How do I check my ASM status?

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.

Hereof, how do I check my ASM instance status?

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.

Furthermore, 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;

Also know, how do I know if my ASM is running?

Type "help [command]" to get help on a specific ASMCMD command. The lsdsk command can be used to display the disk paths for all ASM disks. It utilizes the dynamic performance view v$asm_disk respectively gv$asm_disk in a clustered environment if the ASM instance is up and running.

How do I view ASM disk groups?

To see all disks, use V$ASM_DISKGROUP instead. Contains one row for every Oracle ASM file in every disk group mounted by the Oracle ASM instance. In an Oracle ASM instance, contains one row for every active Oracle ASM long running operation executing in the Oracle ASM instance.

Related Question Answers

How do I bring down an ASM instance?

The Oracle ASM shutdown process is initiated when you run the SHUTDOWN command in SQL*Plus. Before you run this command, ensure that the ORACLE_SID environment variable is set to the Oracle ASM SID so that you can connect to the local Oracle ASM instance.

How do I get ASM Diskgroup online?

To bring a disk online, select the disk to bring online and click Online. If you bring a disk online, then Oracle ASM performs the following: Oracle ASM performs the online operation on the selected disks. You can select one or more or disks, or all of the disks to bring online.

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.

How do I connect to Asmcmd?

To run ASMCMD in interactive mode:

1. Enter the following at the OS command prompt: $ asmcmd.
2. Enter an ASMCMD command and press Enter. The command runs and displays its output, and then ASMCMD prompts for the next command.
3. Continue entering ASMCMD commands. Enter the command exit to exit ASMCMD.

How do I view ASM disk header?

The kfed is an undocumented ASM utility that is used to read and modify ASM metadata blocks. The kfed is a standalone utility, independent of any ASM instance, so it can be used with either mounted or dismounted disk groups.

What is ASM disk group?

ASM uses disk groups to store datafiles; an ASM disk group is a collection of disks that ASM manages as a unit. Within a disk group, ASM exposes a file system interface for Oracle database files.

How do I scan an ASM disk in Linux?

How to Force ASM to Scan the Multipathed Device First using ASMLIB/oracleasm

1. Shutdown all (DB and ASM):
2. For backup, make a copy of your current /etc/sysconfig/oracleasm and /etc/sysconfig/oracleasm-_dev_oracleasm files.
3. As root user, save the file (oracleasm-_dev_oracleasm).
4. Restart oracleasm (as root):

How do I check my ASM Diskgroup status?

You can query the V$ASM_DISK view to display the status of ASM disks.

What is ASM in Oracle RAC?

ASMB - Runs in database instances and connects to foreground processes in ASM instances. Communicates with the ASM instance, managing storage and providing statistics. ASMB runs in ASM instances when the ASMCMD cp command runs or when the database instance first starts if the server parameter file is stored in ASM.

How do I check my ASM free space?

How to check free space in ASM

1. Connect to asm instance: select name, state, total_mb, free_mb from v$asm_diskgroup; NAME STATE TOTAL_MB FREE_MB. —————————— ———– ———- ———- ORADATA MOUNTED 65536 53439.
2. Using Grid Control. Go to asm host and select asm instance. Go Administration tab and input asm administration password:
3. Using ASMCMD tool.

How do I mount a Diskgroup?

When you want to mount or dismount disk groups manually, use the ALTER DISKGROUP MOUNT or ALTER DISKGROUP DISMOUNT statement. You can mount or dismount disk groups by name, or specify ALL .

How do I create a folder in ASM?

Creating a Directory

Use the ADD DIRECTORY clause of the ALTER DISKGROUP statement to create a hierarchical directory structure for alias names for Oracle ASM files. Use the slash (/) or backslash () character to separate components of the directory path.

How do I delete files from ASM Diskgroup?

Just make sure your SID is set properly and type asmcmd from the command line. In there you can cd, ls, pwd and rm to remove ASM files and directories. Check out this article on using asmcmd commands. You can use the alter diskgroup and drop diskgroup to remove ordinary ASM disk groups.

How do I transfer files to Asmcmd?

From 11gR1, Oracle introduced “cp” command in asmcmd utility. Enables you to copy files between ASM disk groups on local instances to and from remote instances. The file copy cannot be between remote instances. The local ASM instance must be either the source or the target of the operation.

How do I rename a folder in Asmcmd?

ASMCMD does not provide option to rename the directory like we have 'mv' at OS level. Solution: You can use the ALTER DISKGROUP <DG_NAME> rename directory 'sourcename' to 'destname';

How do you add ASM disk to RAC?

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 Group

1. To create a new disk group use the below command.
2. Check if the diskgroup is created and mounted:

How do I add more space to ASM Diskgroup?

Question: How do I add a disk volume to an ASM diskgroup? Answer: Adding Disks to a Disk Group is done with the "alter diskgroup" command. '/devices/diska*'; • When a disk is added to the diskgroupand it is formatted and then rebalanced.

How do I add a raw disk to ASM Diskgroup?

Add the disk to existing diskgroup:

SQL> ALTER DISKGROUP PROD_DG ADD DISK '/dev/oracleasm/disks/DATA02';