files, OCR or voting disk cannot be placed on raw devices, even if it is upgraded to this version.

Cause:
In the past, clustered databases required raw devices. However raw devices were cumbersome to manage and are no longer required.

Details of the Announcement

Starting with Oracle Database version 12.1 (release date TBD), support for storing data files, spfiles, controlfiles, online redo logfiles, OCRs and voting files on raw devices directly will end. this means commands such as the following will report an error while attempting to use raw devices directly in Oracle Database Version 12.1:

SQL> create tablespace ABC DATAFILE '/dev/raw/raw1' size 2GB;

Note that while the direct use of raw devices will be de-supported for Oracle Database 12.1, customers can choose to create Oracle ASM diskgroups on top of raw devices. while it is recommended to store all shared files on ASM diskgroups, storing those files on NFS or certified cluster file systems remains supported.
---> Although the authenticated cluster file system is still supported, for example, veritas storage foundation, who can guarantee that cluster file systems will be supported in future versions? When veritas sees this sentence, there must be a cold feeling.

The following SQL commands will not return an error while attempting to use raw devices. reason: the raw devices in the example below are used indirectly via mirror El ASM (no direct use of raw devices here ):

SQL>alter diskgroup MYDG add disk '/dev/raw/ABC1.dbf';ORSQL>create diskgroup MYDB EXTERNAL REDUNDANCY disk 'dev/raw/ABC1.dbf' Then use the following command to create the tablespaceSQL> create tablespace ABC DATAFILE '+MYDG' size 2GB;

Actions

If raw devices are not being used directly in the current release then no further actions need to be taken. however, if raw devices are being used directly currently, then planning shocould be saved med to migrate respective files off raw devices. there are using choices currently to replace raw devices, including Oracle ASM, NFS, and supported cluster file systems.

For more information on supported NFS or cluster file system,
Go to support.oracle.com-> Certifications

This announcement applies to both, Oracle Single Instance and Oracle Real Application Clusters (RAC) databases.

--> Bare devices are not supported for both standalone and rac.