File system for FRA and external backups

Oracle 11g R2.

The FRA drive is formatted using Linux x 83 put on Diskgroup + FRA system.

Backups are stored outside on an ext3 file system.

Suppose now the database gets completely crashed and I need to recover by continuing external backups.  I will copy the external backups to the + FRA disk and then perform the recovery from there.

My question is, given that external backups are on ext3 file system, while the FRA is the Oracle ASM filesystem, there will be a problem for the use of the file systems of the two difference?

Thank you

Scott

scottjhn wrote:

To summarize the issue:

In my system, the database will be on ASM disk group + DATA (disk1 disk2).

I will use another disk, disk3 (ext3 file system) for FRA, to organize data files backups and multiplexed logs (archive logs, online newspapers and control files).

Earlier you said "I'll use the + FRA (ASM disk group) for the fast recovery area that holds that archiving multiplexed logs, recovery online logs, and control files.»  Nothing else. »

Now, I need one more place to hold the copy of the multiplexed logs.

Wouldn't not on the same + (ABOVE)?  Alternatively, use a disk full-fledged, disk4 (ext3 file system)?

Thank you

Scott

First of all, the reason for multiplexing online redo logs and control files is not the same as that of multiplexing archivelogs. Do it online and the control file are actually a part of the database.  The database will not work without them.  This is why it is so important to have multiplex.  Archivelogs, on the other hand, are part of your backup strategy.  The database itself really doesn't care if you have any archivelogs at all.  The archivelogs multiplexing is much less common.  I have never multiplexed mine, but I do not have a task that runs every hour to copy any newly created on a server off-site.

If your database is on ASM, at least a control file and a member of each group of redo log must be in ASM.  Technically, is not having to be, but it's really foolish not to do so.  Where to put the second copy?  Probably several schools of thought on this.  If your FRA is on ext3, so it seems a simple decision... a FRA copy, a copy in its default location in ASM.

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