{"id":10287,"date":"2023-05-02T11:25:02","date_gmt":"2023-05-02T11:25:02","guid":{"rendered":"https:\/\/www.scmgalaxy.com\/tutorials\/?p=10287"},"modified":"2023-06-19T13:29:43","modified_gmt":"2023-06-19T13:29:43","slug":"top-50-oracle-interview-questions-with-answers","status":"publish","type":"post","link":"https:\/\/www.scmgalaxy.com\/tutorials\/top-50-oracle-interview-questions-with-answers\/","title":{"rendered":"Top 50 Oracle Interview Questions with Answers"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.scmgalaxy.com\/tutorials\/wp-content\/uploads\/2023\/05\/image-56.png\" alt=\"\" class=\"wp-image-10288\" width=\"681\" height=\"360\" srcset=\"https:\/\/www.scmgalaxy.com\/tutorials\/wp-content\/uploads\/2023\/05\/image-56.png 850w, https:\/\/www.scmgalaxy.com\/tutorials\/wp-content\/uploads\/2023\/05\/image-56-300x159.png 300w, https:\/\/www.scmgalaxy.com\/tutorials\/wp-content\/uploads\/2023\/05\/image-56-768x407.png 768w\" sizes=\"auto, (max-width: 681px) 100vw, 681px\" \/><figcaption class=\"wp-element-caption\"><strong><em>Oracle Interview Questions with Answers<\/em><\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<ol class=\"wp-block-list\">\n<li>Which of the following is not a SQL aggregate function?<br>a) COUNT<br>b) SUM<br>c) AVG<br>d) UPDATE<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d) UPDATE<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>Which of the following SQL commands is used to return all rows from a table?<br>a) SELECT *<br>b) SELECT ALL<br>c) SELECT SOME<br>d) SELECT DISTINCT<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) SELECT *<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>Which Oracle database component manages user security and authentication?<br>a) Database Administrator (DBA)<br>b) Oracle Internet Directory (OID)<br>c) Oracle Identity Manager (OIM)<br>d) Oracle Access Manager (OAM)<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) Oracle Internet Directory (OID)<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"4\">\n<li>Which of the following is not a type of join in SQL?<br>a) INNER JOIN<br>b) OUTER JOIN<br>c) FULL JOIN<br>d) CROSS JOIN<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) FULL JOIN<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"5\">\n<li>Which Oracle tool is used for monitoring database performance and diagnosing problems?<br>a) Oracle Grid Infrastructure<br>b) Oracle Enterprise Manager<br>c) Oracle Data Guard<br>d) Oracle Real Application Clusters<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) Oracle Enterprise Manager<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"6\">\n<li>Which SQL keyword is used to sort data in descending order?<br>a) ASC<br>b) DESC<br>c) ORDER BY<br>d) GROUP BY<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) DESC<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"7\">\n<li>Which of the following data types can store only numeric values with no decimal places in Oracle?<br>a) NUMBER<br>b) INTEGER<br>c) FLOAT<br>d) BINARY_INTEGER<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) INTEGER<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"8\">\n<li>Which built-in Oracle package can be used to send email from the database?<br>a) DBMS_OUTPUT<br>b) UTL_SMTP<br>c) DBMS_SCHEDULER<br>d) UTL_FILE<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) UTL_SMTP<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"9\">\n<li>Which Oracle feature allows a single database instance to support multiple databases?<br>a) Oracle Real Application Clusters<br>b) Oracle Grid Infrastructure<br>c) Oracle Multitenant<br>d) Oracle GoldenGate<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) Oracle Multitenant<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"10\">\n<li>Which SQL keyword is used to limit the number of rows returned in a query?<br>a) LIMIT<br>b) OFFSET<br>c) TOP<br>d) ROWNUM<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d) ROWNUM<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"11\">\n<li>Which Oracle database component handles memory management and optimization?<br>a) System Global Area (SGA)<br>b) Program Global Area (PGA)<br>c) Oracle Shared Server (OSS)<br>d) Oracle Real Application Clusters (RAC)<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) System Global Area (SGA)<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"12\">\n<li>Which SQL keyword is used to group data in a query?<br>a) GROUP BY<br>b) ORDER BY<br>c) DIVIDE BY<br>d) MULTIPLY BY<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) GROUP BY<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"13\">\n<li>Which Oracle database component is responsible for managing database backups?<br>a) Oracle Recovery Manager (RMAN)<br>b) Oracle Data Guard<br>c) Oracle Advanced Security<br>d) Oracle Internet Directory (OID)<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) Oracle Recovery Manager (RMAN)<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"14\">\n<li>Which SQL keyword is used to filter data in a query with multiple conditions?<br>a) OR<br>b) AND<br>c) NOT<br>d) XOR<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) AND<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"15\">\n<li>Which Oracle tool provides an interface for administering the database?<br>a) Oracle Data Guard<br>b) Oracle Net Manager<br>c) Oracle Enterprise Manager<br>d) Oracle Performance Analyzer<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) Oracle Enterprise Manager<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"16\">\n<li>Which SQL function is used to find the highest value in a column?<br>a) MAX<br>b) MIN<br>c) AVG<br>d) SUM<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) MAX<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"17\">\n<li>Which Oracle tool provides real-time performance monitoring and tuning recommendations?<br>a) Oracle Tuning Pack<br>b) Oracle Real Application Testing<br>c) Oracle Diagnostics Pack<br>d) Oracle Database Vault<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) Oracle Tuning Pack<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"18\">\n<li>Which SQL keyword is used to specify a condition in a query?<br>a) WHERE<br>b) WHEN<br>c) IF<br>d) THEN<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) WHERE<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"19\">\n<li>Which Oracle database component allows simultaneous access to a single database by multiple users?<br>a) Oracle Shared Server (OSS)<br>b) Oracle Real Application Clusters (RAC)<br>c) Oracle Internet Directory (OID)<br>d) Oracle Advanced Security<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) Oracle Shared Server (OSS)<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"20\">\n<li>Which SQL function is used to find the average value of a column?<br>a) AVG<br>b) MIN<br>c) MAX<br>d) SUM<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) AVG<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"21\">\n<li>Which Oracle tool allows developers to design and deploy web applications and web services?<br>a) Oracle Application Express (APEX)<br>b) Oracle Forms<br>c) Oracle WebLogic Server<br>d) Oracle Business Intelligence Enterprise Edition (OBIEE)<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) Oracle Application Express (APEX)<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"22\">\n<li>Which SQL keyword is used to return only the distinct values in a column?<br>a) DISTINCT<br>b) UNIQUE<br>c) ALL<br>d) SAME<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) DISTINCT<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"23\">\n<li>Which Oracle database component is used for data replication and disaster recovery?<br>a) Oracle Database Vault<br>b) Oracle Data Guard<br>c) Oracle Streams<br>d) Oracle GoldenGate<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) Oracle Data Guard<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"24\">\n<li>Which SQL keyword is used to join multiple tables in a query?<br>a) JOIN<br>b) MERGE<br>c) COMBINE<br>d) UNITE<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) JOIN<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"25\">\n<li>Which Oracle tool provides security policies and controls for database access?<br>a) Oracle Database Vault<br>b) Oracle Label Security<br>c) Oracle Advanced Security<br>d) Oracle Audit Vault and Database Firewall<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) Oracle Database Vault<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"26\">\n<li>Which SQL function is used to find the lowest value in a column?<br>a) MIN<br>b) MAX<br>c) AVG<br>d) SUM<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) MIN<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"27\">\n<li>Which Oracle database component is used for workload management and resource allocation?<br>a) Oracle Grid Infrastructure<br>b) Oracle Real Application Clusters (RAC)<br>c) Oracle Resource Manager<br>d) Oracle Automatic Storage Management (ASM)<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) Oracle Resource Manager<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"28\">\n<li>Which SQL keyword is used to retrieve data from multiple tables using a common column?<br>a) UNION<br>b) MINUS<br>c) INTERSECT<br>d) JOIN<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d) JOIN<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"29\">\n<li>Which Oracle tool provides automated database testing and workload analysis?<br>a) Oracle Real Application Testing<br>b) Oracle Data Guard<br>c) Oracle Diagnostics Pack<br>d) Oracle Enterprise Manager<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) Oracle Real Application Testing<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"30\">\n<li>Which SQL function is used to concatenate columns or strings together?<br>a) CONCAT<br>b) STRCAT<br>c) MERGE<br>d) JOIN<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) CONCAT<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"31\">\n<li>Which Oracle database component provides automatic storage optimization and redundancy?<br>a) Oracle Real Application Clusters (RAC)<br>b) Oracle Automatic Storage Management (ASM)<br>c) Oracle Shared Server (OSS)<br>d) Oracle Streams<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) Oracle Automatic Storage Management (ASM)<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"32\">\n<li>Which SQL keyword is used to modify data in a table?<br>a) INSERT<br>b) DELETE<br>c) UPDATE<br>d) REPLACE<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) UPDATE<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"33\">\n<li>Which Oracle database component provides workload isolation and management for application services?<br>a) Oracle Database Vault<br>b) Oracle Label Security<br>c) Oracle Resource Manager<br>d) Oracle Streams<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) Oracle Resource Manager<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"34\">\n<li>Which SQL function is used to count the number of rows in a table?<br>a) ROWCOUNT<br>b) ROWSUM<br>c) ROWAVERAGE<br>d) COUNT<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d) COUNT<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"35\">\n<li>Which Oracle tool provides database backup and recovery automation?<br>a) Oracle Data Guard<br>b) Oracle Flashback<br>c) Oracle Recovery Manager (RMAN)<br>d) Oracle Advanced Security<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) Oracle Recovery Manager (RMAN)<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"36\">\n<li>Which SQL keyword is used to create a new table?<br>a) ADD<br>b) CREATE<br>c) ALTER<br>d) MODIFY<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) CREATE<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"37\">\n<li>Which Oracle database component provides high availability and automatic failover?<br>a) Oracle Streams<br>b) Oracle Advanced Security<br>c) Oracle Real Application Clusters (RAC)<br>d) Oracle Data Guard<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) Oracle Real Application Clusters (RAC)<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"38\">\n<li>Which SQL function is used to convert a value to a character string?<br>a) STR<br>b) CONVERT<br>c) CAST<br>d) MESSAGE<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) CAST<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"39\">\n<li>Which Oracle tool provides data modeling and design capabilities?<br>a) Oracle SQL Developer Data Modeler<br>b) Oracle Application Express (APEX)<br>c) Oracle Forms<br>d) Oracle BI Publisher<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) Oracle SQL Developer Data Modeler<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"40\">\n<li>Which SQL keyword is used to delete data from a table?<br>a) DELETE<br>b) REMOVE<br>c) ERASE<br>d) ELIMINATE<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) DELETE<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"41\">\n<li>Which Oracle database component provides secure storage and encryption of database data?<br>a) Oracle Advanced Security<br>b) Oracle Label Security<br>c) Oracle Data Guard<br>d) Oracle Transparent Data Encryption<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d) Oracle Transparent Data Encryption<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"42\">\n<li>Which SQL function is used to round a numeric value to a specified number of decimal places?<br>a) ROUND<br>b) FLOOR<br>c) CEIL<br>d) TRUNC<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) ROUND<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"43\">\n<li>Which Oracle tool provides database performance monitoring and analysis?<br>a) Oracle Enterprise Manager<br>b) Oracle Diagnostics Pack<br>c) Oracle Real Application Testing<br>d) Oracle Application Express (APEX)<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) Oracle Diagnostics Pack<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"44\">\n<li>Which SQL keyword is used to update data in a table?<br>a) MODIFY<br>b) ALTER<br>c) REPLACE<br>d) UPDATE<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d) UPDATE<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"45\">\n<li>Which Oracle database component provides data replication and synchronization across multiple databases?<br>a) Oracle Streams<br>b) Oracle Data Guard<br>c) Oracle Database Vault<br>d) Oracle GoldenGate<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d) Oracle GoldenGate<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"46\">\n<li>Which SQL function is used to calculate the difference between two dates?<br>a) DATEDIFF<br>b) DIFFDATE<br>c) DATEADD<br>d) SYSDATE<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) DATEDIFF<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"47\">\n<li>Which Oracle tool provides centralized database management for multiple databases?<br>a) Oracle Enterprise Manager<br>b) Oracle Grid Infrastructure<br>c) Oracle Advanced Security<br>d) Oracle Real Application Clusters (RAC)<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) Oracle Enterprise Manager<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"48\">\n<li>Which SQL keyword is used to add a new column to a table?<br>a) ADD COLUMN<br>b) ALTER COLUMN<br>c) NEW COLUMN<br>d) COLUMN ADD<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) ADD COLUMN<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"49\">\n<li>Which Oracle database component provides data masking and subsetting capabilities for test databases?<br>a) Oracle Virtual Private Database (VPD)<br>b) Oracle Diagnostic Pack<br>c) Oracle Database Vault<br>d) Oracle Enterprise Manager<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) Oracle Virtual Private Database (VPD)<\/h4>\n\n\n\n<ol class=\"wp-block-list\" start=\"50\">\n<li>Which SQL function is used to find the length of a string?<br>a) LENGTH<br>b) SIZE<br>c) COUNT<br>d) SUM<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) LENGTH<\/h4>\n","protected":false},"excerpt":{"rendered":"<p>Answer: d) UPDATE Answer: a) SELECT * Answer: b) Oracle Internet Directory (OID) Answer: c) FULL JOIN Answer: b) Oracle [&hellip;]<\/p>\n","protected":false},"author":33,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_joinchat":[],"footnotes":""},"categories":[1],"tags":[],"class_list":["post-10287","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Top 50 Oracle Interview Questions with Answers - scmGalaxy<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.scmgalaxy.com\/tutorials\/top-50-oracle-interview-questions-with-answers\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Top 50 Oracle Interview Questions with Answers - scmGalaxy\" 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