brarchive CDS mode

[former_member199632]

Hi,

In our PRD environment archived redo logs are in SAVE mode (not -CDS mode)

Therefore , when it fills to a certain limit, we manually delete those archived logs and keeps the space free.

(Note that PRD backups are not automatic. Fired manually.)

But now , we are thinking of enable the CDS (Copy-Delete-Save) in PRD

I want to know is there any disadvantages , if we enable CDS mode?

(Say; Since we fire the backups manually.. if we miss a backup.... then will this be a problem? coz some archived logs may be already be deleted and may not eligible to the next backup)

Please help me to clarify.

regards,

[Former Member · Accepted solution]

Hi,
> 
> In our PRD environment archived redo logs are in SAVE mode (not -CDS mode)
> Therefore , when it fills to a certain limit, we manually delete those archived logs and keeps the space free.
> (Note that PRD backups are not automatic. Fired manually.)
> 
> But now , we are thinking of enable the CDS (Copy-Delete-Save)  in PRD
> 
> I want to know is there any disadvantages , if we enable CDS mode?
> 
> (Say; Since we fire the backups manually.. if we miss a backup.... then will this be a problem? coz some archived logs may be already be deleted and may not eligible to the next backup)
> 
> Please help me to clarify.
> 
> regards,

Hi,

We are using brarchive with "cds" option. With this option, the brarchive deletes the offline redolog files, after 2nd copy. So, if the system is creating many offline redologs in a short timeline, it might be fill up your volume and suspend the database transactions.

But, from data protection perspective, you will have 2 copy of the offline redolog files which is good.

Best regards,

Orkun Gedik