Please suggest Partition for following example urgent

Question

Hi all
my table have one column Year
I need to create 2 partition year_1,year_2 for year column but synario is
If 2004 ,2005 2004 must go into year_2 and 2005 must go into year_1
also for 2006 must go into year_1 and 2005 into year_2
Please suggest type of partition if possible with example
Regards

Answer 1

> I need to create 2 partition year_1,year_2 for year column
<snipped>
An exceedingly bad idea to partition a date range like this - stuff some data into one partition and some other data into another partition, without any logical condition that governs what data must go into which partition.
So do not create just two partitions. Decide on the partitioning strategy you want based on criteria such as:
a) volume of data
b) access to data (i.e. predicates used)
c) data management requirements (e.g. removing or aging old data from the table)
Satyaki's example shows you the basics of how this should be done. A partition by year. Or, monthly or even daily partitions. And possibly even sub-partitions.
You will be achieving nothing in terms of performance or data management by trying to stuff date ranged data into two partitions as you are indicating.
As for future yearly partitions? Create yearly partitions for the next 10 years. Or 20 years. Or 100 years. They will be empty. Small space footprint. Ready to be used.
In this case there are relatively few (yearly) partitions - far less than having to deal with 1000's of daily partitions where it is often a better idea to automate adding of new partitions using a DBMS_JOB.