Steps to Backup And Restore ASM Metadata

Steps to Backup And Restore ASM Metadata
————————————————————–

Set the environment to ASM using .oraenv
Issue asmcmd to start the ASM client

The md_backup command makes a copy of the metadata for one or more disk groups. The summary usage is shown below.

     md_backup [-b location_of_backup] [-g dgname [-g dgname …]]

An example of the command is shown below. The resulting file contains all the metadata needed to recreate the ASM setup.

     ASMCMD [+] > md_backup -b /tmp/backup.txt -g data

     Disk group to be backed up: DATA

     ASMCMD [+] >

RESTORE METADATA

The md_restore command allows a restore of a disk group from the metadata created by the md_backup command. It also allows a certain amount of manipulation of the final disk groups during the restore. The summary usage is shown below.

     md_restore -b <backup_file> [-li]
                       [-t (full)|nodg|newdg] [-f <sql_script_file>]
                       [-g ‘<diskgroup_name>,<diskgroup_name>,…’]
                       [-o ‘<old_diskgroup_name>:<new_diskgroup_name>,…’]

A straight restore of the backup taken previously is shown below.

     ASMCMD [+] > md_restore -b /tmp/backup.txt -t full -g data

  • January 18, 2017 | 14 views
  • Comments