1)
What Chayim did he request, and Hashem gave it to him?
1.
Rashi: When I fled from Sha'ul to Chutz la'Aretz, I prayed "Es'halech Lifnei Hashem b'Artzos ha'Chayim" (116:9).
2.
Radak: Length of days in this world.
3.
Malbim: He asked that Sha'ul not kill him.
2)
What is "Orach Yamim Olam va'Ed"?
1.
Rashi: It is my kingship - You said "va'Hachinosi Kisei Malchuso Al Yisrael Ad Olam" (Divrei ha'Yamim I, 22:6).
2.
Radak: It is the world to come.
