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Home -> Community -> Usenet -> c.d.o.misc -> Re: Copy instance
Marcel:
Please check metalink.oracle.com. It has a wealth of information :-)
HTH,
Vladimir
Here it is..
1.) From your source database issue the command 'alter database backup
controlfile to trace' , this will create a .trc file which you will
modify and rename to a .sql file. You will use this file for two
things: first, to create a copy script to copy all the files listed in
it to a new location where you would like them to be for your second
instance. Secondly, you will then use it to create your control file
for your second instance.. remove any comments, modify the locations
of all the files and change the following
<create control file reuse database "dbname" noresetlogs> to
<create control file set database "newdbname" resetlogs>.
and make sure the last line reads alter database open resetlogs
3.) shutdown the source database
2.) set ORACLE_SID to the new value for your second instance.
3.) create new initsid.ora and configsid.ora files for your second instance(I copy them from the other instance), modify them to reflect the new sid and file locations of the second instance.
4.) run the script that will copy all your data files
5.) svrmgrl
6.) run your create control file .sql file and BE SURE all references to files are actually pointing the NEW locations and not those belonging to the other instance.
Don't forget to have complete backups before doing all this and you will have to add this instance to any sqlnet related .ora files,oratab etc.......
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