Vivek,
Answers to your questions embedded. You may want to
read up on the manuals for more details. BTW, you
don't have to copy my e-mail id in your replies, given
that I belong to the list, just as many others. I am
trying to avoid getting 2 copies of every e-mail that
you send.
Cheers,
Gaja
Gaja ,
Good indeed to see you back on the List .
My Qs. in CAPITALS below :-
-Original Message-
Sent: Wednesday, April 02, 2003 2:14 AM
To: Multiple recipients of list ORACLE-L
All,
The primary reason why RMAN does not generate
excessive redo is because because it does not put the
Qs.1 Why is NO excessive Redo Generated wsing RMAN Backups unlike HOT Backups
when taking backup of an OPEN Database which is undergoing User Transactions ?
(Or am i mistaken ?)
Qs.2 How does RMAN manage Incremental Database Backups ? What is the Concept behing it
?
Qs.3 How does RMAN Check
1: RMAN does not generate excessive redo because it does not use the 'alter tablespace
... begin backup' command. It instead coordinates with dbwr, somehow, to be sure it
is getting a consistent view of the tablespace.
2: The concept of an incremental backup is that you only backup the
Vivek
1. RMAN works on an entirely different principle than hot backups. Much more
transparent to the database.
2. RMAN incremental backups work by checking if a block has changed since
the last incremental backup of the current level or lower. So only changed
blocks get backed up on an
No excessive Redo ...one of RMans new features..
I will have to write a book here to give you good answers...
I would suggest reading the really good cheat sheet on technet on
Backup and recovery...they are very good and complete..
If not that just search google for RMAN faq and you
I need help,
I have a procedure to insert xml data into a table.
The xml data is store in CLOB, and i user xml parser
and DOM to get the value and insert into table.
If the file is is under 1 MB, everything is OK.
But when the xml size is larger than 1 mb i'll
get error message
ORA-29532: Java
Qs.4 Is it easy to integrate 3rd part tools like Legato etc with RMAN
for enabling taking of backups onto backup devices OR does it need an
extensive setup ?
I found it to be fairly easy to get RMAN working with Legato NetWorker. We
had to go through a few hoops to get it working on a Veritas
Answer 1: RMAN keeps track of increasing SCNs of any changing datablock
within the datafile being backedup. Hence not much redo.
Answers to other questions have been posted by others.
HTH
GovindanK
|XXX|
|You should treat
All,
The primary reason why RMAN does not generate
excessive redo is because because it does not put the
tablespace in hot backup mode. Thus any blocks
belonging to a given tablespace that are modified
before the END BACKUP command is processed, do not
require block-level before and after images.
In case of hot backup scn at then time of starting backup is frozen in
datafile header , and is refreshed at the time of end backup .what happens
in RMAN ?
-ak
- Original Message -
To: Multiple recipients of list ORACLE-L [EMAIL PROTECTED]
Sent: Tuesday, April 01, 2003 12:43 PM
All,
11 matches
Mail list logo
