MOUNT-IMAGE

Mounts a physical backup of a database and enables it to be accessed in read-only format.

Syntax

MOUNT-IMAGE

Restrictions

• MOUNT-IMAGE is only available in the SYSMAN account.

• MOUNT-IMAGE may only be run by the database owner.

• A physical save cannot be restored on a host with different byte ordering; for example, a SAVE-IMAGE save of a Windows (Intel) database can be restored on a Linux (Intel) system, but not on a Solaris (SPARC) system.

• MOUNT-IMAGE does not support encrypted tape drives.

• MOUNT-IMAGE does not support ‘raw mode’ saves.

• Although MOUNT-IMAGE could be used with an actual tape drive, for performance reasons it is only useful to use it with tape images.

Comments

• MOUNT-IMAGE enables an image save of a database to be mounted and accessed as if it were a live database (but read-only), thus enabling files and items to be accessed remotely. A skeleton database needs to be created, and you must supply a path and name for this database (defaults can be used). You must then supply a list of tape unit numbers, or paths, to tape images the database was saved to.
• MOUNT-IMAGE will create remote account pointers to any accounts you specify. These are standard R-pointers and can be created later if preferred. You must then manually create Q-pointers to the files you wish to access.

Procedure

1. Ensure that the tape is loaded and on-line, and you are logged on to SYSMAN.

2. Enter at the TCL prompt:

   MOUNT-IMAGE

   The following screen is displayed:

   		                Mount Image Main Menu
   
        1. Mountpoint Name       = @_16.0
        2. Mountpoint Path       = C:/Cora/Dbase
   				
        3. Add Tape Units/Paths  =
   				
   				
   				
        4. Account Prefix        = @_
        5. Add Accounts to Mount =
   				
      Account                                Mount As
      =======                                ========
   
        6. Delete Account    7. Delete Tape
   				
   
   
   
   												
   				
      Enter option, ?:help, m:mount image, a:abort :				
   				

3. Leave options 1 and 2 unchanged or change them as required. (Default values come from the skeleton database, as created by mkdbase –m or realload –I commands.)

4. Add the tape drives required on line 3 - i.e. tape unit numbers or paths to the tape images. If using tape paths and the line overflows, press RETURN and then use option 3 to add another drive.

5. If you want any remote account (R-pointers) created, enter the account name(s) on line 4.

6. If you have made a mistake, use options 6 or 7 to delete any account or tape drive.

7. When you are ready, enter m to mount the image.

8. Enter x to exit the menu.

9. Create any Q-pointers required to access files in the remote accounts.

See also

realload host command, LOAD-IMAGE, SAVE-IMAGE, realdump host command.