SAP vs ORACLE

want to pick up one of those, pls which do you think is most relevant in Nigeria at the moment

Oracle EnterpriseOne and SAP are two different things to Nigerian businesses.
One is more expensive, although both require some high end certifications for you to stake a claim in.

What is your objective, to get a job or to build solutions?

my company would be diving into enterprise solutions by next year but i would like to know which of the two we should build expertise on. so i would like to know which in you opinion have a greater market share in the country

ORACLE might be your best bet as many Nigerian companies would be more comfortable with it.
SAP is also good but not as well-known.
But then again it depends on the class and size of companies you are targeting.