Oracle In Loop Evaluation

I have an assignment to check the consistency of Oracle database for different conditions.I am having some 200+ columns i a table i need to populate data using prepare statement in .net and check the conditions how it works for each loop values.I am having loop values starting from 1,5,50,100.... 10000k i will increment the loop value as 1,5,50,100.... 10000k and need to get the start time and end time of each loop, i need to check the consistency of the database.

Value for the loop(1,5,50,100.... 10000k) will be from a xml file or text file
For the 200+ Columns i am having 2PK's.

CONDIDTIONS

1)Whether i need to restart for every loop value say if i run loop value as 1 then i need to restart the system (not the services) and run for loop value 5 and restart and so on.
2)Whether i need to restart for every loop value say if i run loop value as 1 then i need to restart the services and run for loop value 5 and restart services and so on.
3)Whether i can continue my loop value starting from 1,5...10000k without restart or any other process continuously running starting from 1...10000k in single go

why i am asking this is whether Oracle will act as differently when i do the above process and will there be any performance improvement or performance variations from the above steps if i followed. Whether there be same value for all the three steps or will there be variation in from time and end time for each conditions.

I need to check for insertion time(time difference b/w from time and then loop condition and then end time) for each loop.