This document summarizes the differences between Oracle RAC 11g and 12c. It provides an agenda that covers key areas such as multitenant architecture, Oracle 11g and 12c configurations, RAC 12c configurations, ASM 11g vs 12c, and improvements to DBCA in 12c. The document also references external links with more detailed information on topics like how to determine which hub node a leaf node uses, RAC networks, node eviction behavior, and IPv6 support.
11. How to Know which Hub Node is used by a Leaf Node?
• How to change from standard cluster to flex cluster and viceversa
• How to change from hub node to leaf node and viceversa
• How to see the cluster mode
• How to see the node role
• How to see which Hub Node is used by one Leaf Node.
• How to set which Hub Node has to be used by one Leaf Node.
ols.pl - A script to display GI/RAC cluster info (Doc ID 1568439.1)
http://www.toadworld.com/platforms/oracle/b/weblog/archive/2014/07/24/how-to-know-which-hub-
node-is-used-by-a-leaf-node.aspx
1. Connect to the Leaf Node you want to know its Hub Node.
2. Go to $CRS_HOME/log/<hostname>/cssd
3. Execute: cat ocssd.log |grep "clssscPipeConnect: Successfully connected to node
with connection string"|tail -1
17. What-If Command Evaluation
Supported events:
– Resource Start
– Resource Stop
– Resource Relocate
– Resource Modify
– Resource Add
– Resource Failure
– Server Pool Addition
– Server Pool Removal
– Server Relocate
– Server Removal
– Set Active Policy
– Server Pool Modification – Server Addition
19. Supporting IPv6
In previous versions, support for IPv6 was incomplete:
• VIP and network agent supported only IPv4.
Oracle Clusterware12c provides complete support for IPv6:
• VIPs and network agents are enhanced to support IPv6.
• IPv6 and IPv4 can coexist on the same network
• A VIP supporting IPv4 and IPv6 is created.
• Oracle Net Listeners set up endpoints using both addresses.
• Databases accept connections on both endpoints.