Re: block chg tracking
From: Jeremy Schneider <jeremy.schneider_at_ardentperf.com>
Date: Tue, 3 Feb 2015 10:18:03 -0500
Message-ID: <CA+fnDAb66D2Qp_RWDsa4Jt0njr3Rp-Y7EXPZw2UJZqUMVTJk+w_at_mail.gmail.com>
I've used BCT in a number of different environments, lots of 11g, and haven't seen problems. I have heard about the bugs in some older versions but personally haven't hit them (or they were already patched on environments I worked with). I haven't noticed significant overhead; in my opinion, any overhead that does exist along with the space used is very much worth the time and cpu and i/o savings during incremental backups.
Date: Tue, 3 Feb 2015 10:18:03 -0500
Message-ID: <CA+fnDAb66D2Qp_RWDsa4Jt0njr3Rp-Y7EXPZw2UJZqUMVTJk+w_at_mail.gmail.com>
I've used BCT in a number of different environments, lots of 11g, and haven't seen problems. I have heard about the bugs in some older versions but personally haven't hit them (or they were already patched on environments I worked with). I haven't noticed significant overhead; in my opinion, any overhead that does exist along with the space used is very much worth the time and cpu and i/o savings during incremental backups.
-J
-- http://about.me/jeremy_schneider On Mon, Feb 2, 2015 at 3:11 PM, Cee Pee <carlospena999_at_gmail.com> wrote:Received on Tue Feb 03 2015 - 16:18:03 CET
> List,
>
> I am considering turning on bct for one of our prod databases. Per manual
> there will be an increase in the resource usage during regular operations if
> bct is turned on. is there a way to quantify the increase. 10g/11g EE on
> AIX; not too many simultaneous users. Can 'block changes' and/or 'redo size'
> in awr over the standard period of operation help.
>
> CP.
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