Clone in same machine cold/hot

Question

Hi,
1,What are the things i have to consider before start the cloning(both cold,hot).
2,please anyone provide steps for that.
3,Is the listener should be started before starting the procedure in target machine?
4,I am planned to do in same machine or different location(mount point) in another machine.
Should I set db/log_file_name_convert in init.ora file?
If i used same machine,should i change instance_name in clone database?
5,If i used same machine or different location(mount point) in another machine ,should i take control file backup from source?
6,what situation we used the control file trace?
7, when will use reset or set in creation of control file manually?

Answer 1

user3266490 wrote:
Hi,
1,What are the things i have to consider before start the cloning(both cold,hot).
2,please anyone provide steps for that.
To get Cold backup using rman just need STARTUP MOUNT and BACKUP DATABASE command from RMAN.But if you want manually(user managed) then you must first identify all control/data and online log files according from v$controlfile,v$datafile and v$logfile views,After that you need SHUTDOWN IMMEDIATE and copy using OS commands(cp or copy) these files to other location and this will your cold backup.
But to getting HOT backup your database must be running in ARCHIVELOG mode.After enabling ARCHIVELOG( using SHUTDOWN IMMEDIATE;STARTUP MOUNT;ALTER DATABASE ARCHIVELOG);Then while database running you can execute BACKUP DATABASE command through rman or using user managed you need ALTER DATABASE BEGIN BACKUP(or ALTER TABLESPACE BEGIN BACKUP) and copy all data/control and logfile toother location and this will your hot backup.
3,Is the listener should be started before starting the procedure in target machine?
Do not need listener
4,I am planned to do in same machine or different location(mount point) in another machine.
Should I set db/log_file_name_convert in init.ora file?
Yes,you can use.But in this case you also have to use DB_UNIQUE_NAME initialization parameter.
If i used same machine,should i change instance_name in clone database?
Yes.
>
5,If i used same machine or different location(mount point) in another machine ,should i take control file backup from source?
You always/anyway need backup/copy controlfile.
6,what situation we used the control file trace?
In this situation do not need.
7, when will use reset or set in creation of control file manually?Reset controlfile use performin incomplete recovery which we want return database past time which before resetlog.In this case you need reset database(it means controlfile).But recreating controlfile need if you do not have backup of controlfile and have all data/online log files.So in this case you can use recreate controlfiles.