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Update Your Oracle Knowledge . . .: April 2009
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Update Your Oracle Knowledge . . . Oracle Troubleshooting tips and secrets. More than any other area of Oracle, teaching Oracle troubleshooting is extremely challenging. Troubleshooting is largely an on-the-job skill, and no amount of book learning can match the skill of an experienced Oracle troubleshooter. Oracle has become the world's most sophisticated and flexible database, and the sheer complexity of Oracle makes it very difficult to troubleshoot. So, how can you learn Oracle troubleshooting skills?
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Update Your Oracle Knowledge . . .: January 2009
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Update Your Oracle Knowledge . . . One of the most effective tools for forecasting Oracle performance is the time-series data in STATSPACK and the Automatic Workload Repository in Oracle 10g. Using this time-series information, the Oracle DBA can identify hidden performance trends and forecast Oracle Performance problems before they cripple the database. Read more about forecasting Oracle performance here:. Http:/ oracle-tips.c.topica.com/maamFPyabMZcHbLGJrib/. Cost Control: Inside the Oracle Optimizer.
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Update Your Oracle Knowledge . . .: December 2009
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Update Your Oracle Knowledge . . . Hypercharge SQL Performance with Function-based indexing. I am now one year into writing my next book "Oracle SQL Tuning: The Definitive Reference", and I have had an epiphany about SQL tuning that all Oracle professionals should know. The vast majority of SQL tuning can be avoided by following a few simple rules:. Carefully formulate the SQL syntax to conform to standard practices. Always use complete optimizer statistics (using dbms stats). Since the earliest days of ...
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Update Your Oracle Knowledge . . .: July 2009
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Update Your Oracle Knowledge . . . How to find the fastest execution plans. Learn SQL tuning tricks. While many Oracle professionals learned about the relational model and SQL in college, they make the common mistake of thinking that SQL tuning is governed by well-defined decision rules. Oracle's SQL is only one of a host of different SQL optimizer implementations, and, like any other vendor implementation, there are many nuances and tricks to SQL tuning. Auditing changes to init.ora parameters (via ...
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Update Your Oracle Knowledge . . .: May 2009
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Update Your Oracle Knowledge . . . Indexing.The Good, The Bad, and the Ugly. Indexes are the easiest way to improve the performance of long running queries with full table scans. Indexes allow the database to search the smaller indexes as opposed to searching the large table. This can improve not only the SELECT queries, but also UPDATEs and DELETEs. Learn secrets for finding balance when index planning:. Http:/ oracle-tips.c.topica.com/maam5JAabQj2zbLGJrib/. Can you see your Oracle bottlenecks? Predicti...
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Update Your Oracle Knowledge . . .: October 2009
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Update Your Oracle Knowledge . . . How hardware advances drive Oracle DBMS advances. It is well known that hardware advances always precede advances in software technology, and this is especially true for Oracle. As hardware becomes faster and cheaper, Oracle professionals change the ways in which we process information. Changes in hardware affect the way we design databases, the way we implement database and most importantly, the way that we tune databases. See here how hardware advances will change the...
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Update Your Oracle Knowledge . . .: January 2010
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Update Your Oracle Knowledge . . . Oracle and technological feasibility. Technological feasibility is a problem resulting from the public at-large’s gross misunderstanding of the capability of modern computers. Back in the 1980's, many people assumed that computers like the HAL-9000, from the movie 2001: A Space Odyssey, really existed, and it was very difficult for practicing computer scientists to explain the real world limitations of the hardware of the day. Artificial intelligence: Even with the adva...
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Update Your Oracle Knowledge . . .: July 2008
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Update Your Oracle Knowledge . . . PL/SQL features by release. A Mini-History of Oracle and PL/SQL. This chapter answers two questions: where did PL/SQL come from and why is it the best database development language ever developed? In the late 70s, around the time Ingres was getting started at UC Berkeley, three guys working on a contract for the CIA got together and started a company called Relational Software, Inc. In the early 1980s, the company was renamed Oracle Corporation. That would just be t...
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Update Your Oracle Knowledge . . .: September 2008
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Update Your Oracle Knowledge . . . Sending e-mail from Oracle. Sending e-mail from Oracle. Also, Stephen Rea suggests his e-mail package, which was derived from his and other's work, and now allows attachments from Oracle LOB objects (CLOB, BLOB), in addition to text and binary file attachments. Step 1: Run the Jserver code for PL/SQL e-mail. You must install the utl smtp package and Jserver by running the following DBA scripts as SYSDBA (SYS user):. SQL @$ORACLE HOME/javavm/install/initjvm.sql. UTL SMTP...
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Update Your Oracle Knowledge . . .: October 2008
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Update Your Oracle Knowledge . . . How to become an Oracle DBA. Every year, young computer professionals leave the hallowed halls and ivory towers of college and survey the landscape for computer jobs. They look at the salary surveys and drool at the prospect of earning up to $250k per year as a DBA. Many of them don't know what a DBA does, but they sure like the money. Since I've been a DBA for 25 years I'm often asked "How do I become a DBA? What classes should I take to prepare for a job as a DBA?