Category: ASM

ASM Disks Creation for RAC: [root@paw-racnode1 ~]# chown oracle:oinstall /dev/sd[b-k] [root@paw-racnode1 ~]# vi /etc/rc.d/rc.local [root@paw-racnode1 ~]# fdisk -l                       [root@paw-racnode1 ~]# fdisk /dev/sdb [root@paw-racnode1 ~]# fdisk /dev/sdc [root@paw-racnode1 ~]# fdisk /dev/sdd [root@paw-racnode1 ~]#…

Automatic Storage Management Fast Mirror Resync in Oracle 11g: The main purpose of Introducing ASM was to provide a batter Data Redundancy to the database and to discourage RAID at hardware level. ASM…

Oracle ASM File Access Control for Disk Groups in Oracle 11g: Oracle ASM File Access Control provides optional protection for the content of Oracle ASM disk groups from accidental access by unauthorized…

Using ASM Scalability and Performance Enhancements in Oracle 11g: This feature increases the maximum data file size that Oracle can support to 128 TB. ASM supports file sizes greater than 128 TB…

Oracle 11g ASM Diskgroup Compatibility: In Oracle 10.2, the are two new column COMPATIBILITY and DATABASE_COMPATIBILITY added to the V$ASM_DISKGROUP view, but only in Oracle 11g introduce the concept of diskgroup attributes and the V$ASM_ATTRIBUTE view. New…

ASM Preferred Mirror Read in Oracle 11g R2: Until Oracle 10g, Automatic Storage Management used to read only Primary copy of extents. This isn’t a problem when both nodes and both failure groups are all located…

ASM Optimal Disk Placement (ODP) in Oracle 11gR2: As of Oracle 11gR2 it is possible to specify on which disk regions the ASM Disks will be placed. This enables us to make…