birt code 128

birt code 128

birt code 128

birt code 128

birt code 128

birt code 128,
birt code 128,

birt code 128,
birt code 128,
birt code 128,

birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,

birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
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birt code 128,

birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
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birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
birt code 128,
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birt code 128,

Every Oracle instance makes use of a set of initialization parameters that dictate database limits such as the number of users, specify the names and locations of key files and directories, and optimize performance by setting the size of key resources such as memory. Before you jump into the details of Oracle database creation, it s important to familiarize yourself with the important Oracle initialization parameters and how Oracle uses them.

Oracle uses a parameter file to store the initialization parameters and their settings for an instance. You can use either of the following two types of parameter files: Server parameter file (SPFILE): A binary file that contains the initialization parameters Initialization parameter file (PFILE): A text file that contains a list of all initialization parameters The key difference between these two types of files is that with an SPFILE, you have the option of making any changes to the initialization parameters while an instance is running persist across an

instance shutdown. You can t do this using the PFILE, since any dynamic changes that are also not recorded in that file will not persist after you restart your instance. Note that I use the filename init.ora to refer to the PFILE, as the standard name for the PFILE is initdb_name.ora. After I create the database, I ll show you how to create the SPFILE from the init.ora file. The initialization parameter file was traditionally the only type of file in which you could store these initialization parameter values. An initialization parameter file is a text file that you can edit like any other text file. By default, this file is located in the $ORACLE_HOME/dbs directory (though you can store it in any place that s helpful to you). If you store the configuration file in a location other than the default, you must specify the complete location when you start the instance. If the initialization parameter filename and the location follow the default conventions, you don t have to specify the name or location of the file at startup.

Public Sub New(ByVal theHostAddress As String, _rxTimeout = theRxTimeout _blockedRequests = New RequestQueue

The initialization files are used not only to create the database itself, but also each time you start an Oracle instance. You can tune several aspects of a database s performance by modifying parameter values. You can change some of these parameters dynamically while the instance is running, but for other changes to take effect, you ll have to restart the instance.

The initialization parameter file includes parameters that will help tune the instance, that set limits on certain database resources, and that specify the names and locations of important files. It also contains parameters that affect database performance, such as those specifying the amount of memory allocated to Oracle. Once you create the initialization file, you can start the instance by using the file in your database startup commands. You can dynamically modify several important configuration parameters while the instance is running. The dynamic changes are made in a SQL*Plus session, without changing the init.ora file itself. You can make an instance-wide change by using the ALTER SYSTEM statement and a sessionwide change by using the ALTER SESSION statement. These modifications won t be permanent, however; as soon as you shut down the database, the changes are gone and you re back to the values hard-coded in the init.ora file. To make any configuration parameter changes permanent, you must edit the initialization parameter (init.ora) file. If you want to make the dynamic changes permanent, so that the parameter is automatically updated and the database uses these new values upon restarting, you should use a server parameter file. The SPFILE is also an initialization file, but you can t make changes to it directly because it s a binary file, not a text file. Using the SPFILE to manage your instance provides several benefits, as you ll see in the Using a Server Parameter File section later in the chapter. Oracle recommends that you use the SPFILE because of the advantages it offers.