What is an external table?
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I have table-A(1,2,3)& table-B(3,4,5).what is the different b/w below questions? A union all B? B union all A?
Explain enable novalidate constraint.
Explain oracle instance.
how to insert the image in table
Database crashes. Corruption is found scattered among the file system neither of your doing nor of Oracles. What database recovery options are available? Database is in archive log mode.
How do I reset a sequence in oracle?
How do you get nicely formatted results from an oracle procedure that returns a reference cursor?
How to update values in a table in oracle?
How oracle handles dead locks?
How to write numeric literals in oracle?
What is set operator oracle?
What are the differences between a sys and system user and what are the extra privileges available to the sys user?