Each shardgroup contains all the data in the shardspace. The following diagram is a reference architecture for Oracle Sharding with Oracle GoldenGate for in-region high availability of each shard. It allows you to horizontally partition and scale your data across independent databases. Active Data Guard requires additional licensing. These processes allow you to set up a bidirectional replication to ensure high availability of your database if there is availability zone-level downtime. These files are then transferred asynchronously to the standby database. Oracle GoldenGate has processes such as Extract, Pump, and Replicat that help you asynchronously replicate your data from one Oracle database server to another. A similar architecture can even be deployed using Oracle GoldenGate. The shard catalog database also acts as a query coordinator used to process multi-shard queries and queries that do not specify a sharding key. Read more about Oracle Data Guard Far Sync in this Oracle Active Data Guard Far Sync whitepaper. Like any cloud provider, Oracle is responsible for the security of the underlying cloud infrastructure, such as data centers, hardware, and software systems, while customers are responsible for securing communication in and out of the cloud, protecting applications, and configuring services such as compute, network, storage, and database. In Azure regions where Availability zones are not yet present, customers can use Availability Sets and achieve an uptime SLA of 99.95%. h�b```�"f�CB ���'x%�49 The Oracle Cloud Infrastructure is the optimal place to run Hyperion EPM. In addition, this command automatically deploys the replication configuration used for shard-level high availability specified by the administrator. The application server uses connection pooling in data access drivers. Oracle Cloud Reference Oracle Products – Architecture – helps you enable you to build manage and govern this enterprise-grade private change and accelerate and public Clouds. There are different ways to shard a database: Read more about the different sharding methods in Oracle's documentation. Any planned OS-level maintenance is communicated to customers in advance to allow the customer for this planned maintenance. It is recommended that you replicate your shards for high availability and disaster recovery. This setup can be done using Oracle technologies such as Oracle Data Guard or Oracle GoldenGate. The recommendation is to deploy at least one GSM/shard director per data center/region. This feature is available in drivers such as JDBC, ODP.NET, OCI, etc. Oracle Architecture Center. Duplicated tables are stored on all shards, whereas sharded tables are distributed across different shards. Azure Application Gateway also supports sticky sessions, so any requests coming from the same client are routed to the same application server. I�?�|�Ѱ\`G �eᆐ0י32��2R�lO```4�v�� Read more about configuring high availability and replication of your sharded database in Oracle Sharding documentation. The application server queries the primary Oracle database. Each shardgroup has multiple shards and is a "unit" of replication, in this case. The Oracle* Optimized Solution for Enterprise Cloud Infrastructure makes use of pre- This is automatically configured and deployed when the shared database is created. Detailed Reference Architecture: Azure NetApp Files for Oracle In Figure 1, you can see that the Oracle database datafiles and logs are configured on Azure NetApp Files. In the preceding architecture, a GSM/shard director is deployed in every availability zone for high availability. This setup also reduces the overhead on the primary database, because it only has to send the redo to the Far Sync instance rather than all the standby databases. Its modular architecture gives you the flexibility to extract and replicate selected data records, transactional changes, and changes to DDL (data definition language) across a variety of topologies. See Continuous Delivery and Blue/Green Deployments to understand how it can be used in the context of your Oracle databases. 621 0 obj <>stream Additionally, an instance of the application server is deployed in every availability zone that contains a shardgroup. System-managed sharding - Automatically distributes across shards using partitioning, User-defined sharding - Allows you to specify the mapping of the data to the shards, which works well when there are regulatory or data-localization requirements), Composite sharding - A combination of system-managed and user-defined sharding for different. With Oracle Database version 12.2 and above, it is also possible to configure multiple observers with a single Oracle Data Guard broker configuration. The preceding reference architecture uses the system-managed sharding method to shard the data. Oracle GoldenGate allows you to configure your database for high availability by providing bidirectional replication. When possible, consider using Azure Application Gateway to load-balance traffic between your application servers. In the preceding architecture, shardgroup A and shardgroup B both contain the same data but reside in different availability zones. When using Oracle Data Guard, you may also open your secondary database for read-only purposes. Always consult your AWR report and the metrics in Azure to understand the usage pattern of your server. Patching and maintaining your Oracle database can be automated and scheduled using Azure Pipelines or Azure Automation Update Management to minimize downtime. It's recommended that you set up performance tests between your application tier and your database tier in different availability zones and/or regions to confirm that it meets your application performance requirements. Using Oracle Data Guard in conjunction with availability zones or availability sets for shard catalog high availability is a recommended best practice. This architecture allows you to get a VM uptime SLA of 99.99%. Azure Application Gateway is a robust web traffic load balancer. Far Sync is a lightweight Oracle instance that only has a control file, password file, spfile, and standby logs. This document is intended to be a reference for the design of a storage infrastructure that supports Oracle® Applications Unlimited and Oracle ® Database environments. It is assumed that Oracle Data Guard (or Active Data Guard) is used for HA/DR purposes. This capability allows you to protect against data loss in if your database machine fails. Depending on the distance between the primary and secondary databases and the application tolerance for latency, you can set up synchronous or asynchronous replication. For added resiliency, customers may deploy multiple Far Sync instances per each database instance (primary and secondaries). During the initial request, the application server connects to the shard director in its region to get routing information for the shard that the request needs to be routed to. To minimize conflicts, Oracle Sharding designates a "master chunk" for each range of hash values. Achieving high availability in the cloud is an important part of every organization's planning and design. 38. Review the following Oracle reference articles that apply to your scenario. While the preceding architecture diagram shows the Data Pump and Replicat process configured on a separate server, you may set up all the Oracle GoldenGate processes on the same server, based on the capacity and usage of your server. Finally, when migrating or creating applications for the cloud, it's important to tweak your application code to add cloud-native patterns such as retry pattern and circuit breaker pattern. In addition to all the properties of a database service, a global service has properties for sharded databases such as region affinity between clients and shard and replication lag tolerance. This routing is fast and is used for all OLTP workloads that perform intra-shard transactions. Oracle Data Guard can be used for sharding with system-managed, user-defined, and composite sharding methods. Each shard in the shardgroup can have a different replication factor. For added availability, consider setting up multiple Far Sync instances close to your primary database and at least one instance close to your standby database (if the role transitions). Use a Maximum Availability mode to set up synchronous transport of your redo files to the Far Sync instance. Data Guard maintains standby databases as transactionally consistent copies of the primary database. (-���=�*_Ƹ����A<2�I��$���y�fƄ��f�s{�Y�����,�T"_�m�2�J� ��k The following diagram is a reference architecture for Oracle Sharding with Oracle Data Guard used for high availability of each shard. For this reason, Oracle recommends using Oracle Data Guard with your database (whether single instance or RAC) for high availability. This expert guidance was contributed by AWS cloud architecture experts, including AWS Solutions Architects, Professional Services Consultants, and … Public virtual interfaces are also supported by Megaport; however, they’re not relevant for this architecture. I just ran across a white paper from Oracle called Database as a Service: Reference Architecture - Overview. Although the Oracle Cloud Infrastructure documentation site is a fantastic repository for service- and product-related content, we saw an opportunity to highlight “architecture assets.” These assets, which include reference architectures, best practices, sample code, design patterns, and training content, help you build more effectively in Oracle Cloud Infrastructure. MapR Data Platform Reference Architecture for Oracle Cloud Infrastructure Deployments. When running Oracle Databases across multiple availability zones in conjunction with Oracle Data Guard or GoldenGate, customers are able to get an uptime SLA of 99.99%. Oracle Database 12c introduced a feature called Data Guard Far Sync Instance. %PDF-1.5 %���� Availability sets allow you to achieve a VM uptime of 99.95%. Please connect with your Oracle representative to discuss the licensing implications. This document presents typical architectures that you can use as a reference for managing corporate identities. The Data Guard broker and the secondary database both run the observer and observe the primary database for downtime. Oracle Reference Architecture (ORA) •Single, unified reference architecture across the (Oracle) technology space •Supports architecture entry point •Built on sound architecture principles •Product agnostic, yet complementary to Oracle •Modular & extensible •Content builds out over multiple iterations •New technologies and strategies Details best practices for running MapR Data Platform (MapR) on Oracle Cloud Infrastructure. Here's my review. For more information and limitations of implementing GoldenGate with Oracle Sharding, see Oracle's documentation on using Oracle GoldenGate with a sharded database. Similarly, with a replication factor of 3 and three shards in your shardgroup, all the data in each shard will be replicated to every other shard in the shardgroup. Oracle DB migrations can be accomplished in multiple ways. "m[RW The architecture diagram will likely differ for applications with different requirements for data locality, load balancing, high availability, disaster recovery, etc. 9 | mapr data platform reference architecture for oracle cloud infrastructure deployments By design, there is no deny rule for network traffic on Oracle Cloud Infrastructure in a VCN because the default behavior is to deny. Only one Global service needs to be created to read/write data to/from a sharded database. The web frontend is configured in a load balancer. The GDSCTL DEPLOY command automatically creates the shards and their respective listeners. AWS Reference Architecture NSX Logical Networks span two Availability Zones, with a vSANWitness deployed into the third AZ. Data Guard Broker is lightweight and can be hosted on a relatively small virtual machine. An Architect’s Guide to the Oracle Private Database Cloud Oracle Reference Architectures covering the application infrastructure foundation, management and monitoring, security, software engineering, service-oriented integration, service orientation, user interaction, engineered systems, and a master glossary. This architecture covers one of these options wherein Oracle Active Data Guard is used to migrate the Database. This guide covers reference architectures for each of these solutions. Composite sharding is a combination of system-managed and user-defined sharding and thus provides the benefit of both methods. A unit of replication can be a shard, a part of a shard, or a group of shards. Google Cloud Solutions Architecture Reference Infrastructure Modernization. Oracle Data Guard Far Sync needs to be installed on a separate VM. In addition, this guide dives into disaster recovery considerations. Then, the data is further partitioned by consistent hash across multiple shards in the shardspace. The Oracle database has been configured using a hyperthreaded memory optimized virtual machine with constrained core vCPUs to save on licensing costs and maximize performance. It provides cookie-based session affinity that keeps a user session on the same server, thus minimizing the conflicts on the database. Patching your virtual machine operating system can be automated using Azure Automation Update Management. These architectures have been created based on customer deployments. The Oracle Enterprise Manager VM need not be placed in an availability set as there is only one instances of OEM being deployed. However, Azure offers features such as Azure offers Availability Zones and planned maintenance windows to help protect against instance-level failures. Customers generally require a high SLA for running their mission critical applications. It is a share-nothing architecture where each database is hosted on a dedicated virtual machine, which enables high read and write throughput in addition to resiliency and increased availability. The latency between availability zones and regions could vary and depends on multiple factors. In the preceding diagram, the Extract process runs on the same server as your Oracle database, whereas the Data Pump and Replicat processes run on a separate server in the same availability zone. Overview . When using Active Data Guard and setting up read-only replicas of the shards, you can create another gGobal service for read-only workloads. More information about these components can be found in Oracle Sharding documentation: Shard catalog - Special-purpose Oracle database that is a persistent store for all Shard database configuration data. The way the data gets replicated depends on the replication factor. Tweak your application code to add cloud-native patterns such as. You can even monitor the different shards for availability and performance using Cloud control. Design and implement your cloud, hybrid, and on-premises workloads using our catalog of cross-product reference architectures, solution playbooks, and … NOTE: You can have a uptime target that is much higher than the uptime SLA provided by Microsoft. Oracle Universal Connection Pool (UCP) for JDBC clients can enable non-Oracle application clients such as Apache Tomcat and IIS to work with Oracle Sharding. In regions where availability zones aren't supported, you may use availability sets to deploy your Oracle Database in a highly available manner.