Re: Data backup/migration strategy..
- From: "Mladen Gogala" <dmarc-noreply@xxxxxxxxxxxxx> (Redacted sender "mgogala@xxxxxxxxx" for DMARC)
- To: oracle-l@xxxxxxxxxxxxx
- Date: Sat, 09 May 2015 17:59:32 -0400
On 05/08/2015 06:08 PM, Upendra nerilla wrote:
Potential solutions..
1. RMAN backups: Works better and easy. Drawback is I won't be able to
restore the backup to another environment. My understanding is that
the DBID must be the same for the restore to work.
Your understanding is wrong. In the last few weeks, something like 208
weeks ago, Oracle has added "duplicate database" command. Note that rman
operates on data files, control files and archive logs, not on schemas.
2. Transportable tablespaces: Probably efficient, haven't worked much
with it. Drawback is we'd have to transfer the files back and forth
from ASM to file system (if we need to send it to another environment)..
That is why the good lord has invented DBMS_FILE_TRANSFER:
http://docs.oracle.com/cd/E11882_01/appdev.112/e40758/d_ftran.htm#ARPLS095
I don't really like DBMS_FILE_TRANSFER because there is a lot of typing
to do, so I usually turn on ftp on the ASM:
https://blogs.oracle.com/AlejandroVargas/entry/asm_access_through_ftp_and_htm
At any rate, copying files to and from ASM is not a problem. There is
nothing to fear but the fear itself.
Even better, you wouldn't actually be copying files, you would be
restoring backups, which is not a problem.
3. RMAN backup from standby: We do have a standby that we could
potentially stop the log apply. Not sure if we could perform
transportable tablespace operations easily on standby?
You can open standby as snapshot, it's a simple "convert to snapshot"
command in DGMGRL and then everything is possible. You even get
transporters, replicators and the holodeck. Counselor Deanna Troi is a
separately licensed option.
4. Open to suggestions..
Thanks much in advance.
-Upendra
Not a problem. May the manuals be with you.
--
Mladen Gogala
Oracle DBA
http://mgogala.freehostia.com
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