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Oracle Database Preinstallation Requirements. Configuring Disk Storage for Oracle Data Files and Recovery Files. This section describes the storage options for storing Oracle data files and, optionally, Oracle database recovery files.
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After you choose the storage method that you want to use for each file type, use the following sections to configure the required storage: Note. You do not have to use the same storage option for each type of file. Choosing a Storage Option for Oracle Data Files. If you want to create a database during the installation, you must choose one of the following storage options for the data files: File system.
Automatic Storage Management. Choosing a Storage Option for Oracle Database Recovery Files. If you want to enable automated backups during the installation, you must choose one of the following storage options for recovery files (the flash recovery area): File system. Automatic Storage Management.
The storage option that you choose for recovery files can be the same as or different to the option you choose for the data files. Configuring Disk Storage. For more information about these options, see the . For information about how to configure disk storage before you start the installation, see one of the following sections depending on your choice: 2.
Creating Directories for Oracle Data Files or Recovery Files. If you decide to place the Oracle database or recovery files on a file system, use the following guidelines when deciding where to place them: 2. Guidelines for Placing Oracle Data Files on a File System. You can choose either a single file system or more than one file system to store the data files: If you want to use a single file system, choose a file system on a physical device that is dedicated to the database. For best performance and reliability, choose a redundant array of independent disks (RAID) device or a logical volume on more than one physical device and implement the stripe and mirror everything (SAME) methodology.
If you want to use more than one file system, choose file systems on separate physical devices that are dedicated to the database. Select this method to distribute physical I/O and create separate control files on different devices for increased reliability. It also enables full implementation of the Optimal Flexible Architecture guidelines described in Appendix B, . You must choose either the Advanced database creation option or the Custom installation type during the installation to implement this method. If you intend to create a preconfigured database during the installation, the file system (or file systems) that you choose must have at least 9.
MB of free disk space. For production databases, you must estimate the disk space requirement depending how you plan to use database. For optimum performance, the file systems that you choose should be on physical devices that are used only by the database. The default location suggested by Oracle Universal Installer for the database file directory is a subdirectory of the Oracle base directory.
However, this default location is not recommended for production databases. Guidelines for Placing Oracle Recovery Files on a File System.
Note. You must choose a location for recovery files only if you intend to enable automated backups during the installation. If you place the Oracle recovery files on a file system, use the following guidelines when deciding where to place them: To prevent disk failure from making both the data files and the recovery files unavailable, place the recovery files in a file system on a different physical disk from the data files. Marine Aquarium 3 Keycode Cracked. Note. Alternatively, for both data files and recovery files, use an Automatic Storage Management disk group. The file system that you choose should have at least 2 GB of free disk space. The disk space requirement is the default disk quota configured for the flash recovery area (specified by the DB. Jitbit Macro Recorder V5 5 5 Serial. After you create the database, you can also use Oracle Enterprise Manager Grid Control or Database Control to specify a different value.
The default location suggested by Oracle Universal Installer for the database file directory is a subdirectory of the Oracle base directory. However, this default location is not recommended for production databases. Creating Required Directories.
Note. You must complete this procedure only if you want to place the Oracle database or recovery files on a separate file system from the Oracle base directory. To create directories for the Oracle database or recovery files on separate file systems from the Oracle base directory, follow these steps: Use Windows Explorer to determine the free disk space on the file system. From the display, identify the file systems that you want to use: File Type. File System Requirements. Data files. Choose either.
A single file system with at least 9. MB of free disk space. Two or more file systems with at least 9.
MB of free disk space in total. Recovery files. Choose a file system with at least 2 GB of free disk space. If you are using the same file system for more than one type of file, add the disk space requirements for each type to determine the total disk space requirement. Note the names of the directories for the file systems that you identified. If you also want to use Automatic Storage Management, see . Otherwise see the .
To complete this task, follow these steps: Determine whether you want to use Automatic Storage Management for Oracle data files, recovery files, or both. Note. You do not have to use the same storage mechanism for data file and recovery files. One storage mechanism can use the file system while the other uses Automatic Storage Management. If you plan to use Automatic Storage Management for both data files and recovery files, you should create separate Automatic Storage Management disk groups for the data files and the recovery files.
If you plan to enable automated backups during the installation, you can choose Automatic Storage Management as the storage mechanism for recovery files by specifying an Automatic Storage Management disk group for the flash recovery area. Depending how you choose to create a database during the installation, you have the following options: If you select an installation method that runs Oracle Database Configuration Assistant in interactive mode, by choosing the Advanced database configuration option for example, then you can decide whether you want to use the same Automatic Storage Management disk group for data files and recovery files, or you can choose to use different disk groups for each file type. Ideally, you should create separate Automatic Storage Management disk groups for data files and recovery files.
The same choice is available to you if you use Oracle Database Configuration Assistant after the installation to create a database. If you select an installation type that runs Oracle Database Configuration Assistant in noninteractive mode, then you must use the same Automatic Storage Management disk group for data files and recovery files. Decide on the Automatic Storage Management redundancy level that you want to use for each Automatic Storage Management disk group you will create. The redundancy level that you choose for the Automatic Storage Management disk group determines how Automatic Storage Management mirrors files in the disk group and determines the number of disks and amount of disk space that you require. The redundancy levels are as follows: External redundancy.
An external redundancy disk group requires a minimum of one disk device. The effective disk space in an external redundancy disk group is the sum of the disk space in all of its devices. Because Automatic Storage Management does not mirror data in an external redundancy disk group, Oracle recommends that you use only RAID or similar devices that provide their own data protection mechanisms as disk devices in this type of disk group.
Normal redundancy.