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<br /> <meta http-equiv="Content-type" content="text/html;charset=UTF-8"/></p> <p id="oracle-database-20c">The most recent Innovation launch of the world’s hottest database, Oracle Database 21c, is now typically out there “cloud first” within the Oracle Cloud <a target="_blank" href="https://www.oracle.com/database/vm-cloud.html" rel="noopener noreferrer">Database Service Virtual Machine</a> (for RAC and single occasion) and <a target="_blank" href="https://www.oracle.com/database/bare-metal-cloud.html" rel="noopener noreferrer">Bare Metal Service</a> (single occasion). It is also out there within the <a target="_blank" href="https://www.oracle.com/cloud/free/" rel="noopener noreferrer">Autonomous Database Free Tier Service</a> in Ashburn (IAD), Phoenix (PHX), Frankfurt (FRA) and London (LHR) areas. Basic availability of Oracle Database 21c for on-prem platforms (together with Exadata, Linux and Home windows) will observe alongside in 2021.</p> <h2 id="converged-database">Enabling a Information-Pushed Future</h2> <p>Oracle has persistently taken the strategy that storing and managing information in a <a target="_blank" href="https://www.oracle.com/a/otn/docs/database/oracle-converged-database-technicalbrief.pdf" rel="noopener noreferrer">converged database</a> is extra environment friendly and productive than breaking apart into a number of single-use engines – which inevitably ends in information integrity, consistency and safety points. Merely put, a converged database is a multi-model, <a target="_blank" href="https://www.oracle.com/database/multitenant/" rel="noopener noreferrer">multi-tenant</a>, multi-workload database. Oracle Database absolutely helps a number of information fashions and entry strategies, simplifies consolidation whereas guaranteeing isolation, and excels in typical database workload use instances – each operational and analytical. Click on the picture under for a video introduction to Oracle’s converged database.</p> <p style="margin-left: 160px;"><a target="_blank" href="https://youtu.be/yBWgb_oh39U" rel="noopener noreferrer"></a></p> <p>The 21c technology of Oracle’s converged database subsequently gives clients: better of breed help for all information varieties (e.g. relational, JSON, XML, spatial, graph, OLAP, and so on.), and industry-leading efficiency, scalability, availability and safety for all their <a target="_blank" href="https://urldefense.com/v3/__https://www.gartner.com/reprints/?id=1-24DBXALO&ct=201014&st=sb__;!!GqivPVa7Brio!L9FC82YlEE6TRdQmsPVHmXMqgjUUhHkb2C6VSwXEQ-FZzHn-XhmYxS5KtP55i97mx2Q$" rel="noopener noreferrer">operational</a>, <a target="_blank" href="https://urldefense.com/v3/__https://www.gartner.com/reprints/?id=1-24DBXALL&ct=201014&st=sb__;!!GqivPVa7Brio!O-K679NePcI6e8P2DR5CdZLBl1uYMRaHYROpEadu25PQ6BfVtX1zobHuL-DGbMJWhNc$" rel="noopener noreferrer">analytical</a> and different combined workloads. Oracle’s converged technique additionally ensures that builders profit from all Oracle Database 21c key capabilities (e.g. ACID transactions, learn consistency, parallel scans and DML, on-line backups, and so on.) – liberating them to give attention to growing functions with out having to fret about information persistence.</p> <h2 id="oracle-database-20c-new-features">New in Oracle Database 21c</h2> <p>This newest Innovation launch introduces a lot of new options and enhancements that additional prolong database use instances, improves developer, analyst and information scientist productiveness, and will increase question efficiency.  Listed under is a subset of what is new in Oracle Database 21c. For a extra complete assessment please consult with the <a target="_blank" href="https://docs.oracle.com/en/database/oracle/oracle-database/21/whats-new.html" rel="noopener noreferrer">New Features Guide</a> or the <a target="_blank" href="https://apex.oracle.com/database-features/" rel="noopener noreferrer">Database Features & Licensing App</a>. Or, you possibly can take a <a target="_blank" href="https://apexapps.oracle.com/pls/apex/dbpm/r/livelabs/view-workshop?wec=0062-EFBV-XCFU-DLHQ" rel="noopener noreferrer">tour of Oracle Database 21c in Oracle LiveLab’s New Features workshop</a>!</p> <h3 id="blockchain-tables">Blockchain Tables</h3> <p>Blockchain as a know-how has promised a lot when it comes to fixing most of the issues related to the verification of transactions. Whereas appreciable progress has been made in bringing this know-how to the enterprise, a lot of issues exist. Arguably, the most important being the complicated nature of constructing functions that may help a distributed ledger. Oracle Database 21c addresses this drawback with the introduction of <a target="_blank" href="https://www.oracle.com/blockchain/" rel="noopener noreferrer">Blockchain Tables</a>. These tables function like every regular heap desk, however with a lot of vital variations. Essentially the most notable of those being that rows are cryptographically hashed as they’re inserted into the desk, guaranteeing that the row can now not be modified at a later date.</p> <p><img alt="" style="width: 400px; height: 352px;" data-src="/wp-content/uploads/2021/01/1609990523_44_Introducing-Oracle-Database-21c-Oracle-Blogs.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="" src="/wp-content/uploads/2021/01/1609990523_44_Introducing-Oracle-Database-21c-Oracle-Blogs.png" style="width: 400px; height: 352px;"/></noscript></p> <p>This basically creates an insert solely desk, and customers are unable to replace or delete Blockchain Desk rows. As well as, customers are additionally prevented from truncating information, dropping partitions or dropping Blockchain Tables inside sure closing dates. These vital capabilities imply that different customers can belief that the info held in a Blockchain Desk is an correct file of occasions. </p> <h3 id="native-json-datatype">Native JSON Datatype</h3> <p>Oracle launched help for JSON in Oracle Database 12c, storing JSON information as a VARCHAR2 or a LOB (CLOB or BLOB). This enabled builders to construct functions with the flexibleness of a schemaless design mannequin, with all the facility of Oracle Database. For instance, customers may question JSON paperwork utilizing commonplace SQL, make the most of superior analytics, index particular person attributes or entire paperwork, and course of billions of JSON paperwork in parallel. Oracle additionally offered instruments to find what attributes make up the JSON paperwork, and thereby trivially create relational views on prime of the collections. It was additionally potential for builders to deal with their Oracle Database as if it had been a NoSQL database by accessing it with the SODA (Easy Object Information API) APIs out there for Java, Node.js, Python, C and REST.</p> <p>In Oracle Database 21c, JSON help is additional enhanced by providing a Native information sort, “JSON”. Which means as an alternative of getting to parse JSON on learn or replace operations, the parse solely occurs on an insert and the JSON is then held in an inner binary format which makes entry a lot sooner. This can lead to learn and replace operations being Four or 5 occasions sooner and updates to very giant JSON paperwork being 20 to 30 occasions sooner.</p> <pre class="hljs"> <code>CREATE TABLE j_order (   id     INTEGER PRIMARY KEY, po_doc JSON ); </code></pre> <p>The brand new information sort wasn’t the one change that acquired launched for JSON in Oracle Database 21c, Oracle additionally added a brand new JSON operate JSON_TRANSFORM which makes it a lot easier to replace and take away a number of attributes in a doc in a single operation.</p> <pre class="hljs">  <code>UPDATE j_order SET po_doc = JSON_TRANSFORM( po_doc,   SET '$.deal with.metropolis' = 'Santa Cruz',   REMOVE'$.telephones[*]?(@.sort == "workplace")'   ) WHERE id = 555; </code></pre> <p>Oracle has additionally added compatibility for the brand new JSON datatype to integration drivers and utilities like Datapump and GoldenGate.</p> <h3>Executing JavaScript inside Oracle Database</h3> <p>JavaScript is a ubiquitous scripting language that, amongst its many makes use of, permits richer person interplay in net functions and cell apps. It is one of many few languages that runs in an internet browser, and can be utilized to develop each client-side and server-side code. There’s a giant assortment of current JavaScript libraries for implementing complicated applications, and JavaScript works together with well-liked improvement applied sciences akin to JSON and REST.</p> <p>In Oracle Database 21c, builders can now execute JavaScript code snippets contained in the database, the place the info resides. This permits them to execute brief computational duties simply expressed in JavaScript, with out having to maneuver the info to a mid-tier or browser. The Multilingual Engine (MLE) in Oracle Database 21c, powered by <a target="_blank" href="https://www.graalvm.org" rel="noopener noreferrer">GraalVM</a>, mechanically maps JavaScript information varieties to Oracle Database information varieties and vice versa in order that builders don’t should take care of information sort conversion themselves. Moreover, the JavaScript code itself can execute PL/SQL and SQL via a built-in JavaScript module. All this additionally permits APEX builders to make use of JavaScript as a first-class language inside their APEX apps, with out having to sacrifice the facility of PL/SQL and SQL. Right here is a few pattern code that makes use of the DBMS_MLE PL/SQL package deal to execute JavaScript code:</p> <pre class="hljs"> <code>set serveroutput on; DECLARE   ctx dbms_mle.context_handle_t;   supply CLOB;   greeting VARCHAR2(100); BEGIN   ctx := dbms_mle.create_context(); -- Create execution context for MLE execution   dbms_mle.export_to_mle(ctx, 'particular person', 'World'); -- Export worth from PL/SQL   supply := q'~     var bindings = require("mle-js-bindings");     var particular person = bindings.importValue("particular person"); // Import worth beforehand exported from PL/SQL     var greeting = "Hey, " + particular person + "!";     bindings.exportValue("greeting", greeting); // Export worth to PL/SQL   ~';   dbms_mle.eval(ctx, 'JAVASCRIPT', supply); -- Consider the supply code snippet within the execution context   dbms_mle.import_from_mle(ctx, 'greeting', greeting); -- Import worth beforehand exported from MLE   dbms_output.put_line('Greetings from MLE: ' || greeting);   dbms_mle.drop_context(ctx); -- Drop the execution context as soon as now not required END; /</code></pre> <h3>SQL Macros</h3> <p>It’s commonplace for a SQL assertion to develop in complexity because the variety of joins improve, or the operations carried out on the retrieved information turns into extra concerned. It’s additionally not unusual for builders to try to remedy this drawback through the use of saved procedures and desk features to simplify these generally used operations. This works extraordinarily properly to simplify code, however can doubtlessly sacrifice efficiency because the SQL engine switches context with the PL/SQL Engine. In Oracle Database 21c, SQL Macros remedy this drawback by permitting SQL expressions and desk features to get replaced by calls to saved procedures which return a string literal to be inserted within the SQL we wish to execute. It is an extremely easy idea and one which C and Rust programmers will probably be conversant in. The next trivial instance reveals it in motion.</p> <p>First, let’s create a desk and insert a number of rows.</p> <pre class="hljs"> <code>CREATE TABLE line_items (   id        NUMBER,    identify      VARCHAR2(30),    item_type VARCHAR2(30),    value     FLOAT ); INSERT INTO line_items VALUES (1, 'Pink Pink Wine', 'ALCOHOL', 15.6); INSERT INTO line_items VALUES (2, 'Its Chilly Out There Heater', 'RADIATOR', 200.49); INSERT INTO line_items VALUES (3, 'How Candy It Is Cake', 'FOOD', 4.56); COMMIT; </code> </pre> <p>The SQL under calculates the worth added tax on rows in our LINE_ITEMS desk</p> <pre class="hljs"> <code>SELECT id, CASE   WHEN item_type = 'ALCOHOL' THEN ROUND(1.2 * value, 2)   WHEN item_type = 'SOLAR PANEL' THEN ROUND(1.05 * value, 2)   WHEN item_type = 'RADIATOR' THEN ROUND(1.05 * value, 2)   ELSE value   END AS total_price_with_tax FROM line_items; </code></pre> <p>Nonetheless, Oracle Database 21c can simplify by making a operate with the brand new SQL_MACRO key phrase and returning a string.</p> <pre class="hljs"> <code>CREATE OR REPLACE FUNCTION total_price_with_tax(the_price FLOAT, the_item_type VARCHAR2)   RETURN VARCHAR2 SQL_MACRO(SCALAR) IS BEGIN   RETURN q'[CASE     WHEN the_item_type = 'ALCOHOL'     THEN ROUND(1.2 * the_price, 2)     WHEN the_item_type = 'SOLAR PANEL' THEN ROUND(1.05 * the_price, 2)     WHEN the_item_type = 'RADIATOR'    THEN ROUND(1.05 * the_price, 2)     ELSE the_price END]'; END; / </code></pre> <p>Builders then merely reference the SQL Macro inside a choose assertion. The SQL that is executed is precisely the identical as the unique SQL Assertion with out the overhead of a context swap every time the row is fetched to execute this operate.</p> <pre class="hljs"> <code>SQL> SELECT id, total_price_with_tax(value, item_type) AS total_price_with_tax FROM line_items; ID TOTAL_PRICE_WITH_TAX ---------- -------------------- 1 18.72 2 210.51 3 4.56 </code></pre> <p>It is also price noting that builders can use the identical strategy when creating Parameterized Views and Polymorphic Tables.</p> <h3 id="oracle-database-in-memory-enhancements">In-Reminiscence Enhancements</h3> <p>Analyzing information utilizing a columnar mannequin can lead to huge efficiency enhancements as in comparison with utilizing a row-based mannequin. Nonetheless, updating information is considerably sooner when utilizing information held in rows. Oracle Database In-Reminiscence is exclusive in that it permits customers to learn from each approaches. With this functionality customers can run their functions unchanged and Oracle Database In-Reminiscence will preserve a columnar retailer supporting blazingly quick real-time analytical queries. <a target="_blank" href="https://blogs.oracle.com/in-memory/" rel="noopener noreferrer">The Oracle Database In-Memory Blog</a> is a implausible useful resource for locating out extra about this highly effective know-how.</p> <p>Oracle Database 21c introduces three main enhancements to reinforce efficiency and ease of use when utilizing Oracle Database In-Reminiscence:</p> <ul> <li><strong>Database In-Reminiscence Vector Joins</strong> : By means of the usage of its newly enhanced Deep Vectorization SIMD Framework, Oracle Database In-Reminiscence can speed up operations like hash joins on columns held within the in-memory column retailer. Within the case of a hash be a part of, the be a part of is damaged down into smaller operations that may be handed to the vector processor. The important thing-value desk used is SIMD optimized and used to match rows on the left and right-hand sides of the be a part of. This strategy can lead to be a part of efficiency enhancements of as much as 10 occasions over conventional strategies.</li> <li><b>Self-Managing In-Reminiscence Column Retailer</b> : When Oracle Database In-Reminiscence was first launched, customers needed to explicitly declare which columns had been to be populated into the In-Reminiscence Column Retailer. This gave customers a excessive diploma of management if reminiscence was tight. Oracle Database 18c launched performance that will mechanically place objects within the Column Retailer if they’re actively used and eliminated objects that weren’t. Nonetheless, customers nonetheless needed to point out the objects to be thought-about. In Oracle Database 21c setting INMEMORY_AUTOMATIC_LEVEL to HIGH, ensures that each one objects are thought-about – thereby simplifying the job of managing the in-memory column retailer.</li> <li><strong>In-Reminiscence Hybrid Columnar Scans</strong> : It’s usually not potential to have each column of each desk populated within the Column Retailer as a result of reminiscence is proscribed. In lots of situations, this is not a problem however each every so often customers might encounter a question which wants information(columns) from the Column Retailer and information that is solely out there within the row retailer. In earlier releases of Oracle Database In-Reminiscence, such querys would merely run in opposition to the row retailer. In Oracle Database 21c customers can now use each! The optimizer can now elect to scan the In-Reminiscence Column Retailer and fetch projected column values from the row retailer if wanted. This can lead to a major enhancements in efficiency.</li> </ul> <p style="text-align: center;"><img alt="Hybrid Columnar Scan" style="width: 500px; height: 462px;" data-src="/wp-content/uploads/2021/01/1609990523_190_Introducing-Oracle-Database-21c-Oracle-Blogs.png" class="lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img alt="Hybrid Columnar Scan" src="/wp-content/uploads/2021/01/1609990523_190_Introducing-Oracle-Database-21c-Oracle-Blogs.png" style="width: 500px; height: 462px;"/></noscript></p> <p style="text-align: center;">Hybrid Columnar Scan</p> <h3> </h3> <h3 id="other-notable-enhancements">Different Notable Enhancements</h3> <p>Please consult with the <a target="_blank" href="https://docs.oracle.com/en/database/oracle/oracle-database/21/newft/index.html" rel="noopener noreferrer">Oracle Database 21c New Features Guide</a> for full (lengthy) listing, however listed here are a number of extra notable enhancements that will probably be of curiosity to DBAs, builders, analysts and information scientists:</p> <ul> <li><strong>Expression based mostly init.ora parameters</strong> : It is now potential to base database parameters (init.ora) on calculations made on the configuration of the system, i.e. set the database parameter CPU_COUNT on half the variety of CPUs out there to the working system.</li> <li><strong>Automated Zone Maps</strong> : Oracle Database 21c on Exadata can now mechanically create Zone Maps based mostly on the predicates utilized in queries. Beforehand, this was a handbook operation requiring customers to know how the info could be accessed. Automated zone maps can dramatically cut back the variety of blocks that should be scanned.</li> <li><strong>In-Database Machine Studying</strong> (ML) algorithms constructed into Oracle Database permits information scientists to leverage the facility of Oracle Database to construct predictive fashions (utilizing over 30 ML algorithms) operating straight on information held in database tables (versus extracting information right into a file system or specialist database for ‘sandbox’ evaluation). Oracle’s strategy of shifting ML algorithms to the underlying information minimizes information motion, achieves scalability, preserves information safety, and accelerates time-to-model deployment for predictive-type analytics Oracle Database 21c provides help for the MSET-SPRT and XGBoost algorithms, and the Adam Optimization solver for the Neural Community Algorithm.</li> <li><b>AutoML</b> : Oracle Database 21c makes it even easier for information scientists and analysts to make the most of in-database machine studying by offering a Python machine studying interfaces to the database. This new consumer software compliments current R and SQL interfaces already out there. AutoML simplifies the event of predictive machine studying fashions by automating the mannequin choice, characteristic choice and parameter tuning processes required for constructing correct fashions</li> <li><b>Optimized Graph Fashions</b> : Graphs can include tens of millions and even billions of edges and vertices and so the storage optimizations we have made to the graph capabilities in Oracle Database 21c preview launch can lead to large area and efficiency enhancements to your fashions.</li> <li><strong>Sharding Enhancements</strong> : To make it simpler to develop Java functions in opposition to Oracle Sharding we have launched a brand new Java Information Supply that makes it easy to acquire connections with out having to outline the shard key or handle the connection key explicitly. We now have additionally made sharding extra fault-tolerant by mechanically searching for alternates if the shard you might be engaged on fails throughout execution.</li> <li><strong>Persistent Reminiscence (PMEM) Help</strong> : Oracle Database 21c consists of help for PMEM file methods that may provide important latency and bandwidth enhancements over conventional file methods that use SSD or spinning disks. Nonetheless, the functions utilizing them want to know the best way to safely write to them and probably the most environment friendly method to make use of them together with different OS sources. Oracle Database 21c’s implementation offers atomic writes, secure guarding in opposition to partial writes throughout surprising energy outages. It additionally gives Quick I/O operations utilizing reminiscence copy. As well as, it effectively makes use of database buffer cache by bypassing and studying straight from PMEM storage.</li> </ul> <h2>Innovation and Lengthy Time period Releases</h2> <p>Oracle Database 21c is an <a target="_blank" href="https://blogs.oracle.com/database/icymi-oracle-database-releases-and-support-coverage" rel="noopener noreferrer">Innovation release</a> for patrons to innovate sooner with new and enhanced performance on workload use instances and functions that would profit accordingly. Prospects must be conscious that not like Lengthy Time period releases, Innovation releases have a restricted help window (sometimes ~2-years). Subsequently, within the pursuits of sustaining enterprise continuity, clients nonetheless operating on prior releases (e.g. 11gR2, 12cR1, 12cR2, 18c) are inspired to improve to Oracle Database 19c – the present Lengthy Time period launch with help via to April 2027.</p> <p>For the newest Oracle Database 21c availability and help home windows on all on-premise platforms (together with Exadata) and in Oracle Cloud (together with Autonomous Database Companies) please consult with <a target="_blank" href="https://support.oracle.com/epmos/faces/DocumentDisplay?id=742060.1&displayIndex=1" rel="noopener noreferrer">MyOracle Support (MOS) note 742060.1</a>.</p> </p></div> <p>[*]<script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script> <!-- chiraginline --> <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-6520824844144684" data-ad-slot="7998515221" data-ad-format="auto" data-full-width-responsive="true"></ins> <script> (adsbygoogle = 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