- INTERVIEW QUESTIONS FOR ORACLE SQL DEVELOPER HOW TO
- INTERVIEW QUESTIONS FOR ORACLE SQL DEVELOPER CODE
Accordingly, there are four different methods which are used for tracing.
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INTERVIEW QUESTIONS FOR ORACLE SQL DEVELOPER CODE
Tracing code can be described as an important function which is used to measure the performance of the code during the runtime. Can you highlight the various methods used to trace the PL/SQL code? The error codes in PL/SQL Exception falls between the range of -20000 to -20899.ĥ. Can you describe the range of the Error Codes in PL/SQL Exceptions? Explain the process to rollback a particular part of a procedure or any PL/SQL Program.ĭuring definition of a PL/SQL program, Savepoints allows you to rollback part of a transaction instead of the whole transaction.Ĥ. In addition, there are four different cursor attributes listed as under:ģ. There are two types of cursors available: Implicit Cursors and Explicit Cursors. It is used in order to process multiple records and also record by record tabs. Can you explain what a Cursor is along with its different attributes?Ĭursor is a temporary buffer area which has been created in the system memory when an SQL statement is executed. The three advisory statistics that can be collected are:Ģ.
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Can you describe 3 advisory statistics that you can gather? To make things easy and help you succeed, we have listed eight PL/SQL interview questions below.ġ. It is important to know that first impressions matter and could very well be the decisive factor in getting that job you’ve been trying for. Join Question_Tags as qt on qt.question_id = q.Being prepared for your PL/SQL interview is the most important step in your job search process. Join Questions as q on a2.question_id = q.question_id Join Accepted_Answers as a1 on u.user_id = a1.user_id The (possible) answer (assuming an Accepted_Answers view and a Target_Language_Tags table with the desired tags): select distinct u.user_name Select all stack overflow users that have accepted answers in questions tagged with the 10 most popular programming languages. Select the names of the pilots who can fly every plane in the hangar. Given the following tables, representing pilots that can fly planes and planes in a hangar: create table PilotSkills ( The question comes straigh from this link.
INTERVIEW QUESTIONS FOR ORACLE SQL DEVELOPER HOW TO
I would ask the difference in results between these three queries: select a.field1Īn interesting question would involve relational division, or how to express a "for all" relationship, which would require nested not exists clauses. If it involved writing reports, I would want to know that they understand aggregates and grouping (As well as Crystal Reports or SSRS or whatever ereporting tool you use). If the job involved imports and exports I would ask questions about SSIS (or other tools involved in doing this used by other datbases).
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I would give them some cursor examples and ask how they would rewrite them to make them set-based. If you don't understand operating in sets, you can't effectively query a relational database. I would give a badly written query and ask them how they would go about performance tuning it. It would be better to spot the problem and fix your query.
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