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What is ASM in Oracle 11gr2?

What is ASM in Oracle 11gr2?

Automatic Storage Management (ASM) is an integrated, high-performance database file system and disk manager. ASM eliminates the need for you to directly manage potentially thousands of Oracle database files. ASM groups the disks in your storage system into one or more disk groups.

What is Oracle ASM stand for?

Automatic Storage Management
Automatic Storage Management (ASM), a feature of the Oracle Database, provides Oracle customers with simplified storage management that is consistent across all server and storage platforms.

What is ASM in RAC?

The Database Configuration Assistant (DBCA) is used in Oracle Database 10g to configure the Automated Storage Management (ASM) features for conventional and Real Application Clusters (RAC) environments. ASM is used to automate and simplify the optimal layout of datafiles, control files, and log files.

How do I connect to ASM?

How to connect to ASM instance from a remote client

1. Edit the listener.ora on ASM server.
2. Edit the tnsnames.ora on the client.
3. Setup your remote login password for your ASM instance on the ASM server.
4. Set your SYS password using ORAPWD for the ASM instance.

How do I know if my ASM is running?

Verify the ASM setup

1. Change to the Oracle Clusterware/Grid Infrastructure home directory: For Oracle RAC 10g Release 2/Oracle RAC 11g Release 1: # cd $CRS_HOME/bin.
2. Verify the status of ASM on all the nodes in the cluster: # ./srvctl status asm ASM instance +ASM1 is running on node galaxy.

How do I know the size of my ASM file?

How To List Files and Sizes within an ASM Disk Group

1. select f. group_number, f. file_number, bytes, space, space/(1024*1024) “InMB”, a. name “Name”
2. from v$asm_file f, v$asm_alias a.
3. where f. group_number=a. group_number and f. file_number=a. file_number.
4. order by f. group_number, f. file_number;

What are the advantages of ASM?

2) What are the key benefits of ASM?

• ASM spreads I/O evenly across all available disk drives to prevent hot spots and maximize performance.
• ASM eliminates the need for over provisioning and maximizes storage resource utilization facilitating database consolidation.
• Inherent large file support.

What is the difference between Oracle RAC and Grid?

Answer: A Grid is not a cluster. The confusion between Grid and RAC is because Oracle redefined “Grid Computing” from it’s original definition. The key distinction between RAC and Grid is in the way the resources are managed: Cluster: RAC (clusters) and all about databases.

What is the advantage of ASM in Oracle?

ASM lowers the Oracle database storage total cost of ownership and increases storage utilization while improving performance and availability as compared with traditional file system and volume management solutions. With ASM, less effort is required for managing your database storage environment.

How do I manually start an ASM?

Startup and shutdown the Oracle ASM instance

1. Set the default Oracle_home environment variable to grid home where ASM is installed. EXPORT ORACLE_HOME=/up1/grid/12.2.0/dbhome_1.
2. Connect with sqlplus. SQLPLUS / as sysasm.
3. Start up the Oracle ASM Instance. SQL> STARTUP.
4. Check the spfile location or otherwise set it with.

How do I check my ASM?

Where is my ASM disk path?

To identify the underlying physical device that the ASM disk point to, you can use the oracleasm querydisk command. The querydisk option will list the major and minor numbers that can be used to match the physical device. The following example was run on a virtual server hosting ASM and an Oracle database.

Which is the latest version of Oracle ASM?

Oracle Automatic Storage Management (Oracle ASM) in Oracle Database 11g Release 2 (11.2) supports 11g Release 2 (11.2) or older software versions of Oracle database instances, including Oracle Database 10 g.

What can I use to administer an oracle ASM instance?

You can use Oracle Enterprise Manager and SQL*Plus to perform Oracle ASM instance administration tasks. Oracle ASM is installed in the Oracle Grid Infrastructure home separate from the Oracle Database home. Only one Oracle ASM instance is supported on a server.

Which is better Oracle Clusterware or Oracle ASM?

For compatibility between Oracle Clusterware and Oracle ASM, the Oracle Clusterware release must be greater than or equal to the Oracle ASM release. An Oracle ASM instance must be at 11g Release 2 (11.2) to support an 11g Release 2 (11.2) Oracle Database.

Where to find runinstaller for Oracle 11gR2 OBEs?

If you are not using the Oracle VM template for Oracle Database 11gR2 OBEs, you need to access the runInstaller from your software directory. 3. There are unformatted disk partitions available to mark as ASM disks and form into an ASM diskgroup.