Oracle Automatic Storage Management: Under-the-Hood & Practical Deployment Guide

APPENDIX DTypical ASM Diskgroup Commands

This appendix discusses commands that are typically used to manage an ASM diskgroup.

The following are some examples of commands that alter a diskgroup.

Mount a Diskgroup

The command for mounting a diskgroup is as follows:

SQL> ALTER DISKGROUP DATA MOUNT;

The commands that follow are new in Oracle Database 11g.

The MOUNT RESTRICTED keywords are used as part of the new Fast Rebalance feature:

SQL> ALTER DISKGROUP DATA MOUNT RESTRICTED;

or

SQL> ALTER DISKGROUP DATA MOUNT FORCE;

With the MOUNT FORCE option, ASM attempts to mount the diskgroup forcibly even if all disks in the diskgroup were not found. Disks that were missing are forcibly taken offline. ASM successfully mounts the diskgroup only if enough ...