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Oracle Interview Questions & Answers

Below we have listed all the Oracle Interview Questions and answers. Feel free to comment on any Oracle Interview Questions or answer by the comment feature available on the page.

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Subcategories for Oracle Interview Questions - The following are sub categories for which Interview Questions are available under this category. Please select the appropriate sub-category:
Backup and Recovery Interview Questions (28)

Concepts and Architecture Interview Questions (62)

Data Access Interview Questions (66)

Database Administration Interview Questions (124)

Database Security Interview Questions (96)

Distributed Processing Interview Questions (50)

General Oracle Interview Questions (199)

Memory Management Interview Questions (187)

ONT Interview Questions (12)

Oracle Architecture Interview Questions (46)

Oracle Backup and Recovery Interview Questions (14)

Oracle Forms 3.0 Interview Questions (65)

Oracle Forms 4.0 Interview Questions (65)

PL-SQL Interview Questions (220)

Programmatic Constructs Interview Questions (21)

Scenarios Interview Questions (61)

SQL In Oracle Interview Questions (97)

SQL Plus Interview Questions (122)

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With SQL, how can you return the number of records in the ?Persons? table? a) SELECT COLUMNS (*) FROM Persons b) SELECT COLUMNS () FROM Persons c) SELECT COUNTS () FROM Persons d) SELECT COUNTS (*) FROM Persons View Answer

How many codds rule should oracle satisfies View Answer

Which command will ?bounce? the database-that is, shut down the database and start up the database in a single command? View Answer

What is the difference between Anonymous Block and subprogram? Can we call a procedure from Anonymous PL/SQL block? View Answer

What is the maximum number of database writer processes allowed in an Oracle instance? View Answer

How to get a calender in date field in oracle forms? View Answer

If the application is running very slow? At what points you need to go about the database in order to improve the performance? View Answer

What is function overloading?an example of function overloading in oracle? View Answer

What is Restricted Mode of Instance Startup ? View Answer

What does the parameter DIRECT=Y in the export parameter file signify? a. When exporting table data, bypass the SQL buffer cache and read the data blocks directly form the disk to the export file. b. When exporting table data, bypass the SQL processing layer and read data from disk to the buffer cache, and copy them directly to the export files c. When importing data using the export file create, write data blocks directly to the file, rather than going through the buffer. d. To perform a direct import, the export file must be created sing the direct method. View Answer

what is place holder column? where we can use other than formula column? View Answer

The initialization parameter file has LOG_CHECKPOINT_INTERVAL = 60; What does this mean? View Answer

What is Current record attribute property? View Answer

What is pseudo columns ? Name them? View Answer

How many control files are required to create a database? View Answer

What is the difference between object library and pl/sql library View Answer

When does the SMON process automatically coalesce the tablespaces? View Answer

What is the difference between groupby and orderby? View Answer

What information is available in the alert log files? View Answer

What happens if you issue the following command? ALTER DATABASE ADD LOGFILE (?/logs/file1? REUSE, ?/logs/file2? REUSE) View Answer

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