Re: rman backup slow

Tracing is a good idea. You could also do a 10046 trace. I like to use logon triggers to enable 10046 traces.

 Robert G. Freeman
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________________________________
From: Jared Still <jkstill_at_gmail.com>
To: p4cldba_at_gmail.com
Cc: Mark W. Farnham <mwf_at_rsiz.com>; robertgfreeman_at_yahoo.com; ORACLE-L <oracle-l@freelists.org>
Sent: Sunday, February 1, 2009 4:09:07 PM
Subject: Re: rman backup slow



On Sun, Feb 1, 2009 at 2:10 PM, Prasad <p4cldba_at_gmail.com> wrote:

I did a level 12 trace . and here is the last 5% backup . I see there are so many sleeping for 10 sec wait  .not very sure how to proceed from here :) 


You may find RMAN tracing helpful.

There are 2 kinds that I am aware of, command line and channel.

The output from each is different.

It may or may not be helpful.

I've only used it occasionally myself, and have seen little published about it.

Command line:


$OH/bin/rman
… debug trace "trace file name"
Channel:

 
Trace
and debug from levels 1-6, possibly higher.
 
 
configure
channel
device
type 'sbt'
parms="BLKSIZE=1048576,SBT_LIBRARY=oracle.disksbt,ENV=(BACKUP_DIR=/mnt/rsysdevdb/bkup_2/ts03)"
maxopenfiles
4
trace 6 debug 6;
 
 
allocate
channel
device
type 'sbt'
parms="BLKSIZE=1048576,SBT_LIBRARY=oracle.disksbt,ENV=(BACKUP_DIR=/mnt/rsysdevdb/bkup_2/ts03)"
maxopenfiles
4
trace 6 debug 6;
Jared

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