Oracle General Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Oracle General Interview Questions

Questions Answers Views Company eMail

Why does Oracle not permit the use of PCTUSED with indexes?

2424

What would you use to improve performance on an insert statement that places millions of rows into that table?

1 3719

What would you do with an in-doubt distributed transaction?

1979

What are the commands youd issue to show the explain plan for select

2 5282

In what script is snap$ created? In what script is the scott/tiger schema created?

2708

If youre unsure in which script a sys or system-owned object is created, but you know its in a script from a specific directory, what UNIX command from that directory structure can you run to find your answer?

2149

How would you configure your networking files to connect to a database by the name of DSS which resides in domain icallinc.com?

1916

You create a private database link and upon connection, fails with: ORA-2085: connects to . What is the problem? How would you go about resolving this error?

1 8968

I have my backup RMAN script called backup_rman.sh. I am on the target database. My catalog username/password is rman/rman. My catalog db is called rman. How would you run this shell script from the O/S such that it would run as a background process?

1 4018

Explain the concept of the DUAL table.

2 6085

What are the ways tablespaces can be managed and how do they differ?

2367

From the database level, how can you tell under which time zone a database is operating?

1 3180

Whats the benefit of dbms_stats over analyze?

2002

Typically, where is the conventional directory structure chosen for Oracle binaries to reside?

2144

You have found corruption in a tablespace that contains static tables that are part of a database that is in NOARCHIVE log mode. How would you restore the tablespace without losing new data in the other tablespaces?

1929

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Un-Answered Questions { Oracle General }

State the difference between a primary key and foreign key?

935

Can group functions be mixed with non-group selection fields?

1020

How would you change old and new values in an insert, delete and update triggers?

1022

What is an oracle database?

1035

What is the usage of control file in oracle?

1088

There are n numbers of flatfile of exactly same format are placed in a folder.Can we load these flatfile's data one by one to a single relational table by a single session??

2026

Â What are the oracle DML commands possible through an update strategy?

1063

What happens if you set the sga too low in oracle?

1150

What exactly do quotation marks around the table name do?

963

What are the original export and import utilities?

1170

Explain oracle data types with examples?

1028

How to view existing locks on the database?

1053

In not less than 100 words what's the main difference between Rolap and Molap in ORACLE ?

2286

What is difference between truncate and delete?

1040

How remove data files before opening a database?

1072

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