A db2 database backup consists of a full dump of the database and an archive of 
the recovery log. On tape, these are written on one tape, on FILE, there is no 
reason to cram it in one volume, so two volumes are created.

On 15 dec 2009, at 11:39, Grigori Solonovitch wrote:

> We are testing TSM 6.1.2.1 under AIX 5.3-09-02.
> I have found that "BACKUP DATABASE DEVCLASS=DBB TYPE='Incremental' 
> VOLUMENAMES=' db151209.dbv'" produces 2 files in directory:
> -rw-------    1 tsm      tsm       419537593 Dec 15 13:09 db151209.dbv
> -rw-------    1 tsm      tsm       453116604 Dec 15 13:09 60871748.dbv
> It looks we have two sequential incremental backups. Am I right? What is the 
> second file?
> For TYPE='Full' TSM produces only one file.
> Device class DBB is:
> tsm: BKME>q devc dbb f=d
>               Device Class Name: DBB
>         Device Access Strategy: Sequential
>               Storage Pool Count: 0
>                         Device Type: FILE
>                                 Format: DRIVE
>          Est/Max Capacity (MB): 8,192.0
>                          Mount Limit: 20
>                  Mount Wait (min):
>           Mount Retention (min):
>                          Label Prefix:
>                                 Library:
>                              Directory: /DBB
>                         Server Name:
>                         Retry Period:
>                        Retry Interval:
>                                 Shared:
>                 High-level Address:
>                Minimum Capacity:
>                                WORM: No
>                   Drive Encryption:
>                     Scaled Capacity:
> Last Update by (administrator): SA25577
>           Last Update Date/Time: 05/11/09   11:47:04
> 
> 
> Grigori G. Solonovitch
> 
> Senior Technical Architect
> 
> Information Technology  Bank of Kuwait and Middle East  http://www.bkme.com
> 
> Phone: (+965) 2231-2274  Mobile: (+965) 99798073  E-Mail: G.Solonovitch AT 
> bkme DOT com<mailto:G.Solonovitch AT bkme DOT com>
> 
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-- 
Met vriendelijke groeten/Kind Regards,

Remco Post
r.post AT plcs DOT nl
+31 6 248 21 622