How do I set up an ASM
Set up your Oracle ASM installation In the Configure ASM: Disk Groups dialog box, click the Create button, and then click Show Advanced Options .
In the Create Disk Group dialog box: Enter the disk group name DATA..
How do I add a raw disk to ASM
SQL> ALTER DISKGROUP TEST MOUNT; SQL> SELECT STATE, NAME FROM V$ASM_DISKGROUP; Make sure you try mounting the TEST disk group from each ASM instance in case of a RAC configuration….Creating temporary Disk GroupTo create a new disk group use the below command. … Check if the diskgroup is created and mounted:More items…•Mar 31, 2018
How do I know if ASM is installed
After installing Oracle ASM software, you can verify that Oracle ASM software is installed and Oracle ASM disk group is mounted on a cluster node by performing the following steps. Note – If you are using Oracle database 11g, you should use sqlplus “/ as sysasm” instead of sqlplus “/ as sysdba”.
How do you stop ASM
To stop Oracle ASM you must shut down Oracle Clusterware.
What is ASM disk group
Automatic Storage Management (ASM) is an integrated, high-performance database file system and disk manager. … ASM groups the disks in your storage system into one or more disk groups. You manage a small set of disk groups and ASM automates the placement of the database files within those disk groups.
How do I increase my ASM disk size
The RESIZE clause of ALTER DISKGROUP enables you to resize disks in a disk group. All disks in the disk group must be of equal size. If you do not specify a new size in the SIZE clause, then Oracle ASM uses the size of the disks as returned by the operating system.
How do I find the size of my ASM disk
ASM Disk group size Checkselect name, total_mb, free_mb, usable_file_mb,round(((total_mb-nvl(free_mb,0))/total_mb)*100,0) percent_used.from V$ASM_DISKGROUP_STAT;SELECT G.NAME,sum(b. total_mb) total_mb,sum((b. total_mb – b. free_mb)) used_mb,sum(B. FREE_MB) free_mb,decode(sum(b. total_mb),0,0,(ROUND((1- (sum(b.More items…
How do you start an ASM listener
Specify a particular listener name. Use the srvctl config listener command to obtain the name of a listener. If you do not specify this parameter, then the listener name defaults to LISTENER for a database listener; LISTENER_ASM for an Oracle ASM listener; or LISTENER_LEAF for a Leaf Node listener.
How do I create an ASM disk in Linux
From Oracle Linux 6 onward, the oracleasm kernel driver is built into UEK, so it doesn’t need to be installed separately. Install the packages as the root user. With the software installed, configure the ASM kernel module. Once the kernel module is loaded, stamp (or label) the partitions created earlier as ASM disks.
How do I get ASM disk details in Linux
In Linux, ASMLib provides the wrapper for managing the ASM disks. 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.
How do I mount an ASM disk group
A disk group number is not recorded in any persistent structure, but the current value can be viewed in the GROUP_NUMBER column of the V$ASM views. When you want to mount or dismount disk groups manually, use the ALTER DISKGROUP… MOUNT or ALTER DISKGROUP… DISMOUNT statement.
How do I add a disk to ASM Diskgroup in Linux
Answer: Adding Disks to a Disk Group is done with the “alter diskgroup” command. ‘/devices/diska*’; â€¢ When a disk is added to the diskgroupand it is formatted and then rebalanced. â€¢ When you don’t specify a FAILGROUP clause when adding a disk to a ASM diskgroup, the disk is in its own failure group.
What is disk group in Linux
Disk groups are named collections of disks that share a common configuration. Volumes are created within a disk group and are restricted to using disks within that disk group. Data related to a particular set of applications or a particular group of users may need to be made accessible on another system.
How do you change ASM disk to candidate
In order to convert the member asm disk to candiate we need to first clear the contents of the disk and then remove and add again. In this example we are converting CRS1 and CRS2 from member to candidate.
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 manually start an ASM
Startup and shutdown the Oracle ASM instanceSet the default Oracle_home environment variable to grid home where ASM is installed. EXPORT ORACLE_HOME=/up1/grid/12.2.0/dbhome_1. EXPORT ORACLE_SID=+ASM.Connect with sqlplus. SQLPLUS / as sysasm.Start up the Oracle ASM Instance. SQL> STARTUP. ASM instance started. … Check the spfile location or otherwise set it with.Nov 30, 2018
How do I drop and recreate ASM Diskgroup
In all cases and before the erasing operation you should gather the following information:alert. log file from all ASM instances going back to last successful mount for diskgroup.OS logs.Backup disk header for all member disks in diskgroup:Jan 24, 2020