Re: Oracle 11g is it possible to set adaptive threshold for repeating AWR base lines
From: zigzagdna <zigzagdna_at_yahoo.com>
Date: Fri, 1 Jan 2010 08:03:51 -0800 (PST)
Message-ID: <c62130b7-ff73-4f7e-ab52-fa525aa7bc02_at_u41g2000yqe.googlegroups.com>
On Jan 1, 10:20 am, ddf <orat..._at_msn.com> wrote:
> On Dec 31 2009, 2:41 pm, zigzagdna <zigzag..._at_yahoo.com> wrote:
>
>
>
>
>
> > I am on Oracle 11g Release 1 (11.1.0.7.1). Oracle 11g provides
> > adapting threshold for SYSTEM_MOVING_WINDOW AWR Baseline. However, I
> > want to set these threshold for my own AWR Baseline.
>
> > I defined a repeating AWR Base Line. It is not clear reading the
> > documentation whether repeating AWR base line works like
> > SYSTEM_MOVING_WINDOW. i.e., metrics of today Monday at 1:00PM will be
> > compared with last week’s metric (last Monday at 1:00PM). If not what
> > is the purpose of repeating AWR baseline.
>
> > I went to Baseline Metrics Threshold, I set thresholds on Average
> > Active Session using Significance Levels, it let me specify
> > significance for Critical and Warning, but I do not find Threshold to
> > be Adaptive. If I chose same metric and set same significance values
> > for SYSTEM_MOVING_WINDOW adaptive threshold is set.
>
> > So I am confused on the purpose of repeating AWR baseline.
>
> A repeating baseline is recalculated at the specified interval for the
> specified window. For example you set a repeating baseline for
> Tuesdays between 6:00 AM and 8:30 AM. So every Tuesday at 6:00 AM a
> new AWR baseline is generated from statistics and data gathered until
> 8:30 AM that morning. You now have a current baseline with which to
> compare the rest of the week's workload statistics and data. Each
> Tuesday you get a NEW baseline. You really should read here:
>
> http://download.oracle.com/docs/cd/B28359_01/server.111/b28275/tdppt_...
>
> as it explains how repeating baselines are generated.
>
> David Fitzjarrell- Hide quoted text -
>
> - Show quoted text -
Date: Fri, 1 Jan 2010 08:03:51 -0800 (PST)
Message-ID: <c62130b7-ff73-4f7e-ab52-fa525aa7bc02_at_u41g2000yqe.googlegroups.com>
On Jan 1, 10:20 am, ddf <orat..._at_msn.com> wrote:
> On Dec 31 2009, 2:41 pm, zigzagdna <zigzag..._at_yahoo.com> wrote:
>
>
>
>
>
> > I am on Oracle 11g Release 1 (11.1.0.7.1). Oracle 11g provides
> > adapting threshold for SYSTEM_MOVING_WINDOW AWR Baseline. However, I
> > want to set these threshold for my own AWR Baseline.
>
> > I defined a repeating AWR Base Line. It is not clear reading the
> > documentation whether repeating AWR base line works like
> > SYSTEM_MOVING_WINDOW. i.e., metrics of today Monday at 1:00PM will be
> > compared with last week’s metric (last Monday at 1:00PM). If not what
> > is the purpose of repeating AWR baseline.
>
> > I went to Baseline Metrics Threshold, I set thresholds on Average
> > Active Session using Significance Levels, it let me specify
> > significance for Critical and Warning, but I do not find Threshold to
> > be Adaptive. If I chose same metric and set same significance values
> > for SYSTEM_MOVING_WINDOW adaptive threshold is set.
>
> > So I am confused on the purpose of repeating AWR baseline.
>
> A repeating baseline is recalculated at the specified interval for the
> specified window. For example you set a repeating baseline for
> Tuesdays between 6:00 AM and 8:30 AM. So every Tuesday at 6:00 AM a
> new AWR baseline is generated from statistics and data gathered until
> 8:30 AM that morning. You now have a current baseline with which to
> compare the rest of the week's workload statistics and data. Each
> Tuesday you get a NEW baseline. You really should read here:
>
> http://download.oracle.com/docs/cd/B28359_01/server.111/b28275/tdppt_...
>
> as it explains how repeating baselines are generated.
>
> David Fitzjarrell- Hide quoted text -
>
> - Show quoted text -
Thanks, I had read the documentation. Why then there are no adaptive threshholds for repeating baseline (in datbase control, adaptive threshold remains blank unlike SYSTEM_MOVING_WINDOW). Received on Fri Jan 01 2010 - 10:03:51 CST