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After patching the software inside the $ASM_HOME, we are now ready to create the instance. The first thing we need to do is stamp the partitions that we would like ASM to manage.

From the $ASM_HOME\bin directory, run the asmtool utility:

Select Add or change label and click Next.

Select the 35GB partition and enter "DATA" as the prefix to stamp this partition with. Click Next.

Click Next.

Click Finish to close the tool.

We now need to repeat the above steps to specify our partition to be used for flash recovery.
From the $ASM_HOME\bin directory, run the asmtool utility:

Select Add or change label and click Next.

Select the 35GB partition and enter "FLASH" as the prefix to stamp this partition with. Click Next.

Click Next.

Click Finish to close the tool.

Now from the $ASM_HOME\bin directory, start the Database Configuration Assistant:

Select Oracle Real Application Clusters database and click Next.

Select Configure Automatic Storage Management and click Next.

Make sure all the nodes in the cluster are selected and click Next.

Enter a password for the SYS account and select the Create initialization parameter file (IFILE) option, then click Next.

Click OK to start the instance creation.

It will take a few minutes to complete the instance creation.

We now need to configure the disk groups. Click Create New.

To create the DATA disk, select the disk that was stamped as DATA earlier by the asmtool utility, mark it as External and click OK.

Repeat this for the FLASH disk. Click Create New. select the disk stamped as FLASH, mark it as External and click OK.

We should now have two disks configured. Click Finish to close the assistant.