OTN Tour 2014: Rac 11g vs 12c
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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.
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OTN Tour 2014: Rac 11g vs 12c
- 1. RAC 11g vs 12c Deiby Gómez Oracle Linux Certified Implementation Specialist. Oracle Database 11g Administrator Certified Professional. Oracle Database 12c Administrator Certified Professional. Oracle Service Oriented Architecture Infrastructure Implementation Certified Expert. Oracle Exadata Database Machine X3 Administrator Oracle RAC 11g and Grid Infrastructure Administrator
- 4. • Oracle Database <=11g Architecture • Multitenant Architecture • Oracle 11g Configurations • Oracle 12c Configurations • RAC 12c Configurations • How to Know which Hub Node is used by a Leaf Node? • RAC Networks • Node Eviction • ASM 11g • ASM 12c: Flex ASM • What-If Command Evaluation • Password File • Supporting IPV6 • DBCA improvements AGENDA
- 5. Oracle Database <=11g Architecture
- 6. Multitenant Architecture Container Database (CDB) Pluggable Database (PDB)
- 9. Oracle 12c Configurations • Only the Hub Nodes require direct access to the OCR and voting disks • Fewer interactions are required between nodes
- 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
- 13. Node Eviction <=11g • Interconnect interface 12c Hub Nodes • Interconnect Interfaces • ASM Network failure doesn’t cause reboot 12c Leaf Nodes: • Cluster software restart regardless the network http://www.toadworld.com/platforms/oracle/b/weblog/archive/2014/07/21/node-eviction-leaf-node- vs-hub-node-vs-standard-node.aspx
- 15. ASM 12c: Flex ASM http://www.oracle.com/technetwork/articles/database/flexasm-flexcluster-benefits-odb12c- 2177371.html
- 16. ASM 12c: Flex ASM http://www.oracle.com/technetwork/articles/database/flexasm-flexcluster-benefits-odb12c- 2177371.html
- 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.