I am trying to import the dump file to .sql file using SQLFILE parameter.
I used the command \"impdp username/password DIRECTORY=dir DUMPFILE=sample.dmp SQLFILE=sample.s
Your expectation was wrong, I'm afraid. You're asking it to do something it isn't designed for.
The documentation for SQLFILE says:
Purpose
Specifies a file into which all of the SQL DDL that Import would have executed, based on other parameters, is written.
So it will only ever contain DDL.
There isn't a mechanism to turn a .dmp
file into a .sql
containing insert statements. If you need to put the data into a table, just use the native import.
Individual insert statements - if you could generate them, which SQL Developer will do as a separate task unrelated to your data pump export - would be slower, would have problems with LOBs, and would have to be careful about the order they were run unless integrity constraints were disabled. Data pump takes care of all of that for you.