Meaning 'everything that exists' or 'all there is' — used to indicate the whole extent or everything available (e.g., 'all the strength one has').
彼はある限りの知識を総動員して問題を解いた。
He used all the knowledge he had to solve the problem.
ある限りの材料で料理を作るしかない。
We have no choice but to cook with whatever ingredients we have.
A set phrase meaning 'as long as there is' or 'so long as' — used to indicate that something holds true while a certain condition or state continues.
情報がある限り、私たちは最善を尽くすつもりだ。
As long as we have information, we will do our best.
ある限りの手段を講じても問題は簡単には解決しなかった。
Even after taking all possible measures, the problem was not easily solved.
彼がここにいる限り、危険はないだろう。
As long as he's here, there probably won't be any danger.