Hi,
I have an ODS for which I need to do a full online backup. It
is taking us 1 hour and 44 minutes to do this. The command is below:

db2 "backup database $DBNAME ONLINE to $DBPATH with 4 buffers buffer
4096 parallelism 2 compress include logs without prompting"

Well I want to bring it down to an hour atleast because this backup is
encroaching on our other scheduled jobs. So I was planning to do this

db2 "backup database $DBNAME ONLINE to
$DBPATH,$DBPATH,$DBPATH,$DBPATH,$DBPATH,$DBPATH,$D BPATH,$DBPATH with 4
buffers buffer 4096 parallelism 2 compress include logs without
prompting"

basically splitting it into 8 files.

Will this get me a significant gain in TIME? Or are any other more
effective and tried out ways to do this? Kindly let me know

(btw, incremental and delta backups are absolutely NOT an option)

thanks.

Asphalt Blazer wrote:
> Hi,
> I have an ODS for which I need to do a full online backup. It
> is taking us 1 hour and 44 minutes to do this. The command is below:
>
> db2 "backup database $DBNAME ONLINE to $DBPATH with 4 buffers buffer
> 4096 parallelism 2 compress include logs without prompting"
>
> Well I want to bring it down to an hour atleast because this backup is
> encroaching on our other scheduled jobs. So I was planning to do this
>
> db2 "backup database $DBNAME ONLINE to
> $DBPATH,$DBPATH,$DBPATH,$DBPATH,$DBPATH,$DBPATH,$D BPATH,$DBPATH with 4
> buffers buffer 4096 parallelism 2 compress include logs without
> prompting"
>
> basically splitting it into 8 files.
>
> Will this get me a significant gain in TIME? Or are any other more
> effective and tried out ways to do this? Kindly let me know
>
> (btw, incremental and delta backups are absolutely NOT an option)

Have you tried letting DB2 choose values for BUFFERS, BUFFER and
PARALLELISM? If you omit them, DB2 will automatically calculate some
good values based on your system config and how many backup devices you
are using.

--
Matt Emmerton