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RMAN Backup Time

How RMAN improves backup time?
Asked by: shanthiavari | Member Since May-2008 | Asked on: Jul 22nd, 2008

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Showing Answers 1 - 6 of 6 Answers
kalyan_ck

Answered On : Jul 26th, 2008

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RMAN backup time consumption is very less than compared to regular online backup, as RMAN copies only modified blocks

  
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thakur_rakeshb

Answered On : Dec 17th, 2009

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Add channel to improve the performance of rman, but it create session on DB and I/O on disk will increase, so configure channel at proper number.

  
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Ravikumar

Answered On : Sep 7th, 2011

Add channel to improve the Rman backup time

  
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Ajay Chaudhary

Answered On : Oct 12th, 2011

Oracle database help us to reduce time for taking backup using followings

1) Oracle performs BLOCKlevel backup.
2) DBA can allocate channels which will start the backup activity in PARALLEL, but we need to ensure that not too many channels have been allocated. Number of allocated channel should not be more than number of CPU.

  
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atif waqar

Answered On : Mar 31st, 2012

In 10g You can minimize backup time By "duration 00:30 minimize time;"

run{backup format /complete path duration 00:30 minimize time database}

ADD CHANNELS FOR IMPROVE PERFORMANCE ...

  
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gzhang1970

Answered On : May 6th, 2012

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Run rman BACKUP INCREMENTAL LEVEL 1 FOR RECOVER OF COPY WITH TAG incr_update DATABASE;
RECOVER COPY OF DATABASE WITH TAG incr_update;

If this is the first time to run it will create an incremental 0 backup copy of database and then subsequent backup will be incremental 1 and then recover the image copy by using this incremental 1 backup. It this way, we only backup 500Gb DB once and level 0 copy of database get forwarded each time.

  
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