Upgrade
Administrators need to schedule a maintenance window to upgrade their SGA VM(s) to ensure users know not to access the SGA-enabled workload VMs while the SGA upgrade is in progress. Administrators can use the Maintenance Mode feature to alert users that the account is undergoing maintenance.
The time to perform an SGA upgrade will depend on the infrastructure your account is using, infrastructure traffic, and the number of SGA Nodes to be deployed.
Automatically Deployed SGA Nodes
To upgrade your SGA 4 VMs, add new SGA nodes. Once the new SGA nodes are Available under Streaming Gateways page for the SGA Cluster, power off the old SGA 4 nodes to test the new SGA 4 nodes. If those new SGA 4 nodes work, then delete the old SGA 4 nodes.
Manually Deployed SGA Nodes
Add new SGA node(s) for the existing SGA Cluster in Streaming Gateways page to obtain the Registration Code(s). Then manually provision new SGA node(s) using those Registration Code(s).
Once the new SGA node(s) are availabe, power off the old SGA 4 nodes in your cloud infrastructure console to test the new SGA 4 nodes. If those new SGA 4 nodes work, then delete the old SGA 4 nodes from your cloud infrastructure console.