Every extra line of code decreases the performance of code. After all, it is an extra instruction to be executed, which at least consumes some CPU. So yes, dbms_output.put_line decreases the performance.
The real question is: does the benefit of this extra line of code outweigh the performance penalty? Only you can answer that question.
Regards,
Rob.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…