RE: oracleas 10gR2 backup

Hi LiShan,  

The cpio/tar backup of the home is a base line for restore; like a level 0 rman backup, and requires an outage.

The bkp_restore -m backup_config command is like an incremental backup of the configuration.

You would apply both to accomplish a restore.  

Re your second question:

Backup_online performs an online backup of the Metadata Repository (eg a database backup)

Backup_config performs a full configuration backup using "dcmctl exportarchive" (eg an export)  

The scripts themselves are fully reviewable if you want to know the gory details, however section 20 of the Administration Guide (B13995-03) goes into it in great detail.  

HTH   Adrian  

From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of LiShan Cheng
Sent: 09 April 2006 12:40
To: oracle-l
Subject: oracleas 10gR2 backup  

Hi  

I am configuring Oracle Application Server 10gR2 backup script on Linux. bkp_restore.pl  

I have some doubts about the backup procedure. In the documentation to perform a full middle tier backup we have to carry out these steps:  

1. Backup the middle tier Oracle Home using tar or cpio.
2. Backup the middle tier Configuration Files using this command: bkp_restore.sh -m backup_config

I wonder why I have to backup the config files when I have just made the whole ORACLE_HOME backup?  

The documentation gives this reason,  

The reason for doing a configuration file backup immediately after backing up the entire Oracle home is that it provides a snapshot of your initial configuration files, in case you start to reconfigure your system and then would like to restore the configuration files to their original state.  

I dont really understand what is it talking about, not sure if its my English. It seems to me that it is saying that in the case of when I restore the full oracle home backup and I start modifying the config files if I want to rollback the modificacions instead of restoring the whole ORACLE_HOME I can restored the config files backup from step 2? Or it is saying something else which I dont get it?  

Also does anyone know the difference between    

bkp_restore.sh -m backup_config and  

bkp_restore.sh -m backup_online  

I cant figure out the difference :-(  

TIA   LSC  

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