Hi, all!
There are a short holidays now in our organization and i
want to do cold backup. I can't do it at another time as some
users are working at any time of day and night.
During the hot backup i ran script in server manager:
alter tablespace tbs1 begin backup;
host dd if=... of=/dev/nrmt0h
....
alter tablespace tbs1 end backup;
alter tablespace tbs2 begin backup;
...
Should i run similar script if i shut down instance?
Or how i can do it in UNIX?
I have 30 datafiles and backup is lasting usually about 7 hours.
I don't want wait near computer when each file will be copied
to DLT and then write comand for next file .
And once more question:
our system (UNIX) administrator said that i have to copy files
using dd (not tar) as with tar files will shrink and restore will not
correct. Is it so?
Thank you!