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Add Disk to ASM Disk Group using asmca

by admin

ASM Configuration Assistant is a GUI tool, introduced in Oracle 11g, that can be used to install and configure an ASM instance, disk groups, volumes, and ACFS. Like the DBCA, ASMCA can also be used in silent mode. Oracle Universal Installer internally uses ASMCA in silent mode to configure ASM disk groups to store OCR and voting files. ASMCA is capable of managing the complete ASM instance and associated ASM objects. Starting with Oracle 11g, DBCA does not allow creating and configuring ASM disk groups, and Oracle’s future directions are to promote the use of ASMCA because it is a complete ASM management tool.

This post will demonstrate, how to add disk in existing diskgroup using asmca.

1. First, set the environment variables for the ASM instance. In our case the ASM instance SID is +ASM1.

$ . oraenv
ORACLE_SID = [+ASM1] ?
The Oracle base remains unchanged with value /app/grid

2. Start the asmca:

$ asmca

It will open the GUI for ASM configuration assistant.

3. Here I’m having FRA diskgroup wth 200 GB space & i want to add 1 more disk of 100GB to FRA diskgroup. Right click on the FRA diskgroup or diskgroup in which we need to add disk. Click on Add Disks.

asm configuration assistant

4. It will open a new window.

add disk to asm disk group

Here no need to select Disk name & redundancy for disk group, as we have already specified it at the time of disk group creation.

5. select the eligible disk, change Disk discovery path if required & click ok.

disk added successfully to ASM

Click on OK.

asmca add disk

FRA diskgroup now with a space of 300GB.

This completes the adding disk to the existing disk group using asmca.

How to change the ASM rebalance power of an ongoing operation
Oracle 11g – New ASM features
Beginners Guide to Automatic Storage Management (ASM)

Filed Under: ASM, oracle

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