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Blogs
Toad and Database Commentaries |
Toad World blogs are a mix of insightful how-tos from Quest experts as well as their commentary on experiences with new database technologies. Have some views of your own to share? Post your comments! Note: Comments are restricted to registered Toad World users.
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Author: |
MikeA |
Created: |
Wednesday, October 18, 2006 4:54 PM |
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Providing tips, techniques and insight into management and tuning issues affecting your database systems. |
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Sizing Tables in Oracle |
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MikeA
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Friday, March 16, 2007 9:22 AM
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On one of my first Oracle consulting assignments I had to come up with the sizing estimates for tables for a data warehouse for a telecommunications company in California. At that time, (1994) there were few products that provided sizing al ...
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How is Oracle Like Scuba Diving? |
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MikeA
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Wednesday, February 21, 2007 4:08 PM
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One of my favorite things to do (when I am not tuning and managing Oracle databases) is to don a scuba tank, mask, and exposure suit and slip beneath the waters surface. For a long time I wondered how to reconcile these two interests and then it came to me.
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Tuning UNDO Segments |
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MikeA
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Monday, January 29, 2007 9:03 PM
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Of the many databases I have examined on releases 9i and 10g, most are using the automatic undo management feature and on the whole it does a pretty good job of managing the undo segments (for you other old timers, rollback segments).
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Hidden Costs |
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MikeA
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Monday, January 08, 2007 9:40 AM
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Caveat Emptor (Buyer beware) has been around since, well, since time began. Whether barter or cash, when doing a deal the buyer has to careful, this is especially true in the complex area of software licensing.
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Tailoring Session Parameters |
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MikeA
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Tuesday, December 26, 2006 5:03 PM
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Many times I am asked how to tailor the initialization parameters for a specific process or user. Essentially the easiest way to set custom initialization parameters for a particular session is to use the ALTER SESSION SET command in a logon trigger keyed to a specific schema or schemas. For example, say we had an application where we wanted to set ...
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Removing 10g Grid Control |
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MikeA
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Thursday, December 14, 2006 12:36 PM
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I recently went on a very nice vacation to Curacao. Before I went on vacation the Oracle 10g Grid Control (10.2.0.2) I had installed on my Laptop for monitoring my home office systems was working. I took my laptop with me to allow offload of pictures from my cameras and to track email while I was away. When I returned home and hooked my laptop back up to my home network Grid Control wouldn’t start and of course ...
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Watching Your ASMM in Oracle10g |
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MikeA
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Monday, November 27, 2006 8:44 AM
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Oracle’s Oracle10g requires more memory than was ever required before. If you utilize any of the new features such as automatic storage management (ASM) and automatic shared memory management (ASMM) then you really need to pay attention to what memory is doing in 10g.
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The Brave New World of Oracle Management |
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MikeA
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Wednesday, November 15, 2006 3:50 PM
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I remember reading “Brave New World” when I was in high school, we needn’t mention the year. I was fascinated by the system described in the book that seemed so logical on the surface but needed so many props underneath to keep it going. It reminds me at times of some of the Oracle management that goes on these days. ...
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Why Can’t Johnny Tune? |
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MikeA
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Wednesday, November 08, 2006 1:46 PM
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I often see DBAs and developers who don’t know the first thing about tuning SQL. They ask “Why do I need to know that, can’t Oracle tune itself?” The truth of the matter is that Oracle is, for the most part, able to do a pretty decent job of tuning itself if it is given enough information and the queries or tuning tas ...
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Are DBA’s Obsolete? |
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MikeA
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Wednesday, November 01, 2006 3:30 PM
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With each new release of a database, be it Oracle or one of their competitors, we hear the cry that this release will make DBAs as we know them obsolete. We hear again and again how this automated feature set or that new GUI interface will automate the DBA job. So far, all of these claims of DBA obsolescence have been for naught, to mis-quote Samual Clements “The reports of the DBAs death are greatly ex ...
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Changes in SQL Tuning |
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MikeA
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Wednesday, October 18, 2006 4:54 PM
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When I started working with Oracle in 1990 there weren’t many SQL tuning tools available. At most you had the Oracle supplied tools which allowed you to capture an explain plan and minimal tracing. Most SQL tuning consisted of either encouragin ...
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