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Oracle Real Application Clusters (RAC) 12 c

Oracle Real Application Clusters (RAC) 12 c. Troy Anthony Database as a Service Centre. Program Agenda. Oracle RAC 12c Overview Oracle RAC 12c for: Better Business Continuity and High Availability Cost-effective Workload Management Standardized Deployment and System Management.

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Oracle Real Application Clusters (RAC) 12 c

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  1. Oracle Real Application Clusters (RAC) 12c Troy AnthonyDatabase as a Service Centre

  2. Program Agenda • Oracle RAC 12c Overview • Oracle RAC 12c for: • Better Business Continuity and High Availability • Cost-effective Workload Management • Standardized Deployment and System Management

  3. The following is intended to outline our general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The development, release, and timing of any features or functionality described for Oracle’s products remains at the sole discretion of Oracle.

  4. Slide Title: Arial, 28 PTTwo-Line Max Subtitle: Arial, 20 pt, One-Line Max • Bullets are sentence case. Use Arial, 20 pt font. • Sub-bullets are Arial, 18 pt font. • Keep bullets short. • One idea per bullet. • No more than five bullets. • NOTE: Arial is the ONLY font that should be used in the Oracle corporate presentation template.Times and other serif fonts are not acceptable. To ensure that slides are properly formatted to this template, see pages 7 and 8for instructions. Times Arial

  5. The New Oracle RAC 12c Oracle RAC 12c provides: • Better Business Continuity and High Availability (HA) • Agility and Scalability • Cost-effective Workload Management CRM Oracle Real Application Clusters (RAC) Oracle EM 12 Cloud Control Utility Computer

  6. The New Oracle RAC 12c Oracle RAC 12c provides: • Better Business Continuity and High Availability (HA) • Agility and Scalability • Cost-effective Workload Management Using • A standardized and improveddeployment and management • A familiar and matured HA stack CRM Oracle Real Application Clusters (RAC) Oracle Grid Infrastructure (GI): Automatic Storage Management (ASM) Oracle Clusterware (OCW) Oracle EM 12 Cloud Control Oracle Flex ASM Utility Computer

  7. The Utility Computer – Better DB Management CRM • The Utility Computer concept provides: • A central point of management • HA for management tools (in cluster) • For Oracle (RAC) databases, the utility cluster can serve as central location for • Storing diagnostic and performance information • Rapid Home Provisioning (used as Grid Home Server) Oracle Real Application Clusters (RAC) Oracle EM 12 Cloud Control Logs / TFA Home Provisioning

  8. Standardize on Oracle RAC Different flavors, same management Oracle RAC DBA DBA DBA Oracle RAC One Node Scalability DBA DBA Oracle Restart Oracle GI Oracle GI DBA Oracle GI High Availablity

  9. Standardize on Oracle RAC For better availability during maintenance operations Oracle RAC DBA DBA DBA Oracle RAC One Node Scalability DBA DBA Online (rolling) Patch and PSU Application Oracle GI Oracle GI High Availablity

  10. Standardize on Oracle RAC For all the flexibility you need Oracle RAC DBA DBA DBA Oracle RAC One Node Scalability Online upgrade DBA DBA Oracle Restart Oracle GI Oracle GI Re-configuration to enable cluster DBA Oracle GI Flexibility

  11. Standardize on Oracle RAC For better agility and consolidation Oracle RAC DBA DBA DBA Oracle RAC One Node Agility DBA DBA Oracle Restart Oracle GI Oracle GI DBA Oracle GI Consolidation

  12. Standardize on Oracle RAC and Oracle Multitenant The new standard for Oracle Database consolidation Oracle RAC Oracle RAC One Node Agility Oracle GI Oracle GI Consolidation

  13. Program Agenda • Oracle RAC 12c Overview • Oracle RAC 12c for: • Better Business Continuity and High Availability • Cost-effective Workload Management • Standardized Deployment and System Management

  14. Application Continuity

  15. Dealing with Unknown Transaction State Pre-Oracle Database 12c • Database outages can cause in-flight work to be lost, leaving users and applications in doubt • Often leads to • User pains • Duplicate submissions • Rebooting mid-tiers • Developer pains CRM DBA DBA DBA DBA DBA

  16. Tackling In-Flight Work for Unplanned Outages Two New Features • Transaction Guard • A Reliable protocol and API that returns the outcome of the last transaction • Application Continuity • Safely attempts to replay in-flight work following outages and planned operations.

  17. Application Continuity Masks Unplanned & Planned Outages • Replays in-flight (DML)work on recoverable errors • Masks many hardware, software, network, storage errors and outages when successful • Improves end-user experience and productivity without requiring custom application development CRM DBA ✔ DBA DBA DBA DBA

  18. Application Continuity - Example A reliable replay of in-flight work User selects product from application and purchases it from the web checkout End User User transaction arrives at application infrastructure. It makes it’s way through the application tiers and results in a database transaction being created Application Servers Network Switches Database Servers

  19. Application Continuity - Example A reliable replay of in-flight work End User The infrastructure hosting the database fails just before the transaction is committed to the database. Application Servers Network Switches Database Servers

  20. Application Continuity - Example A reliable replay of in-flight work The jdbc driver detects the failure and checks with an available node in the cluster, using “Transaction Guard”, whether the transaction committed or needs to be replayed End User Application Servers If the transaction needs to be replayed, “Application Continuity” will submit all of the inflight work to a surviving node in the cluster and perform a commit. This all happens transparently to the application Network Switches Database Servers

  21. Application Continuity - Example A reliable replay of in-flight work End User The user receives confirmation that his order has been successfully completed. Application Servers Network Switches Database Servers

  22. Oracle Automatic Storage Management (ASM) 12c

  23. The History of ASM Why Oracle Developed ASM • Pre-Oracle Database 10g storage management was provided by 3rd parties • Customer challenges • Large databases required considerable storage management • Best performance required raw storage • NFS solutions, while simple, did not perform as well as raw • For RAC, cluster file systems were not available • With Oracle 10g, ASM provided • Simplicity of management, even better than NFS solutions • Performance equal to raw disks

  24. The History of ASM The Simple Idea • Integrated volume manager and file system • Stripe and mirror files across disks in a ASM Disk Group • Automatic “Rebalance” • Built on the Oracle instance architecture • Manage storage as a global cluster “shared Disk Groups”

  25. ASM Overview Simplify the Stack Server Server Oracle Database Oracle Database ASM File System and Volume Management Operating System File System Logical Volume Manager Operating System

  26. ASM Overview Oracle Database 11.2 or earlier RAC Cluster Node1 Node2 Node3 Node4 Node5 Database Instance DBA DBA DBB DBB DBB DBC One to One Mapping of ASM Instances to Servers ASM Instance ASM ASM ASM ASM ASM ASM Cluster Pool of Storage Shared Disk Groups Wide File Striping Disk Group A Disk Group B ASM Disk

  27. ASM Overview Oracle ASM 12c Standard Deployment RAC Cluster Node1 Node2 Node3 Node4 Node5 Database Instance Database Instance DBA DBA DBB DBB DBB DBC One to One Mapping of ASM Instances to Servers ASM Instance ASM Instance ASM ASM ASM ASM ASM Shared Disk Groups Wide File Striping ASM Cluster Pool of Storage ASM Disk Disk Group A Disk Group B

  28. Introducing Oracle Flex ASM Removal of One to One Mapping and HA RAC Cluster Node1 Node2 Node3 Node4 Node5 Database Instance DBA DBA DBB DBB DBB DBC Databases share ASM instances ASM Instance ASM Instance ASM ASM ASM Node2 runs as ASM Client to Node3 Node1 runs as ASM Client to Node4 Node1 runs as ASM Client to Node2 Node5 runs as ASM Client to Node4 Shared Disk Groups Wide File Striping ASM Cluster Pool of Storage ASM Disk Disk Group A Disk Group B

  29. Flex ASM Remote Access • In previous versions, ASM clients use OS-authentication to connect to ASM • This works because ASM clients and servers are always on the same server • With Oracle Database 12c, ASM clients and ASM servers can be on different servers • A default configuration is created when the ASM cluster is configured • Benefits of providing a shared password file in ASM Disk Group

  30. Supporting Pre-Oracle 12c Databases Pre-Oracle 12c Databases require a local ASM instance RAC Cluster RAC Cluster Node1 Node2 Node3 Node4 Node5 Database Instance DBA DBA DBB DBB DBB • 11gDB DBC 11gDB Databases share ASM instances ASM Instance ASM ASM ASM ASM ASM Shared Disk Groups Wide File Striping ASM Cluster Pool of Storage ASM Disk Disk Group A Disk Group B

  31. Flex ASM Other Flex ASM features • Increase maximum number of Disk Groups to 511 • Previous limit was 63 • Command for renaming ASM Disk • ASM instance Patch-level verification • Patch level verification is disabled during rolling patches • Replicated Physical Metadata • Improves reliability • Virtual Metadata has always been replicated with ASM mirroring

  32. Small ASM Features – Big Difference Disk and disk group operations

  33. Small ASM Features – Big Difference Better availability and performance

  34. Program Agenda • Oracle RAC 12c Overview • Oracle RAC 12c for: • Better Business Continuity and High Availability • Cost-effective Workload Management • Standardized Deployment and System Management

  35. Policy-Managed Databases Highly available workload management • Allocate resources • As demand requires it • As the business requires it: • Over the period of one day • As the system requires it: • For automated management tasks

  36. Policy-Managed Databases Better High Availability for any cluster • Improve HA • By choosing servers from the least important server pool • Accommodating for double or multiple subsequent failures • For planned maintenance: • Allocate backup servers in the cluster 1 2

  37. Policy-Managed Databases Customer quote: “Policy-managed; It’s all about the workload” • Policy Logic defines: • Availability • Service Levels • Maint. windows • Performance • PCI requirements • Regional/business • Version “Server pools are dynamically adjusted” EMEA “Uniform services….don’t care where instances are or their name. All about capacity and workload” Americas Americas “Instances are controlled by min/max combined with services. No more add/drop instance.” “QoS is critical to our management”

  38. Policy-based Cluster Management Server Pools that understand and make a difference • Oracle RAC 12.1 • Scales out easier than ever (addNode) • Actively utilizes differently sized servers • Server Pool management has been improved to understand server differences in the cluster: • Server attributes are stored per server • Server Pools are set up using Server Categories • Servers are allocated to pools based on categories • Combine only test servers in one pool • Remove servers from test-pool preferably • Ensure a minimum size of servers per pool Server Attributes • NAME • MEMORY_SIZE • CPU_COUNT • CPU_CLOCK_RATE • CPU_HYPERTHREADING • CPU_EQUIVALENCY • … • Server Categories • NAME • ACL • EXPRESSION • …

  39. What-If Command Evaluation Complex cluster management made predictable MAIL • Oracle RAC 12.1 What-If Command Evaluation • Helps to set up and validate policies • Helps to plan for downtime scenarios • Analyze the impact beforehand • Ensure smooth cluster operations • What-If Command Evolution supports: • Set Active Policy • Server Pool, server or resource modification • E.g. addition, relocation or removal • Special commands for failure evaluation PROD Action: Move server between pools What If?

  40. What-If Command Evaluation How it works MAIL The DBA view: >> srvctl relocate server -servers lnxrac12srv1 -serverpool mail -eval Database rac will be stopped on node lnxrac12srv1 Server lnxrac12srv1 will be moved from pool ora.prod to pool ora.mail PROD The cluster administrator view: >> crsctleval relocate server lnxrac12srv1 -to ora.mail -f Stage Group 1: ------------------------------------------------------------------------------ Stage Number Required Action ------------------------------------------------------------------------------ 1 Y Server 'lnxrac12srv1' will be moved from pools [ora.prod] to pools [ora.mail] 2 Y Resource 'ora.rac.db' (1/1) will be in state [OFFLINE] ------------------------------------------------------------------------------ Action: Move server between pools [grid@LnxRAC12Srv1 bin]$ ./srvctlconfigsrvpool ... Server pool name: mail Importance: 0, Min: 1, Max: 3 ... Candidate server names: Server pool name: prod Importance: 0, Min: 1, Max: 2 ...

  41. Small Oracle RAC 12c Feature – Big Difference Optimized Flexibility and Agility

  42. Program Agenda • Oracle RAC 12c Overview • Oracle RAC 12c for: • Better Business Continuity and High Availability • Cost-effective Workload Management • Standardized Deployment and System Management

  43. Standardize on Oracle RAC and Oracle Multitenant The new standard for Oracle Database consolidation Oracle RAC Oracle RAC One Node Agility Oracle GI Oracle GI Consolidation

  44. Oracle RAC Support for Oracle Multitenant

  45. Oracle RAC support for Oracle Multitenant Start off with a Single Instance, non-CDB Server Services Server Database Instance Database Instance CRM South CRM Reporting CRM North Services CRM

  46. Oracle RAC support for Oracle Multitenant Convert to a RAC Database, non-CDB CRM Reporting Node 1 Node 2 Services Node 1 RAC Instance 1 RAC Instance 1 RAC Instance 2 CRM South CRM North Services CRM

  47. Oracle RAC support for Oracle Multitenant Convert to a CDB RAC Database Node1 Node2 Services CDB Instance 1 CDB Instance 2 CRM CDB

  48. Improved Agility with Changing Workloads Expand Cluster to Support Flexible Consolidation Model Node1 Node2 Services CDB Instance 1 CDB Instance 2 Single SGA per CDB Instance DW HCM ERP BI CRM Multitenant Container Database (CDB)

  49. Improved Agility with Changing Workloads Expand Cluster to Support Flexible Consolidation Model Node1 Node3 Node2 Services CDB Instance 1 CDB Instance 3 CDB Instance 2 Single SGA per CDB Instance DW HCM ERP BI CRM Multitenant Container Database (CDB)

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