Need help in regarding Oracle PLSQL developer interview questions

Question

Hi all,
I am totally new in this field regarding plsql. I have just finished training in oracle plsql and in oracle financials. But for starting career i am looking jobs as:Oracle plsql developer. Can somebody help me what type of questions people going to ask? I am not confident yet, i have made my resume but for submitting resume i just want to be aware for the interview questions. Can somebody help me in telling me good questions and answers as to what to prepare?
Thanks in advance.

Answer 1

1.
Do you have experience in Oracle 10g? If so, what are your favorite new features? (shows depth of experience and how well they are keeping up with technology)
2.
Partitioning (Practical Scenarios)
1.
Have you ever worked with partitioned tables? Example:
2.
What types of partitioning?
3.
What types of indexing, global or local? Why did you choose global or local?
4.
What do you see in SQL that is accessing partitioned tables that enables Oracle to take advantage of partitioning?
5.
What is partition pruning?
3.
PL/SQL Bulk Features
1.
Have you ever used PL/SQL bulk features? Which ones? Can you provide an example?
2.
What makes bulk processing faster?
3.
What PL/SQL data constructs are required to use bulk features?
4.
Oracle Collections
1.
What are the three types of collections?
2.
When would you use a varray versus a nested table?
5.
Global Temporary Tables
1.
Have you ever used Global Temporary Tables? Example:
2.
How does Oracle treat Global Temporary Tables differently than regular tables, making them faster?
6.
Autonomous Transactions
1.
What is an autonomous transaction? Example:
7.
SQL Tuning
1.
Someone comes to you with a SQL statement that is running slow, what are some potential problems that can be identified just by looking at the SQL statement?
2.
What are the steps you follow in the database to tune SQL?
8.
Locking Techniques
1.
Types of Locks
1.
Optimistic
2.
Pessimistic
3.
Lock Escalation
9.
Autonomous transactions, where to use examples if any
10.
Difference between Truncate and Delete Statement
11.
PL/SQL tables, index by tables, VARRAY, associate arrays, differences and when to use
12.
Performance tuning related, Using Explain plan, SQL* Plus auto trace, and using tkprof
13.
Different types of joins oracle uses ( Hash join, Merge Join, Nested loop join)
14.
Oracle SQL ANSI syntax ( JOIN USING, JOIN ON, LEFT OUTER JOIN,RIGHT OUTER JOIN etc..)
15.
dbms_profiler package uses
16.
Unit testing approach, if you know and worked on out PLSQL frame work for automatic testing, its big advantageous
17.
Oracle approach for read consistency, what is SCN, dirty reads, phantom reads etc..
18.
Standards ( Coding standards, naming standards etc.) , There are guidelines and naming standards for variables, package, procedure, function names, database object names etc…( Be prepared what standards you followed in previous projects )
19.
Snapshot too old error, fetch out of sequence error when it comes, should be able to explain.
20.
Oracle block, what it contains. Row chaining, row migration concepts
21.
Version control software’s (experience in clearcase and clearquest is big advantage). If you have not used these, know about the importance of these and be prepared to explain which ones you used in previous projects, and how the PL/SQL code used to deploy.
22.
Oracle server architecture, know about oracle memory structures, background processes overview