Database Reference
In-Depth Information
When prompted, execute the
root.sh
script as the root user on the new node.
Once a new node is successfully added to the cluster, run through the following post-addnode command:
$ ./cluvfy stage -post addnode -n rac3 -verbose
Removing a Node
Assume that you have a three-node cluster environment and want to delete the rac3 node from the existing cluster.
Ensure the node that is going to be dropped has no databases, instances, or other services running. If any do exist,
either drop them or just move them over to other nodes in the cluster. The following steps outline a procedure to
remove a node from the existing cluster:
The node that is going to be removed shouldn't be pinned. If so, unpin the node prior to starting the procedure.
The following examples demonstrate how to identify if a node is pinned and how to unpin the node:
$ olsnodes -n -s -t
You will get the following typical output if the nodes are pinned in the cluster:
rac1 1 Active Pinned
rac2 2 Active Pinned
rac3 3 Active Pinned
Ensure that the cluster stack is up and running on node rac3. If the cluster is inactive on the node, you first need
to bring the cluster up on the node and commence the procedure to delete the node.
Execute the following command as the root user from any node if the node that is going to be removed is pinned:
$ crsctl unpin css -n rac3
Run the following command as the root user on the node that is going to be removed:
$GRID_HOME/deinstall/deinstall -local
■
the
-local
argument must be specified to remove the local node; otherwise, the cluster will be deinstalled
from every node of the cluster.
Note
Run the following command as the root user from an active node in a cluster:
$crsctl delete node -n rac3
From any active node, execute the following command to update the Oracle inventory for GI and RDBMS homes
across all nodes:
$GRID_HOME/oui/bin/runInstaller -updateNodeList ORACLE_HOME=$GRID_HOME
cluster_nodes={rac1,rac2} CRS=TRUE -silent
$GRID_HOME/oui/bin/runInstaller -updateNodeList ORACLE_HOME=$ORACLE_HOME
cluster_nodes={rac1,rac2} CRS=TRUE -silent
