which order must be performed, before you can change the mode of a standard cluster to Flex?

Which tasks and in which order must be performed, before you can change the mode of a standard
cluster to Flex?

Which tasks and in which order must be performed, before you can change the mode of a standard
cluster to Flex?

A.
1. The node role must be set for each node in the cluster.
You must ensure that the GNS is configured with a fixed VIP.
Flex ASM must be enabled for the cluster.
Clusterware must be started on each node.

B.
1. Clusterware must be stopped on each node.
You must set the Flex ASM cardinality.
Flex ASM must be enabled for the cluster.
Clusterware must be started on each node.

C.
1. You must ensure that the GNS is configured with a fixed VIP. 2- Flex ASM must be enabled for
the cluster.
Clusterware must be stopped on each node.
Clusterware must be started on each node.

D.
1. Clusterware must be stopped on each node.
New Application VIPs must be created.
You must ensure that the GNS is configured with a fixed VIP.
Clusterware must be started on each node.

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Prabhat

Prabhat

C

Prerequisite :

Run the following command to determine the current mode of the cluster:

$ crsctl get cluster mode status
Run the following command to ensure that the Grid Naming Service (GNS) is configured with a fixed VIP:

$ srvctl config gns
This procedure cannot succeed unless GNS is configured with a fixed VIP. If there is no GNS, then, as root, create one, as follows:

# srvctl add gns -vip vip_name | ip_address
Run the following command as root to start GNS:

# srvctl start gns
Use the Oracle Automatic Storage Management Configuration Assistant (ASMCA) to enable Oracle Flex ASM in the cluster before you change the cluster mode.

Process:

Run the following command as root to change the mode of the cluster to be an Oracle Flex Cluster:

# crsctl set cluster mode flex
Stop Oracle Clusterware by running the following command as root on each node in the cluster:

# crsctl stop crs
Start Oracle Clusterware by running the following command as root on each node in the cluster:

# crsctl start crs -wait
Note:
Use the -wait option to display progress and status messages.

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Prabhat

Prabhat

Addition …

How to enable “FLEX ASM MODE” (Prerequisite of FLEX CLUSTER MODE)

Run the script “converttoFlexASM.sh” as grid user.

Now we can check the flex ASM mode

$ asmcmd showclustermode
ASM Cluster: Flex mode enabled

Now, we can change the mode of the cluster to FLEX cluster as ‘ROOT’ user

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