I imported data from excel file into oracle sql developer. After having filled in all tables I tried to see the insertion code, but I couldn't. Can you tell me where I can find it?
I don't understand you question.
Sql Developer is NOT a database so you could not have 'imported data from excel' into it.
Also - what does 'having filled in all tables' mean? And what is 'insertion code'?
Explain EXACTLY what you did and what version of sql developer you did it with.