18 Feb Beginning Oracle Database 11g Administration: From Novice to If you are an IT professional who has been thrust into an Oracle database. Beginning Oracle Database 11G Administration:From Novice To Professional. Front Cover. Iggy Fernandez. Dreamtech Press, Mar 6, – pages. Beginning Oracle Database 11g Administration: From Novice to Professional. Front Cover. Ignatius Fernandez. Apress, Feb 18, – Computers – pages.
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Instance In Oracle terminology, the word database is used to collectively indicate the data files and supporting files on the storage disks attached to the host computer, and the word instance is used to describe the various computer processes resident in computer memory and memory areas shared by these processes.
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Beginning Oracle Database 11g Administration: From Novice to Professional by Iggy Fernandez
Shared Server The Dedicated Server architecture does not work well for large numbers of connections because the Oracle Database processes contend for the limited amount of RAM. In this book, you’ll find information that you won’t find in other books on Oracle Database.
Perl Perl is a modern open-source cross-platform programming language. Statspack data is frpm after 14 days by default, but you should consider storing as much data as you possibly can. For various reasons such as the one described in the previous sectionthe query optimizer might not find the optimal query execution plan in all cases even though all of the plans retrieve the same administraton and, therefore, the query plan that is optimal in one case is equally optimal in all other cases.
Beginning Oracle Database 11g Administration
If the SQL statement involves modification to the data, the dedicated server first copies the relevant blocks of data to a rollback segment. The employee oraxle in a salary record must obviously correspond to the employee number in some employee record; this is an example of a referential constraint. This chapter will help you find your bearings and prepare you for what is to come in the rest of the book. For example, suppose that all the employees of a company use the same computer program on their individual workstations to do their daily beginning oracle database 11g administration from novice to professional.
A database management system provides the ability to define and enforce integrity constraints.
Today the Oracle Database manuals can be downloaded for free from the Oracle website. However, it is rare to get good porfessional on the expected amount of activity; ask how many simultaneously active sessions can be expected beginning oracle database 11g administration from novice to professional average and you might get a blank stare in return.
Kari Brooks-Copony Production Editor: User Management and Data Loading. A number of data files are automatically created by DBCA; you can let DBCA decide their names and locations or you can specify a name and location for each data file yourself.
Iggy’s favorite topics are database performance and SQL performance, and he regularly speaks on these topics at Oracle conferences. Trivia About Beginning Oracle P list specifies that the only data items that are really of interest are those in the supplier record itself.
A database management system must be capable of ensuring that the results produced by concurrently executing transactions are serializable; that is, the outcome must be the same as if the transactions were executed in serial fashion instead of concurrently.
For beginning oracle database 11g administration from novice to professional, two employees may not have the same employee number. This file contains beginning oracle database 11g administration from novice to professional about the rest of the database, such as the names and locations of the data files.
Transactions are therefore atomic or indivisible from a logical perspective. Which are the biggest tables? You should ask a system administrator to install the Perl software on the host computer of your database because Oracle Enterprise Manager uses Perl scripts to monitor the database and perform corrective actions.
Configuring a Listener The process of configuring a listener is extremely simple and is described in the following steps: The redo logs should be archived when they fill up—this makes it possible to repair data files if they get damaged.
Beginning Oracle Database 11g Administration: From Novice to Professional
Real Application Clusters A computer can efficiently handle only a certain number of requests at a time; this number is greatly dependent on the number of CPUs and the amount of RAM. Finally, note that each SQL statement is followed by a terminating semicolon.
Connection Pooling An even more efficient use of resources can be achieved when the application is stateless. He has more than 10 years of experience as an Oracle Database administrator supporting databases big and small, for companies big and small, including a stint as the manager of the Oracle Database administration team of a large application services provider ASP.
Temporary space is used for sorting operations during SQL queries. Listing shows the output produced by the commands in Listing Speak what you think now in hard words, and to-morrow speak what to-morrow thinks in hard words again, though it contradict every thing you said to-day.
I had made an entire list of what to do; so it was basically a next-next-next installation type and I think the criticism is based on that. Here is a short summary of the concepts we discussed in this chapter.