Re: parallel backup and restore w onbar
Posted in 2008
I think you mean :
"can I do parallel backup and restore on an instance that has ONLY
databases WITHOUT transaction logging?"
As long as you backup the logical logs yes you can, but maybe you shouldn't:
If your databases spawn more than 1 dbspace, and there are tables
related among the dbspaces, then the data will be logically corrupted,
take this example:
- Instance with a single non-logging database named "mydb", created in
rootdbs.
- "mydb" has 2 tables :
+ "parent"
+ "child"
- You have a foreign key from child to parent.
- Each table is a different dbspace
A parallel backup/restore will work, however the tables will probably be
out of syncs (You oculd get parents without children or children without
parent).
This is becasue a parallel backup is in reality a dbspace backup. YOu
can only take snapshots of the dbspaces.
Without logs there is no way to "glue" this backups to see the "whole
picture"
Gustavo
Floyd Wellershaus wrote:
> hello,
> In IDS10, using onbar, can I do parallel backup and restore on an
> instance that has no database transaction logging ?
> I think I should be able to, as long as I backup the logical logs and
> logs will need to be restored during a parallel restore. Is that correct ?
>
> ps. I realize I won't be getting schema changes that occurred since
> the last archive, but that's ok for now.
>
> Thanks,
> Floyd
>
>
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