Transferring Database

Question

Dear Friends
I want to export database from
Oracle 5.0 to oracle 8.0/8i,plz guide me how can i do so,database structure is not known to me so while importing in 8/8i also how can logon to oracle from unix $prompt,
plz write me the general solution of exporting and importing database
Thanks in Advance!

Answer 1

Using Oracle 9i and windows XP; one day i copied complete db from one machine to another. I am just mentioning the steps for your information please:
1.Create pfile from spfile;
2.Shutdown
3.Copy all the datafiles,redo logs, control file and init file to another machine’s folder. (I.E. J:\NEWORCL\)
4.Create required folders on another machine (as mentioned in init.ora)
5. oradim -new -sid orcl -startmode a -pfile 'J:\Neworcl\initneworcl.ora'
6.set oracle_sid=neworcl
7.orapwd file=c:\oracle\ora92\database\pwdneworcl.ora password=sys entries=5. Password file creation on the same location where existing oracle db’s password file exists.
8.sqlplus
9.connect as sys/sys as sysdba. Pw sys, because new pwfile contains pw as sys.
10.startup pfile=j:\neworcl\initneworcl.ora mount
11.alter database backup controlfile to trace as 'c:\try\ctl.txt';
12.shutdown immediate
13.startup nomount
14.open c:\try\ctl.txt and do required changes.
15.Alter database open;
You Done.
Jusr for your Information Please:
ALTER DATABASE BACKUP CONTROLFILE TO TRACE command is a script to create the control file, this file is generated at the path defined by the user_dump_dest, and the filename has the oracle process id related to the one who processed the command. We have to re-create control file because control file stores the path and name of datafile; in the above scenario.
Regards