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About Oracle ASM Files → Allocation Units Every Oracle ASM disk is divided into allocation units (AU). An allocation unit is … allocation units. An Oracle ASM file consists of one or more file extents. When you create a disk group … , you can set the Oracle ASM allocation unit size with the AU_SIZE disk group attribute. The values … \"Disk Group Compatibility\".
Oracle ASM and Multipathing → of data availability through automatic failover and failback. Although Oracle ASM is not designed … with multipathing functionality, Oracle ASM does operate with multipathing technologies. Multipathing … storage products With Oracle ASM, you can ensure the discovery of a multipath disk by setting the … it and provides load balancing
About Oracle ASM Instances → An Oracle ASM instance is built on the same technology as an Oracle Database instance. An Oracle … ASM instance has a System Global Area (SGA) and background processes that are similar to those of … Oracle Database. However, because Oracle ASM performs fewer tasks than a database, an Oracle ASM SGA is … much smaller
Oracle ASM Disk Discovery → Disk discovery is the mechanism used to find the operating system names for disks Oracle ASM can
Inside /sys/asm → The Oracle ASM virtual folder is created by default during XML DB installation. If the database is … not configured to use Oracle ASM, the folder is empty and no operations are permitted on it. The … Oracle ASM virtual folder contains folders and subfolders that follow the hierarchy defined by the … structure of an Oracle ASM
Managing Oracle ASM Instances → This section describes how to administer Oracle ASM instances under the following topics … : Administering Oracle ASM Instances with Server Control Utility Using Oracle Restart Starting Up an Oracle ASM … Instance Shutting Down an Oracle ASM Instance Upgrading an Oracle ASM Instance in an Oracle Restart
Understanding Oracle ASM Concepts → This section describes concepts for the key Oracle ASM components and it contains the following … topics: About Oracle ASM Instances About Oracle ASM Disk Groups About Mirroring and Failure Groups … About Oracle ASM Disks About Oracle ASM Files For information about preparing your storage environment
About Oracle ASM Filenames → Every file created in Oracle ASM is provided a filename generated by Oracle Managed Files, known as … a complete path name in the Oracle ASM file system. An example of a fully qualified filename is … (read or retrieve) an Oracle ASM file. You can also use other abbreviated filename formats, such as an … alias Oracle ASM
About Oracle ASM Disks → Oracle ASM disks are the storage devices that are provisioned to Oracle ASM disk groups. Examples … of Oracle ASM disks include: A disk or partition from a storage array An entire disk or the … can assign an Oracle ASM disk name or Oracle ASM assigns the Oracle ASM disk name automatically.
Oracle ASM Storage Limits → Oracle ASM provides near unlimited capacity for future growth, but does have some storage limits … . For example, Oracle ASM has the following limits on the number of disk groups, disks, and files: 63 … disk groups in a storage system 10,000 Oracle ASM disks in a storage system 1 million files for each … disk group Without any
ASMCA Commands → ASM Instance Upgrade an Oracle ASM Instance Configure Parameters for an Oracle ASM Instance Delete … Oracle ASM Instances Create a Disk Group Add a Disk to a Disk Group Create a Volume Create an Oracle ACFS File System
Table 11-3 Options for the -configureParameter command → Upgrade an Oracle ASM Instance - upgradeASM upgrades an Oracle ASM instance from a previous release … to the current software release. Upgrading an Oracle ASM instance with ASMCA only updates the … Oracle ASM instance software and does not configure Oracle Clusterware or the listener. An Oracle ASM
Configuring Initialization Parameters for Oracle ASM Instances → This section discusses initialization parameter files and parameter settings for Oracle ASM … instances. To install and initially configure an Oracle ASM instance, use Oracle Universal Installer (OUI … ) and Oracle ASM Configuration Assistant (ASMCA). Refer to your platform-specific Oracle Grid … Infrastructure Installation Guide
Downgrading an Oracle ASM Instance in an Oracle Restart Configuration → This section discusses the process to downgrade an Oracle ASM instance that has been upgraded to an … Oracle ASM instance is downgraded as part of the Oracle Clusterware downgrade. If you are making any … Oracle ASM The following procedure describes how to downgrade an Oracle ASM instance from Oracle 11 g … release
Active Session History Sampling for Oracle ASM → Active Session History sampling is now available on Oracle ASM instances. This activity is exposed … pack license for the Oracle ASM instance. See Also: Oracle Database Performance Tuning Guide for
About Privileges for Oracle ASM → During Oracle ASM installation, you can use one operating system group for all users or divide … should use SYSASM to administer an Oracle ASM instance. The SYSDBA privilege cannot be used to … administer an Oracle ASM instance. If you use the SYSDBA privilege to run administrative commands on an … Oracle ASM
Creating Users with the SYSASM Privilege → The SYSASM Privilege for Administering Oracle ASM SYSASM is a system privilege that enables the … separation of the SYSDBA database administration privilege from the Oracle ASM storage administration … password file authentication, as discussed in \"Password File Authentication for Oracle ASM\". To … SQL*Plus, use the following
Password File Authentication for Oracle ASM → Password file authentication for Oracle ASM can work both locally and remotely. To enable password … file authentication, you must create a password file for Oracle ASM. A password file is also … required to enable Oracle Enterprise Manager to connect to Oracle ASM remotely. If you select the Oracle … ASM storage
Best Practices White Papers on Migrating to Oracle ASM → Using Oracle Recovery Manager to Migrate Databases to Oracle ASM You can use Oracle Recovery … Manager (RMAN) to manually migrate to Oracle ASM. You can also use RMAN to migrate a single tablespace or … data file to Oracle ASM. For more information, see Chapter 8, \"Performing Oracle ASM Data Migration … with
Creating Oracle ASM Instances with Oracle ASM Configuration Assistant → Oracle ASM Configuration Assistant enables you to create an Oracle ASM instance if an Oracle ASM … instance is not found on the host, as shown in Figure 11-1. On the Create ASM page, you enter the SYS … password for the administrator of the Oracle ASM instance and the password for the ASMSNMP user that