What is an out of place upgrade?
Review this information about out-of-place upgrade of Oracle Grid Infrastructure. With an out-of-place upgrade, the installer installs the newer version in a separate Oracle Clusterware home. Both versions of Oracle Clusterware are on each cluster member node, but only one version is active.
What is RAC failover?
Oracle RAC provides failover with the node VIP addresses by configuring multiple listeners on multiple nodes to manage client connection requests for the same database service. When a client issues a connection request using SCAN, the three SCAN addresses are returned to the client.
How do I check my network configuration after installing RAC cluster?
Checking Oracle RAC Network and IPs information
- Display the current scan configuration. $ srvctl config scan. SCAN name: exadata-pscan1, Network: 1. Subnet IPv4: 192.168.16.0 /255 .255.255.0 /bondeth0 , static.
- Obtain information about SCAN DNS records. $ nslookup exadata-pscan1. Server: 192.168.16.20.
- Display Cluster Name.
What is RAC in networking?
Real Application Cluster (RAC) is a component of the Oracle 9i database product that allows a database to be installed across multiple servers. This adds failover capacity to the database, because all servers have access to the whole database.
What is in-place upgrade in PEGA?
For an in-place upgrade this will upgrade both rules and data in a single run. If your goal is to get to the upgraded version as quickly as possible regardless of downtime, then this might be the preferred option.
What is upgrading in Oracle?
Accelerate upgrades and migrations with a range of database utilities including the AutoUpgrade tool—which can identify and often automatically resolve migration-blocking issues. …
How do I check my VIP configuration?
At the command prompt, type one of the following sets of commands to enable or disable a VIP and verify the configuration: enable ns ip …To enable or disable a VIP address by using the GUI:
- Navigate to System > Network > IPs > IPV4s.
- Do one of the following:
- From the Action list, select Disable or Enable.
What is split brain in RAC?
Split brain syndrome occurs when the instances in a RAC fails to connect or ping to each other via the private interconnect, Although the servers are physically up and running and the database instances on these servers is also running.
How do I check if my Oracle RAC installation is ready for upgrade?
Use the Cluster Verification Utility (CVU) to check the readiness of your Oracle RAC installation for upgrades. You can verify that the permissions required for installing Oracle RAC have been configured on the nodes node1 and node2 using cluvfy.
How to shut down the Oracle RAC database?
You can use Oracle Enterprise Manager or the Server Control (SRVCTL) utility to shut down the Oracle RAC databases and their instances. Stop all listener and other processes running in the Oracle home directories where you want to modify the database software.
How do I upgrade my RAC cluster?
Use the Cluster Verification Utility (CVU) to check the readiness of your Oracle RAC installation for upgrades. Running cluvfy with the -pre dbinst and -upgrade options performs system checks to confirm if the cluster is in a correct state for upgrading from an existing Oracle RAC installation.
What is an out-of-place upgrade in Clusterware?
With an out-of-place upgrade, the installer installs the newer version in a separate Oracle Clusterware home. Both versions of Oracle Clusterware are on each cluster member node, but only one version is active. Rolling upgrade avoids downtime and ensure continuous availability while the software is upgraded to a new version.
0