Administering Oracle ASM Disk Groups

4 Administering Oracle ASM Disk Groups

Administration of Oracle ASM disk groups includes creating, altering, dropping, mounting, and dismounting tasks.

This chapter describes how to administer Oracle Automatic Storage Management (Oracle ASM) disk groups. This information includes how to create, alter, drop, mount, and dismount Oracle ASM disk groups. The database instances that use Oracle ASM can continue operating while you administer disk groups.

The examples in this chapter use SQL statements. These examples assume that SQL*Plus is run from the Oracle grid home where Oracle ASM is installed and the Oracle environmental variables are set to this home. The examples also assume that the Oracle ASM instance is running. This chapter contains the following topics:

Managing Disk Group Attributes
Creating Disk Groups
This topic introduces information about creating disk groups.
Altering Disk Groups
You can alter a disk group with SQL*Plus, ASMCA, or ASMCMD commands.
Oracle ASM Disk Discovery
Disk discovery is the mechanism used to find the operating system names for disks Oracle ASM can access.
Managing Capacity in Disk Groups
Oracle ASM Mirroring and Disk Group Redundancy
Performance and Scalability Considerations for Disk Groups
Disk Group Compatibility
Managing Oracle ASM File Access Control for Disk Groups
Oracle ASM File Access Control provides optional protection for the content of Oracle ASM disk groups from accidental access by unauthorized Oracle ASM clients, such as an unauthorized database.
Maintaining Disk Groups
Managing Oracle ASM Flex Disk Groups
Oracle ASM provides database-oriented storage management with flex and extended disk groups.