Database services are very important for a company because if they have a good team of developers but a poor database management system then the software is not at all worthy. In this article, we will talk about one of the best database service providers that are Oracle Database 19c. Oracle Database 19c is built on top of the improvements and innovations of the previous releases such as Sharding, multitenant, JSON object support, and several other features. Let’s understand more about it.
Oracle Database 19c – Table of Contents
What is Oracle Database 19c?
Oracle Database 19c is a multi-model database that offers support for relational as well as non-relational data like graph, text, spatial, etc. Besides, this database enables the SQL access to non-relational data with the help of native APIs and SQL extensions. This version of Oracle database is the final one and therefore it is a long-term support release from the family of Oracle Database 12c. In this, long term support signifies 4 years of premium support and 3 years of minimum extended support. Oracle’s database offers market-leading performance, security, scalability, and reliability. It works well for both on-premise and in the cloud. Moreover, it provides the longest time frame for bug fixes and support and the highest level of release stability.
Why Oracle Database 19c?
Oracle Database 19c gives the best performance for customer’s most demanding operational and analytical workloads. A company’s IT complexity is reduced with a converged database. Moreover, it provides the best database solutions, features, and services that an organization requires to fulfill its needs. For instance, it secures all of your data and avoids all kinds of fragmentation and risk that are common with single-purpose databases. Besides, it simplifies database management by easily managing, tuning, and backing up the data to ensure the best overall availability and performance. Lastly, it frees up all the application developers from redundant data and complex transformations with the help of a single-purpose database.
Why you should use Oracle Database 19c?
Whenever we talk about buying new software or a new application, we always ask one question that is why should I choose this software over the others? Similarly, you might be wondering that what Oracle database 19c has that I should go with it. The reason is that it introduces new features that help the administrators to deliver the best level of service to their end-users. The innovations are:
- Cost-based optimization: Automatic statistics gathering, SQL plan management, tuning, and query optimization.
- Performance tuning and diagnostics: Automatic database workload capture, memory management, resource management, and workload repository.
- Data Optimization: Automatic undo management, columnar cache, and storage management.
- Cloud-scale operation: Automatic database clone refresh, standby management, and diagnostic framework.
Moreover, it eliminates human error through –
- Self-repairing
- Self-driving
- Self-securing
Oracle Database 19c Features
Oracle Database 19c comes with a lot of features and functions to offer the customers the best performance, reliability, security, and scalability for all of their analytical and operational workloads.
Installations and upgrades –
- DryRun mode for GridSetup in the Clusterware Installation
- RPM Based Installation
- Docker Container for Oracle 19c
- Simplified Image-based installation
- Auto Upgrade Utility for the Oracle Database
General –
- Schema-only accounts – Passwords have been removed from Oracle Database Accounts
- Clear flashback logs
- Hybrid Partitioned Tables
- Passwords are removed from user accounts (default accounts)
- New ALTER SYSTEM statement clause that is FLUSH PASSWORDFILE_METADATA_CACHE
- Flush Metadata Cache for Passwords
- Multi-model partitioning with Hybrid partitioning
Database Performance –
- SQL Quarantine – The resource manager automatically quarantines the SQL statements in Oracle Database 19c. If a user tries to issue one again, it will not run at all.
- Automatic Indexing – If the system thinks that a database table will be benefitted from an index then it will create the index and will mark it invisible so that it can’t be used.
- SQL statement diagnosability – This comes with SQL test case and advisor repair for procedures.
- ADDM Support – This is for pluggable databases.
- Real-time statistics for DML Operations – This extends the online support to conventional DML statements.
- Automatic flashback of standby databases – The DBA can put standby database in mount mode along with no managed recovery.
- Automatic statistic collection on custom frequency – The automatic optimizer statistics collection is the one that complements the standard statistics collection job.
Oracle Database 19c Architecture
The Oracle single-instance database architecture consists of one database instance and one database. The instance handles memory and processes whereas the database contains data files. It can be a multitenant container or non-container database. A relationship exists between the instance and the database and multiple single-instance databases can be established on the same server. So, for each database, there are separate instances.
However, Oracle RAC (Real application cluster) database architecture has multiple instances running on separate server machines. They share the same database. On one end, the cluster of server machines acts as a single server whereas on the other end there are end-users and applications. This is a configuration that is designed especially for high-end performance, scalability, and availability.
A database instance has a set of background processes and memory structures. A listener is a database server process that receives requests from clients, establishes a connection, and hands over the connection to the server process. The architecture is also designed in a way that it creates the server processes to handle the connections on behalf of clients and then perform the work for the programs of the client.
Oracle Database 19c Benefits
Oracle database 19c takes the customer’s management of enterprise data to the next level with the long list of benefits that it provides helping them through their journey to the cloud.
- It comes with a multitenant architecture that has features like PDB hot clone, refresh, and relocate. It is useful because it provides faster deployment of revisions, upgrades and updates, transportable backups, snapshot carousel, and refreshable PDB switchover.
- Oracle Database 19c enhances the overall performance of the organization as it has automatic indexes, database in-memory, memoptimized rowstore, quarantine SQL statements, and real-time statistics collection features.
- Customers are offered a high availability with planned downtime and unplanned downtime enhancing the data availability. Also, native database sharding, active-standby DML redirect, and zero data loss recovery appliance is promised.
- It makes the application development easy with the help of application express, rest data services, SQL developer, JSON support, live SQL, and database on docker.
- Lastly, this software offers an in-depth multi-layered approach to protect the customer’s sensitive data from the threat of malicious attacks by blocking unauthorized access to data and much more.
Oracle Database 19c New Offerings
Oracle software developers always keep improving their software and application for better customer satisfaction and experience. In their Oracle Database 19c, they added a few new features and fixed some bugs. Their main focus was on application development, availability, security, big data, data warehousing, performance, diagnosability, database overall, and RAC and grid this time. List of features that have been included:
- Automatic indexing
- Real-time statistics
- Active data guard DML redirection
- Finer granularity supplemental logging
- Auto upgrade
- Automatic resolution of SQL plan regressions
- Oracle network log file segmentation
- Test mode for transportable tablespaces
- Hybrid partitioned tables
Advantages and Disadvantages of Oracle Database 19c
No doubt database system software is always helpful for a business. Again, Oracle database 19c is something that every company wishes to use but consider these advantages and disadvantages that are covered in this section before jumping to a conclusion.
Advantages –
- Oracle Database 19c can support intensive workloads.
- It has PL/SQL that offers an efficient way to start developing data-intensive processes. So, they can interact with the data without the need to transfer it to an app server.
- There are some features such as partitioning, encryption, and compression that enhance the performance, reduce the costs, and secure all the information in the Oracle database.
- It does security and compliance very well without much configuration.
- Oracle Database 19c is the most robust, secure, and reliable database in the market till now.
- Finally, customers get a lot of add-in packs that strengthen and complement the ecosystem.
Disadvantages –
- Several features in it require additional licensing that further increase the total cost.
- There is always room for better automated and integrated SQL tuning.
- It is quite more costly as compared to other solutions available in the market for small to medium-sized businesses.
- The support team of Oracle database 19c is slow to respond and they are unwilling to answer the customer queries sometimes.
- Lastly, Oracle training is expensive. Thus, it needs a lot of technical knowledge to use it. Moreover, it is a bit less user-friendly.