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The Top 5 Reasons to Deploy Your Applications on Oracle RAC
This document discusses the top 5 reasons to deploy applications on Oracle Real Application Clusters (RAC). It discusses how RAC provides: 1. Developer productivity through transparency that allows developers to focus on application code without worrying about high availability or scalability. 2. Integrated scalability for both applications and database features through techniques like parallel execution and cache fusion that allow linear scaling. 3. Seamless high availability for the entire application stack through capabilities like fast reconfiguration times and zero data loss that prevent application outages. 4. Isolated consolidation for converged use cases through features like pluggable database isolation that allow secure sharing of hardware resources. 5. Full flexibility to choose deployment options
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Overview of the presentation and speakers focusing on Oracle RAC applications.
Simplified overview of Scalability and High Availability choices in Oracle Database.
Emphasizes Developer Productivity, Scalability, High Availability, Consolidation, and Flexibility.
Details TNS connector string for setting up Oracle DB connections for scalability and availability.
Highlights benefits for developers, including instance connections, load balancing, and scaling.
Introduction of Hang Manager in Oracle to detect and resolve database hangs and related performance.
Suggestions to optimize applications using Oracle RAC, emphasizing advanced queuing and writing contention.
Emphasizes Developer Productivity, Scalability, High Availability, Consolidation, and Flexibility.
Discusses RAC's scalability across various enterprise applications and OLTP, DWH workloads.
Evolution of Oracle RAC features highlighting enhancements from different versions up to 21c.
Explains Oracle RAC's ability to dynamically optimize data access without increasing latency.
Describes parallel execution in RAC for scaling processing across CPU cores.
Integration of RDMA for reducing message traffic and CPU load in Oracle RAC operations.
Emphasizes Developer Productivity, Scalability, High Availability, Consolidation, and Flexibility.
Discusses zero downtime upgrades and application continuity features for uninterrupted service.
Overview of Oracle Clusterware and reliability frameworks for enhancing system performance.
Emphasizes Developer Productivity, Scalability, High Availability, Consolidation, and Flexibility.
Analysis of converging database use cases and benefits of Oracle Multitenant & RAC.
Explains PDB isolation in RAC and cost-effective management of multi-tenant environments.
Emphasizes Developer Productivity, Scalability, High Availability, Consolidation, and Flexibility.
Emphasizes Developer Productivity, Scalability, High Availability, Consolidation, and Flexibility.
Discusses RAC's scalability across various enterprise applications and OLTP, DWH workloads.
Closing remarks along with speaker contact information for further inquiries.
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Similar to The Top 5 Reasons to Deploy Your Applications on Oracle RAC
The Top 5 Reasons to Deploy Your Applications on Oracle RAC
- 1. The Top 5Reasons to Deploy Your Applications on Oracle RAC A presentation for developers, DBAs, and managers Markus Michalewicz Vice President of Product Management Oracle Database High Availability | Scalability | MAA @KnownAsMarkus www.linkedin.com/in/markusmichalewicz www.slideshare.net/MarkusMichalewicz Anil Nair Sr. Principal Product Manager Oracle Real Application Clusters (RAC) & ASM @RACMasterPM http://www.linkedin.com/in/anil-nair-01960b6 http://www.slideshare.net/AnilNair27/
- 2. Oracle Database –more ideas: https://blogs.oracle.com/exadata/horizontal-scaling-with-oracle-database Scalability and High Availability Choices – Simplified Overview Copyright © 2021, Oracle and/or its affiliates 2 Standbys Native Sharding (Active) Data Guard / Read Replicas Real Application Clusters (RAC) / RAC One Node
- 3. 1. Developer Productivity(due to transparency) 2. Integrated Scalability (for applications and features) 3. Seamless High Availability (for the stack) 4. Isolated Consolidation (for converged use cases) 5. Full Flexibility (choose ”when”, “where”, and “how”) The Top 5 Reasons to Deploy Your Applications on Oracle RAC Copyright © 2021, Oracle and/or its affiliates 3
- 4. 1. Developer Productivity(due to transparency) 2. Integrated Scalability (for applications and features) 3. Seamless High Availability (for the stack) 4. Isolated Consolidation (for converged use cases) 5. Full Flexibility (choose ”when”, “where”, and “how”) The Top 5 Reasons to Deploy Your Applications on Oracle RAC Copyright © 2021, Oracle and/or its affiliates 4
- 5. For connectivity, scalability,and seamless high availability starting with Oracle DB 12c Rel. 2 ALIAS =(DESCRIPTION = (CONNECT_TIMEOUT=90) (RETRY_COUNT=20)(RETRY_DELAY=3) (TRANSPORT_CONNECT_TIMEOUT=3) (ADDRESS_LIST = (LOAD_BALANCE=on) ( ADDRESS = (PROTOCOL = TCP)(HOST=primary-scan)(PORT=1521))) (ADDRESS_LIST = (LOAD_BALANCE=on) ( ADDRESS = (PROTOCOL = TCP)(HOST=secondary-scan)(PORT=1521))) (CONNECT_DATA=(SERVICE_NAME = MyService))) It starts with The TNS Connector String Copyright © 2021, Oracle and/or its affiliates 5 Replication For Single Instance DBs use single host name Use second entry only if Data Guard is used Empirically determined recommended values https://www.slideshare.net/MarkusMichalewicz/asktom-how-to-make-and-test-your-application-oracle-rac-ready
- 6. Using Oracle RAC,developers don’t need to worry about: • Connecting against the “right instance” • Database services guide connections to the right database / instance. • Client-side and server-side load balancing distribute workload. • Scaling • Nodes can transparently be removed from or added to the cluster. • Nodes can have different CPU / memory capacity (in ranges). • Parallelism – Parallel Execution can be set application independently. • Availability • No coding for failures, retries or failed “in-flight” / uncommitted transactions (optional with AC). Once Connected, Developers can go Straight to Work Copyright © 2021, Oracle and/or its affiliates 6
- 7. Example: Hang Manager •Available since Oracle Database 11g (11.1.0.7) • Enabled by default • Reliably detects database hangs • Including cross-layer hangs between ASM & DB • Automatically resolves hangs with • “normal” (default) sensitivity • “high” sensitivity – more alert to sessions waiting • Supports QoS Performance Classes, Ranks and Policies to maintain SLAs • Logs all detected deadlocks (*18c), hangs & their resolution • Hang Manager 12.2+ auto-tunes itself by periodically collecting instance- and cluster-wide hang statistics Automatically Benefit from inherent Oracle Database Features Copyright © 2021, Oracle and/or its affiliates 7 Session EVALUATE DETECT ANALYZE Hung? QoS Policy VERIFY Victim
- 8. Use Advanced Queuing(AQ) • DBMS_PIPE can be used with Oracle RAC, but application changes required to make it work outweigh benefits. • Use Advanced Queuing (AQ) instead, especially starting with Oracle Database 19c. Use Scalable Sequences • Use non-ordered & cached sequences if sequences are used to generate primary key. (Alternatives possible). • Use Scalable Sequences (new in 18c) Avoid write contention • Frequent transactional changes to the same / small data set in all instances may result in “write hot spots”. • Some derivation of this occurrence is likely the reason for a less than expected scaling results. • SQL optimization yields the highest improvement rate, especially for new workloads and newly developed apps. Optimize for New Applications Copyright © 2021, Oracle and/or its affiliates 8 NUM INC1() Sequence https://www.oracle.com/technetwork/database/options/clustering/overview/racappdevbp-3124851.pdf
- 9. 1. Developer Productivity(due to transparency) 2. Integrated Scalability (for applications and features) 3. Seamless High Availability (for the stack) 4. Isolated Consolidation (for converged use cases) 5. Full Flexibility (choose ”when”, “where”, and “how”) The Top 5 Reasons to Deploy Your Applications on Oracle RAC Copyright © 2021, Oracle and/or its affiliates 9
- 10. Due to itsmarket leading Cache Fusion algorithm, Oracle RAC scales 1. any feature – e.g. Pluggable Databases, Oracle In-Memory and Oracle Data Guard 2. most enterprise applications – e.g. Ebusiness Suite, SAP, Oracle Hospitality 3. nearly all custom applications as used by many of Oracle’s >18000 RAC customers • Without the need for significant application changes • Especially on Oracle Exadata Database Machines RAC Scales the Most Complex Enterprise Workloads Nearly Linearly Copyright © 2021, Oracle and/or its affiliates 10 0 5000 10000 15000 20000 25000 30000 35000 40000 4 8 32 48 64 80 2035 4010 15520 22416 30016 37040 # of Cores across Oracle RAC Nodes Users 2 Nodes 3 Nodes 4 Nodes 5 Nodes SAP certified SD Benchmark results
- 11. Oracle RAC scalesOLTP, DWH, and hybrid (transactional & analytical processing) workloads Customer-Proven Scalability for all Types of Workloads List is selective Copyright © 2021, Oracle and/or its affiliates 11
- 12. PayPal Database Requirements ScalabilityPerformance Availability Oracle RAC • Scale within an RAC Instance • Scale by adding RAC Instances • Rolling Upgrades with Zero Downtime WebCast replay: https://youtu.be/g-xz9C2IEvU
- 13. • Real Application Clusters(RAC) • Cache Fusion 9i • Connection Load Balancing • Load Balancing Advisory • Cluster Managed Services • Automatic Storage Management (ASM) 10g • Universal Connection Pool (UCP) • Distributed Transactions (XA) • Affinity Locking and Read-Mostly Objects • Parallel Execution Optimizations • Reader Bypass locking 11g • Session Affinity • PDB & Services Isolation • Leaf Block Split Optimizations • Multithreaded Cache Fusion • Self-Tuning LMS • Service-Oriented Buffer Cache 12c • Co-Location Tag for client routing • RAC Runtime Resource Management • Threaded Cache Fusion Processes • Right-Growing Index Performance improvements • In-Memory Transaction Table • Undo Block RDMA Reads 19c • RAC Sharding • Scalable Sequences • Undo RDMA-Read • Commit Cache 18c • Optimized Broadcast on Commit • RDMA for Current Read Blocks 21c For best scalability (so far) Use Oracle RAC 19c and later Copyright © 2021, Oracle and/or its affiliates 13
- 14. Example: out ofthe box scalable and dynamic data access • RAC scales to 100+ instances although in practice a much smaller number of instances is sufficient • Cache Fusion: Highly optimized data shipping for OLTP • Dynamically chooses the optimal path for data access: Local cache access in Nanoseconds Block shipping from remote cache in Microseconds Storage IO in Microseconds (Flash) or Milliseconds (Disk) • Data access latency does not grow with size of cluster • Function shipping via Parallel Execution (described next) for complex analytics or batch operations Oracle RAC with Cache Fusion – Always Ahead of its Time Copyright © 2021, Oracle and/or its affiliates 14 1 3 2 Buffer Cache RAC Instance 2 Consolidated pool of storage RAC Instance 1 Buffer Cache 1 3 2
- 15. Oracle Parallel ExecutionOptimizations • Parallel (query) execution maximizes utilization of all available CPU cores (in the RAC cluster) • A coordinator process allocates a background server processes that execute the statement in parallel • Completely transparent to the application Parallel Execution for Scaling-Out Processing Scale-Up Parallel servers can run within the same instance to maximize host CPU utilization Scale-Out Parallel servers can also run across across multiple Oracle RAC instances to utilize CPUs across multiple hosts Parallel Server Processes (same instance) Parallel Server Processes (local instance) Parallel Server Processes (local instance) Copyright © 2021, Oracle and/or its affiliates 15
- 16. Example: utilize RDMAfor • Propagating BoC (Broadcast on Commit) • Reduce messages • Reduce CPU usage on LMS • Current read blocks • Very common access pattern in various workloads • Commit Cache messaging • Results in reduced load on LMS from remote node • Undo block RDMA reads • https://www.slideshare.net/AnilNair27/oracle-rac-features-on-exadata Oracle RAC Integration and Optimization on Exadata Copyright © 2021, Oracle and/or its affiliates 16
- 17. 1. Developer Productivity(due to transparency) 2. Integrated Scalability (for applications and features) 3. Seamless High Availability (for the stack) 4. Isolated Consolidation (for converged use cases) 5. Full Flexibility (choose ”when”, “where”, and “how”) The Top 5 Reasons to Deploy Your Applications on Oracle RAC Copyright © 2021, Oracle and/or its affiliates 17
- 18. Upgrading to OracleRAC 19c and later Improves Availability Multiple projects and features contribute to Zero Brownout Reconfiguration 18c 19c 11.2 12c 4x faster 7x faster Oracle RAC reconfiguration times reduced by • 4x between Oracle RAC 11.2.0.4 and 12 Rel. 2 • 7x between Oracle RAC 11.2.0.4 and 19c Selection of contributing features: • Remastering Slaves (*12.1) • Support for 100 LMS’s (*12.2) • More Dynamic Remastering (*19c) • More Reconfig Optimizations (*19c) • Fault Tolerant Cache Fusion (*20c) • Near Zero Brownout for Planned Maintenance (*20c) • Automatic PDB Placement of PDB Resources (*20c) Copyright © 2021, Oracle and/or its affiliates 18
- 19. ORACLE RAC –Zero Downtime Zero Downtime with RAC Rolling Patches Out of Box <10 sec Optimized DRM Reconfiguration Brownout times
- 20. Developers: protect yourapplications from any interruption Application outage protection • For planned maintenance & unplanned outages • System outage protection alone does not ensure applications are uninterrupted • Application Continuity preserves session state & replays in-flight database transactions and reads • 100% transparent to the users and applications – fully automatic • Unique to Oracle! • Available with Oracle RAC and Active Data Guard • Default on Oracle Autonomous Database Application Continuity Copyright © 2021, Oracle and/or its affiliates 20
- 21. Choose the rightflavor for your application Application Continuity Copyright © 2021, Oracle and/or its affiliates 21 Transparent Application Continuity works with & without Oracle pools, some decisions are made for you Application Continuity uses Oracle pools, customizable https://www.oracle.com/technetwork/database/options/clustering/applicationcontinuity/learnmore/cvc-application-continuity-5393298.pdf
- 22. Reports the ProtectionProvided by Application Continuity ACchk Copyright © 2021, Oracle and/or its affiliates 22 Disable Reason ORA-41429: side effect detected Disable Reason ORA-41412: REPLAY_FAILED Action Required Disable Reason ORA-41409: commit
- 23. Oracle Clusterware protectsall kinds of applications Oracle Clusterware – the Foundation for Oracle RAC and More Copyright © 2021, Oracle and/or its affiliates 23
- 24. Database Reliability Framework| Autonomous Health Framework Adaptive Protection Copyright © 2021, Oracle and/or its affiliates 24 http://oracle.com/goto/ahf https://www.slideshare.net/MarkusMichalewicz/best-practices-for-the-most-impactful-oracle-database-18c-and-19c-features
- 25. 1. Developer Productivity(due to transparency) 2. Integrated Scalability (for applications and features) 3. Seamless High Availability (for the stack) 4. Isolated Consolidation (for converged use cases) 5. Full Flexibility (choose ”when”, “where”, and “how”) The Top 5 Reasons to Deploy Your Applications on Oracle RAC Copyright © 2021, Oracle and/or its affiliates 25
- 26. Converged Database Use Casesare Converging 26 Copyright © 2021, Oracle and/or its affiliates Phone calls, messaging, photos, etc. originally required separate products • Now they are features of Smartphones Similarly, ML, JSON, Blockchain, etc. originally required separate databases • Now they are features of a Converged Database
- 27. Use Cases areConverging for Good Reasons Developers innovate faster on a converged database It is dramatically simpler for developers to invoke extended SQL to execute ML, graph, spatial, blockchain, IoT, etc. in one converged database Instead of implementing distributed execution and data movement across multiple fragmented databases 27 EVENT RPC ETL REPLICATION DB LINKS EVENT RPC ETL REPLICATION DB LINKS EVENT RPC ETL REPLICATION DB LINKS EVENT RPC ETL REPLICATION DB LINKS Graph ML Doc Spatial Reporting Copyright © 2021, Oracle and/or its affiliates
- 28. Protect and scaleconverged workloads Oracle Multitenant & Oracle RAC Copyright © 2021, Oracle and/or its affiliates 28 DOC Reporting Spatial https://www.slideshare.net/MarkusMichalewicz/oracle-database-mission-critical
- 29. Available since OracleRAC 12.2 and constantly improved ever since • Prevents “noisy neighbors” from affecting others with unnecessary chatter • Prevents instance failures hosting singleton-only PDBs from affecting other instances PDB Isolation in Oracle RAC Copyright © 2021, Oracle and/or its affiliates NodeA Oracle Grid Infrastructure Oracle RAC NodeB Oracle Grid Infrastructure Oracle RAC cons_1 cons_2 MSG NodeA Oracle Grid Infrastructure Oracle RAC NodeB Oracle Grid Infrastructure Oracle RAC cons_1 cons_2 ✔ 29
- 30. Manage consolidation costs Flexible& Cost-Effective Consolidation with Oracle Multitenant Copyright © 2021, Oracle and/or its affiliates 30 9 PDBs in one CDB – requires Multitenant Option 3 PDBs (per CDB) free of charge with Oracle Database EE 3 Container Databases (CDB) with 3 PDBs each on 1 server
- 31. 1. Developer Productivity(due to transparency) 2. Integrated Scalability (for applications and features) 3. Seamless High Availability (for the stack) 4. Isolated Consolidation (for converged use cases) 5. Full Flexibility (choose ”when”, “where”, and “how”) The Top 5 Reasons to Deploy Your Applications on Oracle RAC Copyright © 2021, Oracle and/or its affiliates 31
- 32. 32 Sound foundation IncreaseHA & Scalability Protect from Disasters time sales / growth Improve HA as Demand Requires it Copyright © 2021, Oracle and/or its affiliates
- 33. Managers: Oracle Database+ Oracle RAC Option provide endless possibilities Combine as Needed Copyright © 2021, Oracle and/or its affiliates 33 Replication Real Application Clusters (RAC) RAC Sharding RAC + Data Guard https://blogs.oracle.com/exadata/horizontal-scaling-with-oracle-database
- 34. Deploy the SameSolutions On-Premises and in the Cloud Oracle Cloud Infrastructure is the only cloud certified and support for Oracle RAC 34 time sales / growth C@C Copyright © 2021, Oracle and/or its affiliates
- 35. 1. Developer Productivity(due to transparency) 2. Integrated Scalability (for applications and features) 3. Seamless High Availability (for the stack) 4. Isolated Consolidation (for converged use cases) 5. Full Flexibility (choose ”when”, “where”, and “how”) The Top 5 Reasons to Deploy Your Applications on Oracle RAC Copyright © 2021, Oracle and/or its affiliates 35 S u m m a r y
- 36. Oracle RAC isa proven, highly available, scalable, Oracle Cloud-native database solution Summary – The Reason to Deploy Your Applications on Oracle RAC Copyright © 2021, Oracle and/or its affiliates 36 ORACLE AUTONOMOUS DATABASE “If you have not looked into the New Generation Oracle RAC 19c yet, you have not experienced what Oracle RAC can do for you.” https://www.oracle.com/technetwork/database /options/clustering/overview/new-generation- oracle-rac-5975370.pdf
- 37. 37 Copyright ©2021, Oracle and/or its affiliates Thank you Markus Michalewicz ([email protected]) Vice President of Database Product Management @KnownAsMarkus www.linkedin.com/in/markusmichalewicz www.slideshare.net/MarkusMichalewicz
- 38. Our mission isto help people see data in new ways, discover insights, unlock endless possibilities.