为什么plsql直接执行很快,调试的话很慢?

为什么plsql直接执行很快,调试的话很慢

 

对同一个存储过程，直接F8几秒钟就执行完了，但是F9单步调试执行到execute immediate v_sql就很慢很慢，这是什么原因？

 

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