 | | | {Disarmed} Role transition | {Disarmed} Role transition 2007-10-02 - By Mark W. Farnham
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From: oracle-l-bounce@(protected) [mailto:oracle-l-bounce@(protected)]
On Behalf Of Senthil Subramanian
Sent: Monday, October 01, 2007 9:56 PM
To: Carel-Jan Engel
Cc: oracle-l@(protected)
Subject: Re: {Disarmed} Role transition
Hi Carel-Jan,
<snip>Now, we have a one-off requirement to switch roles between primary and
the physical standby for couple of days.<snip>
Pardon me, but I think what Carel-Jan was trying to emphasize is that there
is no such thing as a one-off requirement to switch between primary and
standby roles.
If the ability to "fail-over" and "fail-back" is not routinely tested and
practiced, then when an actual need arises you cannot be reasonably certain
it will work, you will not know reasonable bounds on how long it will take,
and you will be at risk to an increased window of accumulated software
change and functionality since your last previous test. This leads to all
manner of unfortunate adventures such as new client applications that were
not integrated with the mechanism to point production connections to the
"standby".
In a real business continuation situation, the situation cannot be "I think
I'd better do a test."
Regards,
mwf
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
oracle-l-bounce@(protected) [mailto:oracle-l-bounce@(protected)] <b><span
style='font-weight:bold'>On Behalf Of </span></b>Senthil Subramanian<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, October 01, 2007
9:56 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Carel-Jan Engel<br>
<b><span style='font-weight:bold'>Cc:</span></b> oracle-l@(protected)<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: {Disarmed} Role
transition</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>Hi Carel-Jan,<br>
<br>
<font color=navy><span style='color:navy'><snip></span></font>Now, we
have a one-off requirement to switch roles between primary and the physical
standby for couple of days.<font color=navy><span style='color:navy'><snip
></span></font><br>
<br>
<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Pardon
me, but I think what Carel-Jan was trying to emphasize is that there is no such
thing as a one-off requirement to switch between primary and standby roles.<o:p
></o:p></span></font></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>If the
ability to “fail-over” and “fail-back” is not routinely
tested and practiced, then when an actual need arises you cannot be reasonably
certain it will work, you will not know reasonable bounds on how long it will
take, and you will be at risk to an increased window of accumulated software
change and functionality since your last previous test. This leads to all
manner of unfortunate adventures such as new client applications that were not
integrated with the mechanism to point production connections to the “
;standby”.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'>In a real business continuation situation,
the situation cannot be “I think I’d better do a test.”<o:p><
/o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Regards,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>mwf<o:p></o:p></span></font></p>
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