Technical Interview Round 1:In the Technical Interview Round, a video or phone call is scheduled with the candidate, and his coding skills are assessed. The interviewer generally asks two questions to the candidate based on Data Structures and Algorithms. Technical Interview Round 2:This is a per...
What are bind parameter and lexical parameter used for? A bind reference replaces a single value or expression.To create a bind reference in a query, prefix the parameter name with a colon ( . A lexical reference is a text string and can replace any part of a SELECT statement, such as ...
In this article, we will discuss some frequently asked Oracle interview questions and provide detailed answers to help you succeed in your interview. 1. What is Oracle? Oracle is a powerful and highly popular relational database management system developed by Oracle Corporation. It is used to ...
16 :: what is difference between Co-related sub query and nested sub query? Co-related sub query is one in which inner query is evaluated only once and from that result outerquery is evaluated.Nested query is one in which Inner query is evaluated for multiple times for getting one row of...
34. What SQL query from v$session can you run to show how many sessions are logged in as aparticular user account? 35. Why does Oracle not permit the use of PCTUSED with indexes? 36. What would you use to improve performance on an insert statement that places millions of rowsinto that...
//howtodoinjava.com/2013/11/24/jdbc-select-query-example/ 9. How to get data from HashMap? //howtodoinjava.com/java/interviews-questions/how-hashmap-works-in-java/ 10. Difference between Vector and ArrayList? //howtodoinjava.com/java/collections/useful-java-collection-interview-questions/...
ORACLE DBA 面试题集 一:SQL tuning 类 1 列举几种表连接方式 等连接、非等连接、自连接、外连接(左、右、全) 2 不借助第三方工具,怎样查看 sql 的执行计划 I) 使用 Explain Plan,查询 PLAN_TABLE; EXPLAIN PLAN SET STATEMENT_ID='QUERY1' FOR SELECT * FROM a WHERE aa=1; SELECT operation, options...
OracleDBAInterviewQuestionsByBG 1.Howmanymemorylayersareinthesharedpool? 2.HowdoyoufindoutfromtheRMANcatalogifaparticulararchiveloghasbeen backed-up? 3.Howcanyoutellhowmuchspaceisleftonagivenfilesystemandhowmuchspace eachofthefilesystem'ssubdirectoriestake-up?
To generate a report of all full and incremental backups from an Oracle Enterprise Manager (OEM) database, you can use the following SQL query. This query retrieves information from the…Read more » Mastering Oracle Database: Interview Questions and Answers ...
Oracle DBA Interview Questions By B G 1. How many memory layers are in the shared pool? 2. How do you find out from the RMAN catalog if a particular archive log has been backed-up? 3. How can you tell how much space is left on a given file system and how much space each of th...