RE: RE: OCP Architecture question

[DENNIS WILLIAMS]

Ryan
   I have found the actual OCP questions to be clearer. I think it is very
hard to develop a good multiple choice exam. And these are tricky because
the objective is to test more than simple memorization. You need to
administer it to many people and find out which questions aren't clear or
are easily misinterpreted. Oracle has the resources to do that, an
individual author isn't. My claim is that if you have mastered the material
enough to point out flaws with your preparation materials, dude you're ready
to pass the exam.

Dennis Williams
DBA, 80%OCP, 100% DBA
Lifetouch, Inc.
[EMAIL PROTECTED] 


-Original Message-
Sent: Friday, August 15, 2003 6:29 AM
To: Multiple recipients of list ORACLE-L


yeah thats what i figured... but having these certifications are good for my
career. 

thanks. I figured it was a stupid question. 
> 
> From: "Cary Millsap" <[EMAIL PROTECTED]>
> Date: 2003/08/15 Fri AM 01:14:23 EDT
> To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]>
> Subject: RE: OCP Architecture question
> 
> With respect to evaluating answer number one, it's a bad question,
> because you have know way to know whether the context is supposed to be
> 
>  
> 
> a)   assume a fixed rollback segment size, but use fewer, larger
> extents; or
> 
> b)   make the rollback segment larger by using the same number of
> larger extents.
> 
>  
> 
> In context (a), #1 is a bad answer. In context (b), it's a better
> answer, but it's still poor.
> 
>  
> 
> The thing that really chaps me about stupid certification questions like
> this is that no answer among the choices listed is really the right
> thing for you to try to do, which is:
> 
>  
> 
> FIX THE QUERY THAT'S TAKING SO LONG TO RUN.
> 
>  
> 
> In other words, make queries run quickly enough that they don't require
> multiple-hour-old undo blocks to produce read-consistent results.
> 
>  
> 
> Jacking around with rollback segments is just a kludge that will produce
> results far inferior to what you can achieve by attacking the query
> problem at its root.
> 
>  
> 
> Cary Millsap
> Hotsos Enterprises, Ltd.
> http://www.hotsos.com
> 
> Upcoming events:
> - Hotsos Clinic   101 in
> Sydney
> - Hotsos Symposium 2004 
> March 7-10 Dallas
> - Visit www.hotsos.com for schedule details...
> 
> -Original Message-
> Tim Gorman
> Sent: Thursday, August 14, 2003 10:54 PM
> To: Multiple recipients of list ORACLE-L
> 
>  
> 
> They all allow the RBS to be bigger.  More space available for RBS
> roughly equals fewer ORA-01555, for most situations...
> 
> 
> 
> on 8/14/03 6:24 PM, Ryan at [EMAIL PROTECTED] wrote:
> 
> Im using the self test software and here is a question... I dont like
> the answers. Please tell me if Im wrong.
> 
> Which Three methods can be used to avoid snapshot too old errors. This
> is for the 8i test. 
> 
> 1. User larger extents
> 2. Increase MAXEXTENTS for existing rollback segments
> 3. Create rollback segments with higher optimal values
> 4. Create rollback segments iwth high minextents
> 5. Run long queries when transaction processing is high. 
> 
> Ruling out 5 is obvious. The test says its. 
> 
> 1,3,4
> 
> How does using large extents help this? What about a higher minextents
> value? 
> 
>  
> 
> 
> 
-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: DENNIS WILLIAMS
  INET: [EMAIL PROTECTED]

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Re: RE: OCP Architecture question

[rgaffuri]

i have all of it or 8i. this question was in architecture. I havent looked at the sql 
and pl/sql stuff since the cert test for that was a blowoff. 
> 
> From: "Ed Sherman" <[EMAIL PROTECTED]>
> Date: 2003/08/15 Fri AM 09:00:43 EDT
> To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]>
> Subject: RE: OCP Architecture question
> 
> Ryan,
> 
> I will research the answer but I have an urgent question.
> 
> Do you have SelfTest Software for the SQL and PL/SQL test or do you have the
> Architecure and Administration SelfTest Software?
> 
> Thanks,
> Ed
>   -Original Message-
>   From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of
> Ryan
>   Sent: Thursday, August 14, 2003 9:24 PM
>   To: Multiple recipients of list ORACLE-L
>   Subject: OCP Architecture question
> 
> 
>   Im using the self test software and here is a question... I dont like the
> answers. Please tell me if Im wrong.
> 
>   Which Three methods can be used to avoid snapshot too old errors. This is
> for the 8i test.
> 
>   1. User larger extents
>   2. Increase MAXEXTENTS for existing rollback segments
>   3. Create rollback segments with higher optimal values
>   4. Create rollback segments iwth high minextents
>   5. Run long queries when transaction processing is high.
> 
>   Ruling out 5 is obvious. The test says its.
> 
>   1,3,4
> 
>   How does using large extents help this? What about a higher minextents
> value?
> 
> 



Ryan,
 
I will 
research the answer but I have an urgent question.
 
Do you 
have SelfTest Software for the SQL and PL/SQL test or do you have the 
Architecure and Administration SelfTest Software?
 
Thanks,
Ed

  -Original Message-From: [EMAIL PROTECTED] 
  [mailto:[EMAIL PROTECTED]On Behalf Of RyanSent: 
  Thursday, August 14, 2003 9:24 PMTo: Multiple recipients of list 
  ORACLE-LSubject: OCP Architecture question
  Im using the self test software and here is a 
  question... I dont like the answers. Please tell me if Im wrong.
   
  Which Three methods can be used to avoid snapshot 
  too old errors. This is for the 8i test. 
   
  1. User larger extents
  2. Increase MAXEXTENTS for existing rollback 
  segments
  3. Create rollback segments with higher optimal 
  values
  4. Create rollback segments iwth high 
  minextents
  5. Run long queries when transaction processing 
  is high. 
   
  Ruling out 5 is obvious. The test says its. 
  
   
  1,3,4
   
  How does using large extents help this? What 
  about a higher minextents value? 

Re: RE: OCP Architecture question

[rgaffuri]

yeah thats what i figured... but having these certifications are good for my career. 

thanks. I figured it was a stupid question. 
> 
> From: "Cary Millsap" <[EMAIL PROTECTED]>
> Date: 2003/08/15 Fri AM 01:14:23 EDT
> To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]>
> Subject: RE: OCP Architecture question
> 
> With respect to evaluating answer number one, it's a bad question,
> because you have know way to know whether the context is supposed to be
> 
>  
> 
> a)   assume a fixed rollback segment size, but use fewer, larger
> extents; or
> 
> b)   make the rollback segment larger by using the same number of
> larger extents.
> 
>  
> 
> In context (a), #1 is a bad answer. In context (b), it's a better
> answer, but it's still poor.
> 
>  
> 
> The thing that really chaps me about stupid certification questions like
> this is that no answer among the choices listed is really the right
> thing for you to try to do, which is:
> 
>  
> 
> FIX THE QUERY THAT'S TAKING SO LONG TO RUN.
> 
>  
> 
> In other words, make queries run quickly enough that they don't require
> multiple-hour-old undo blocks to produce read-consistent results.
> 
>  
> 
> Jacking around with rollback segments is just a kludge that will produce
> results far inferior to what you can achieve by attacking the query
> problem at its root.
> 
>  
> 
> Cary Millsap
> Hotsos Enterprises, Ltd.
> http://www.hotsos.com
> 
> Upcoming events:
> - Hotsos Clinic   101 in
> Sydney
> - Hotsos Symposium 2004 
> March 7-10 Dallas
> - Visit www.hotsos.com for schedule details...
> 
> -Original Message-
> Tim Gorman
> Sent: Thursday, August 14, 2003 10:54 PM
> To: Multiple recipients of list ORACLE-L
> 
>  
> 
> They all allow the RBS to be bigger.  More space available for RBS
> roughly equals fewer ORA-01555, for most situations...
> 
> 
> 
> on 8/14/03 6:24 PM, Ryan at [EMAIL PROTECTED] wrote:
> 
> Im using the self test software and here is a question... I dont like
> the answers. Please tell me if Im wrong.
> 
> Which Three methods can be used to avoid snapshot too old errors. This
> is for the 8i test. 
> 
> 1. User larger extents
> 2. Increase MAXEXTENTS for existing rollback segments
> 3. Create rollback segments with higher optimal values
> 4. Create rollback segments iwth high minextents
> 5. Run long queries when transaction processing is high. 
> 
> Ruling out 5 is obvious. The test says its. 
> 
> 1,3,4
> 
> How does using large extents help this? What about a higher minextents
> value? 
> 
>  
> 
> 
> 
Title: Re: OCP Architecture question








With respect to evaluating answer number
one, it’s a bad question, because you have know way to know whether the
context is supposed to be

 

a)  
assume a fixed rollback
segment size, but use fewer, larger extents; or

b)  
make the rollback segment
larger by using the same number of larger extents.

 

In context (a), #1 is a bad answer. In
context (b), it’s a better answer, but it’s still poor.

 

The thing that really chaps me about stupid
certification questions like this is that no answer among the choices listed is
really the right thing for you to try to do, which is:

 

FIX THE QUERY THAT’S
TAKING SO LONG TO RUN.

 

In other words, make queries run quickly
enough that they don’t require multiple-hour-old undo blocks to produce
read-consistent results.

 

Jacking around with rollback segments is
just a kludge that will produce results far inferior to what you can achieve by
attacking the query problem at its root.

 



Cary Millsap
Hotsos Enterprises, Ltd.
http://www.hotsos.com

Upcoming events:
- Hotsos Clinic 101
in Sydney
- Hotsos Symposium 2004
March 7–10 Dallas
- Visit www.hotsos.com for schedule details...



-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Tim
Gorman
Sent: Thursday, August 14, 2003
10:54 PM
To: Multiple recipients of list
ORACLE-L
Subject: Re: OCP Architecture
question

 

They
all allow the RBS to be bigger.  More space available for RBS roughly
equals fewer ORA-01555, for most situations...



on 8/14/03 6:24 PM, Ryan at [EMAIL PROTECTED] wrote:

Im
using the self test software and here is a question... I dont like the answers.
Please tell me if Im wrong.

Which Three methods can be used to avoid snapshot too old errors. This
is for the 8i test. 

1. User larger extents
2. Increase MAXEXTENTS for existing rollback segments
3. Create rollback segments with higher optimal values
4. Create rollback segments iwth high minextents
5. Run long queries when transaction processing is high. 

Ruling out 5 is obvious. The test says its. 

1,3,4

How does using large extents help this? What about a higher minextents
value?