Whether oral agreement is enforceable

Querist :
Anonymous
(Querist) 01 August 2011
This query is : Open
The question placed here is - Whether oral agreement made between two parties for tranfer of immovable property before 20 years can be enforced. One of the person who agreed to tranfer and complete the registration has died ,after receiving the full sale consideration leaving behind his 2 sons who refuse to complete the registration. The subject property is in possession of the other living person who is paying all the statutory dues and is enjoying the same. Original documents of the property had been handed over to him but pending registration.
The query is
1. What suit should be filed by the person with original docs & who is in possession of the subject property pending registration for completion of sale to enforce his right.
2. Whether oral agreement can be enforceable if so, with SC precedents
3.Can be compel the two sons to complete registration, both have not objected of the oppponent enjoying the said property till date for 20 years.
pls clarify the above issues