What components and new features does OracleGridInfrastructure contain?

What components and new features does OracleGridInfrastructure contain? Author: Asher | classification: Oracle | Tag: ASM, grid, oracle11g | comment: 0 font size: T | since 11gR2, TOracle has launched GridInfrastructure [I personally call it Grid software]. so what are the advantages of GridInfrastructure?

What components and new features does Oracle Grid Infrastructure contain? Author: Asher | classification: Oracle | Tag: ASM, grid, oracle 11g | comment: 0 font size: T | T Oracle from 11gR2, the introduction of Grid Infrastructure [I personally call it Grid software]. What advantages does Grid Infrastructure have?

What components and new features does Oracle Grid Infrastructure contain?

Author: Asher | classification: Oracle | Tag: ASM, grid, oracle 11g | comment: 0

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Oracle has launched Grid Infrastructure since 11gR2 [I personally call it Grid software ].What are the advantages and components of Grid Infrastructure??

First, Grid Infrastructure contains the following components::

ASM: Automatic Storage Management;

ACFS: ASM Cluster File System;

ACFS snapshot;

Oracle Clusterware;

Oracle Restart.

What are the new features of Grid Infrastructure?

To explore its advantages, we can conclude from the components it contains that if you do not need to install the clusterware software in the RAC environment, you only need to install the grid. If you want to use ASM for database storage in a single-instance Environment, you must first install the grid software and create an ASM disk before installing the oracle software, the storage can be stored on the ASM disk group only when the database is created.

In addition, for Standalone databases in non-RAC architecture, Oracle Restart can take over Fault Handling for components including database services, database instances, ASM instances, ASM disk groups, and database listening. For example, if the listening process unexpectedly terminates or the database crashes during database running, Oracle Restart takes over and restarts these services.

Finally, what enhancements does the ASM of 11gR2 have compared with the previous ASM?

For example:

From the above, we can see that [including 11gR1 and 10 Gb] Before 11gR2, ASM is located on the operating system level, ASM provides drivers for database access storage devices, and then provides storage for upper-layer databases, finally, the database is accessible to the upper application system.

Starting from 11gR2, we can see that ASM is still on the OS layer, and there are multiple ADVM [ASM Dynamic Volume Manager] At the same layer as ASM. In addition to databases at the same layer, ACFS [ASM Cluster File System] and ASM provide support for third-party File systems.

What is the relationship between ASM disk, ASM diskgroup, ADVM, and ACFS?

A lun or an LVM on a partition or storage device of a physical hard disk can be created as an ASM disk, one or more ASM disks can be logically used to create an ASM disk.

With ASM diskgroup, you can create one or more ASM Dynamic Volume on the disk group using the graphic interface tool [ASMCA, OEM] or the command line tool [ASMCMD, SQL * PLUS. The volume device file on the ADVM is identified as a block device for the operating system. It is located in/dev/asm/ -Nnn.

You can use the mkfs command to create an ACFS File System on the ADVM. [command: mkfs-t acfs-n advm-volume-name/dev/asm/ -Nnn], similar to mounting other devices on the operating system, you can mount/dev/asm/ -Nnn is directly mounted to the operating system.