How do I open an ACFS file system?

How do I open an ACFS file system?

Create ACFS File System on RAC

• Overview.
• Environment.
• Verify ACFS modules.
• Create ASM Disk group.
• Create Volume.
• Create File System.
• Register File System on OCR.
• Verify Mount Point on All Nodes.

What is ACFS file system in Oracle 12c?

ASM Cluster Filesystem (ACFS) is also named "Unified Storage Management" (UFS) and allows for storing Application File Data , the Oracle Cluster Registry (OCR), the Cluster Voting Disk, and the Oracle Binaries, all within ASM.

Which command creates an ACFS file system on an ASM volume?

Create a file system with the Oracle ACFS mkfs command. Create a file system using an existing volume device. For example: $ /sbin/mkfs -t acfs /dev/asm/volume1-123 mkfs.

How do I disable ACFS file system?

When the Oracle Clusterware stack is stopped, all Oracle ACFS resources are automatically stopped. To stop individual resources, you can use SRVCTL management commands with the filesystem or volume object.

What is the use of ACFS in Oracle?

Oracle ACFS on Oracle Database Appliance Oracle ACFS is the primary cluster file system to store database files and general purpose data in the Oracle Database Appliance.

How do I open ASM proxy instance?

ASM-Proxy instance only needs to run in the clusters employing Flex ASM on the nodes where access to ACFS is required. Whereas ASM-Proxy instance can run on any node in a standard cluster, only Hub nodes in a Flex cluster can host it (Fig. 1). It can run on the same node as ASM instance or on a different node.15-Feb-2016

How do I mount an ACFS file system in Linux?

Creating an Oracle ACFS File System

• Create an Oracle ASM volume in a mounted disk group with the ASMCMD volcreate command.
• Determine the device name of the volume that was created.
• Create a file system with the Oracle ACFS mkfs command.
• Optionally register the file system with the acfsutil registry command.

What is Oracle ADVM?

Oracle ASM Dynamic Volume Manager (Oracle ADVM) provides volume management services and a standard disk device driver interface to clients.

What is Oracle Flex ASM?

Oracle Flex ASM enables an Oracle ASM instance to run on a separate physical server from the database servers. With this deployment, larger clusters of Oracle ASM instances can support more database clients while reducing the Oracle ASM footprint for the overall system.

How do I check my ASM instance status?

Verify the ASM setup

• Change to the Oracle Clusterware/Grid Infrastructure home directory: For Oracle RAC 10g Release 2/Oracle RAC 11g Release 1: # cd $CRS_HOME/bin.
• 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 manually start an ASM instance?

Startup and shutdown the Oracle ASM instance

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

How do I know if my flex ASM is enabled?

Verifying the Flex ASM setup

• Change to the Oracle Grid Infrastructure home directory. # cd $GRID_HOME/bin.
• Verify the cluster mode on any node of the cluster. # ./asmcmd showclustermode ASM cluster : Flex mode enabled. The sample output indicates that Flex ASM cluster is set up.

What is ASM volume?

ASM volumes are created within an ASM disk group and are used in conjunction with the volume driver for general purpose or ASM cluster file systems. A volume can take up all or part of a single disk group, but it can exist in only one disk group. However, a disk group can contain many volumes, space permitting.27-Sept-2013

How do you check if ASM is enabled in Oracle?

To determine if Oracles ASMFD is present on the host, you can also display the value of AFD_STATE from SYS_CONTEXT . You must run the query on the Oracle ASM instance. If the value of AFD_STATE is equal to NOT AVAILABLE , then Oracle ASMFD is not configured.

What is ASM cardinality?

About Flex ASM The default cardinality is 3, but this can be modified using srvctl modify asm command. ASM is not required to run on each node in the cluster. With Oracle Flex ASM,the clients can connect to remote ASM using network connection (ie ASM network ).12-Feb-2017

What is ASM client?

ASM Clusterware:- When the OCR(Oracle Cluster Registry), voting files, or ASM server, SPfile(Server parameter file), is stored on ASM disk group, the ASM Instance is a client of itself. ASMCA:- it is GUI that allows you to manage ASM instance, disk group, and volumes.21-Nov-2017

How do you check ASM disk groups at OS level?

Useful asmcmd commands

• List all diskgroups: ASMCMD> lsdg -- Include dismounted diskgroups: ASMCMD> lsdg --discovery -- List diskgroups across all nodes of cluster: ASMCMD> lsdg -g --discovery.
• List asm disks:
• Get attributes of ASM diskgroups:
• unmount diskgroup:

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.

How do I check my ASM Diskgroup usage?

ASM Disk group size Check

• select 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.

How do I connect to an ASM database?

How to connect to ASM instance from a remote client

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

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.15-Dec-2017

How do I open an ACFS file system?