| Comparing data structures [message #283549] |
Tue, 27 November 2007 07:58  |
kathirmect
Messages: 3
Registered: November 2007
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Junior Member |
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Hello,
i am currently in a project involving standardization of SCADA. For this we have two different oracle servers. Is there any
possiblility to compare the 2 data structures. THe main reason to compare the data structure is to get a picture on which one
is better for us. Since i´m a control engineer, i don´t have any idea about DBMS. I need an effective solution to find the most efficient DB by comparing the existing ones.
I would be happy if someone could help me on this by suggesting some tools or books.
Thankyou,
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| Re: Comparing data structures [message #283565 is a reply to message #283549] |
Tue, 27 November 2007 08:32  |
kathirmect
Messages: 3
Registered: November 2007
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Junior Member |
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THanks a lot for your quick response.
For me efficiency means, i would prefer a server which requires less maintenance. So how feasible it is, if i use a SQL query
tool or a compare tool. I need to know whether i can first of all get a solution using such tools. You are absolutely right
on the fact dealing with the factors i´m measuring and calibrating. Yes, the DB has all the information related to the
process and parameters. As i mentioned earlier i want to figure out the dissimilarities in either DB and want to make an analysis with this solution.
Thanks once again,
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| Re: Comparing data structures [message #283584 is a reply to message #283565] |
Tue, 27 November 2007 09:39 |
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Mahesh Rajendran
Messages: 10708
Registered: March 2002
Location: oracleDocoVille
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Senior Member
Account Moderator |
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This may be a little confusing to you as we speak different literature.
What I am trying to say is, you cannot grade a database just by comparing its structure/design.
Sure, you can see if they adhere to some standards/best practices but cannot derive its efficiency based on settings.
Usually a database is tuned to the requirement.
For example, a database with a smaller block size is not essentially inferior to a database with larger block size and vice versa.
As it been pointed already, there are a lot of schema level/ Database level comparison tools which could
compare and report you the gory details.
I believe you are looking into a simulation/load testing tool (or may be I overlooked). In these tools,
you set the same scenarios(n users, x-y load, response time for a particular set of predefined operations etc) for each database, do the simulation, record the activities and compare how the database responded.
>> DB has all the information related to the process and parameters
I suppose, you are using an Oracle RTDB somewhere in your master station.
Depending on the complexity of the operations, i would start looking into
Risk Analysis,some load testing and scalability.
You can compare the database settings using the above said/any tool.
If you find there would be a bottleneck in performance in specific area, you can look further.
>>Yes, the DB has all the information related to the
process and parameters.
If you can identify which database tables hold the process information, you can write a simple query to list the differences or use the GUI tool.
[Updated on: Tue, 27 November 2007 09:41] Report message to a moderator |
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| Re: Comparing data structures [message #283590 is a reply to message #283584] |
Tue, 27 November 2007 10:08 |
kathirmect
Messages: 3
Registered: November 2007
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Junior Member |
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Well, thanks a lot for your time.Now, I got a very good idea but will have to gather more information on this. Because i´m just a beginner to these stuffs. I will come back to you if i get stuck somewhere.
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