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                    how to execute a sql*plus script from pl/sql block.my script contains sql plus set commands. how to execute that script in a pl/sql block i.e. either anonymous ,procedure or function or trigger 
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                    polymorphismwhat are the issue one should care implementing polymorphism. 
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                    How to save a path in command prompt to recall it later.How can I save a path to my favorites in command prompt to recall it later? 
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